Page 3 ___________________ 3VA molded case circuit breakers Introduction ___________________ Description ___________________ Applications ___________________ Accessories 3VA molded case circuit breakers ___________________ Service and maintenance ___________________ Technical specifications Manual ___________________ Appendix ___________________ ESD guidelines ___________________ List of abbreviations ___________________ Conversion tables 04/2015 A5E03603177010-02...
Page 4 Note the following: WARNING Siemens products may only be used for the applications described in the catalog and in the relevant technical documentation. If products and components from other manufacturers are used, these must be recommended or approved by Siemens. Proper transport, storage, installation, assembly, commissioning, operation and maintenance are required to ensure that the products operate safely and without any problems.
Page 5: Table Of Contents
Table of contents Introduction..........................11 About this documentation ....................11 Product-specific information....................11 1.2.1 Target readers ........................11 1.2.2 Technical Support ......................12 1.2.3 Reference documents ....................... 12 Description ..........................15 Overview - applications and portfolio ................. 15 2.1.1 Applications and possible uses ..................15 2.1.2 Portfolio ..........................
Page 6 Table of contents Protection system .......................69 2.6.1 Description of functions ......................70 2.6.2 Characteristic curves ......................72 2.6.3 Guide to setting the tripping characteristic ................74 2.6.4 Overload protection (L) .......................76 2.6.5 Short-time delayed short-circuit protection (S) ..............77 2.6.6 Instantaneous short-circuit protection (I) ................77 2.6.7 Ground-fault protection (G) ....................77 2.6.8...
Page 7 Table of contents Accessories ..........................141 Overview of accessories for 3VA molded case circuit breakers ........141 4.1.1 Accessories groups ......................141 4.1.2 Possible combinations of of accessories ................142 Internal accessories......................146 4.2.1 Mounting locations on 3VA molded case circuit breakers ..........146 4.2.2 Auxiliary and alarm switches....................
Page 8 Table of contents Motor operators ........................260 4.6.1 Motor operator MO320 .....................260 4.6.1.1 MANUAL, AUTO and LOCK modes ..................262 4.6.1.2 Opening, closing and resetting the 3VA molded case circuit breaker .........263 4.6.1.3 Faults, causes of faults and rectification of faults ..............267 4.6.2 Technical specifications ....................268 Locking and interlocking ....................269...
Page 9 Table of contents 4.13 Escutcheon ........................411 4.13.1 Product description ......................412 4.13.2 Labeling plate ........................414 4.14 DIN rail adapter ....................... 415 4.14.1 Introduction ........................415 4.14.2 Information about installation, assembly and attachment ..........416 Service and maintenance ......................419 Notes ..........................
Page 10 Table of contents Power losses ........................487 6.3.1 Power losses of 3VA1 molded case circuit breakers ............487 6.3.2 Power losses of 3VA2 molded case circuit breakers ............488 Derating and temperature compensation ................489 6.4.1 Derating of 3VA1 molded case circuit breakers ..............489 6.4.2 Temperature compensation with thermal-magnetic trip units of the TM 2-series ....491 6.4.3...
Page 11: Introduction
Introduction About this documentation 3VA molded case circuit breakers As part of our portfolio of cost-effective power distribution products, we are offering extremely flexible molded case circuit breakers designed to protect personnel and material assets. We can supply exactly the right molded case circuit breaker for every application. Benefits ●...
Page 12: Technical Support
ATSE - Modbus Communication Protocol (http://support.automation.siemens.com/ WW/view/de/40761679) Grundlagen der Niederspannungsschalt- — — technik (Fundamentals of Low-Voltage Switchgear and Controlgear), Siemens AG © 2008 Hartmut Kiank, Wolfgang Fruth: Pla- ISBN: A19100-L531-B115 — nungsleitfaden für Energieverteilungsan- lagen (Planning Guide for Power Distribution Plants), Publicis Publishing...
Page 13 Switching, Protection and Distribution in ISBN 3-89578-041-3 — Low-Voltage Networks, substantially extended and revised edition 1997 Siemens: Residual Current Protective E10003-E38-9T-B3011 — Devices, Low-Voltage Circuit Protection Technology Primer Siemens AG © 04 / 2009 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 14 Introduction 1.2 Product-specific information 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 15: Description
Description Overview - applications and portfolio This chapter provides an overview of all molded case circuit breakers in the 3VA portfolio and describes the potential areas of application for different circuit breaker models. The topics discussed in this chapter are listed below: ●...
Page 16 Description 2.1 Overview - applications and portfolio Possible uses 3VA molded case circuit breakers can be deployed in various fields where they perform a variety of different protection tasks. The following table (sorted according to breaking capacity) shows the areas in which 3VA molded case circuit breakers are used: Functions and applications 3VA molded case circuit breakers are used in a variety of functions, as shown in the table below:...
Page 17: Portfolio
The new 3VA1 molded case circuit breakers are available in 1 to 4-pole versions (3VA1 160 A) or in 3 and 4-pole versions (3VA1 100 A or 3VA1 250 A). The new 3VA2 molded case circuit breakers are available in 3 and 4-pole versions.
Page 18 Description 2.1 Overview - applications and portfolio 3VA1 molded case circuit breakers The new 3VA1 molded case circuit breakers reliably perform all the tasks associated with line protection. Features The key features of the 3VA1 series are: ● Compact design ●...
Page 19 Description 2.1 Overview - applications and portfolio 3VA2 molded case circuit breakers The new 3VA2 molded case circuit breakers reliably perform all the tasks associated with line and generator protection. This series is designed for applications with more exacting requirements: ●...
Page 20 Description 2.1 Overview - applications and portfolio Compact dimensions with function expansions In addition to its expanded functionality, the 3VA2 molded case circuit breaker also comes with compact dimensions for fixed mounting, as a plug-in version and a draw-out version. A cover size of 70 mm for the door cutout and a complete selection of breaking capacity classes from 55 kA to 150 kA at 415 V AC provide the necessary flexibility for planning.
Page 21 Description 2.1 Overview - applications and portfolio Energy management and communication The Electronic Trip Units (ETUs) provide the following energy management and communication functions: ● Metering functions ● Communication ● Flexible, local, digital inputs and outputs via the EFB300 external function box ●...
Page 22: Application Examples
Description 2.1 Overview - applications and portfolio 2.1.3 Application examples 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 23 Description 2.1 Overview - applications and portfolio 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 24: Detailed Information About Applications And Possible Uses
Description 2.1 Overview - applications and portfolio 2.1.4 Detailed information about applications and possible uses See also Applications (Page 105) 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 25: Technical Specifications
Description 2.1 Overview - applications and portfolio 2.1.5 Technical specifications O. r. On request A side plate must be installed (see chapter Insulating equipment (Page 191)) if the installation conditions on the right-hand side are such that the device is not finger-safe. 125 A, 160 A: I = 36 kA / 36 kA 3VA molded case circuit breakers...
Page 26 Description 2.1 Overview - applications and portfolio 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 27 Description 2.1 Overview - applications and portfolio O. r. On request 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 28: Molded Case Circuit Breakers And Accessories In The System
Description 2.1 Overview - applications and portfolio 2.1.6 Molded case circuit breakers and accessories in the system The new 3VA molded case circuit breakers come with a large portfolio of internal and external accessories which can be installed flexibly in any size of circuit breaker (depending on the type of accessory).
Page 29 Description 2.1 Overview - applications and portfolio 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 30 Description 2.1 Overview - applications and portfolio Overview of accessories in the system 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 31 Description 2.1 Overview - applications and portfolio 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 32: Ergonomic Design
Description 2.2 Ergonomic design Ergonomic design This chapter provides an overview of the ergonomic design features of the new 3VA molded case circuit breakers and explains what makes them so special. The topics discussed in this chapter are listed below: ●...
Page 33: The Right Circuit Breaker For Any Installation Conditions
Description 2.2 Ergonomic design 2.2.1 The right circuit breaker for any installation conditions The new series of molded case circuit breakers can be equipped with additional components so that they can be installed as fully functional switches in any location, a feature of the product which affords maximum flexibility to system planners.
Page 34 Description 2.2 Ergonomic design Optional installation variants 3VA molded case circuit breakers are available in the following installation variants: ① ● Fixed mounted ② ● Plug-in technology ③ ● Draw-out technology All variants offer the full range of functions, e.g. they can be equipped with every kind of accessory.
Page 35 Description 2.2 Ergonomic design Indication of switching positions in the draw-out unit The picture below illustrates the colors used to indicate the switching position in the draw-out unit: The switching position is indicated in a window of the draw-out unit and is clearly color- coded, enabling immediate identification of the current switching position of the molded case circuit breaker.
Page 36: Ergonomic Design Of Circuit Breakers, Handles And Control Elements
Description 2.2 Ergonomic design Motor operator for remote control 3VA molded case circuit breakers can also be controlled remotely. Whether the circuit breaker is controlled from "just" the other side of the closed cubicle door, or the breaker is switched on via a control room, operator panel, etc., is irrelevant. Motor operators are available as accessories for remote control of the circuit breakers.
Page 37 Description 2.2 Ergonomic design Clear status indication The possible switching positions of manual rotary operators are listed below: ● ON - red marking ● TRIP - yellow marking ● OFF - green marking The handle clearly engages in one of these positions depending on the status of the molded case circuit breaker.
Page 38 Description 2.2 Ergonomic design Color-coded control elements The control elements on the thermal-magnetic and electronic trip units are color-coded. The color of each control element indicates that it performs a specific function, helping you to make the required settings quickly. 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 39: Wide Range Of Accessories
Description 2.2 Ergonomic design 2.2.3 Wide range of accessories The internal accessories (e.g. alarm and auxiliary switches, auxiliary releases, etc.) all belong to one family and can be installed on any size of 3VA1 or 3VA2 circuit breaker. The accessories are designed for quick and easy installation. The components are coded by color and design to ensure that they are always installed at the correct position in the circuit breaker.
Page 40 Description 2.2 Ergonomic design The cylinder lock and communication accessories included with the internal accessories in the picture above are explained in chapters Locking and interlocking (Page 269) and Communication and link-up to other systems (Page 360). Fast assembly of motor operators The motor operators have been designed for quick and easy assembly and disassembly.
Page 41: Connection Technology
Description 2.2 Ergonomic design 2.2.4 Connection technology A large selection of connection systems is available for the new series of 3VA molded case circuit breakers. The supported cable cross-sections are based on the size of the molded case circuit breaker and the cable terminals used.
Page 42 Description 2.2 Ergonomic design Cables and busbars The new series of 3VA molded case circuit breakers are designed for connection to a variety of different cables and busbars: ● Different cable types, e.g. ① – Circular conductor ② – Sector-shaped conductor ③...
Page 43: Technical Details
Description 2.3 Technical details Technical details A summary of the technical features of 3VA molded case circuit breakers can be found in this chapter. The topics discussed in this chapter are listed below: ● Circuit breaker identification ● Operation ● Design and components – 3VA1 ●...
Page 44: Circuit Breaker Identification
Description 2.3 Technical details 2.3.1 Circuit breaker identification Each 3VA molded case circuit breaker can be clearly identified from various labels and plates attached to the unit. Circuit breaker labeling Each 3VA molded case circuit breaker has labels displaying all the important technical information, enabling unique identification: ①...
Page 45 This code can be scanned with a smartphone or a tablet PC. For the full range of QR code functions, use the "Industry Support" app supplied free of charge by Siemens. It allows you to directly view or download all relevant product information.
Page 46 Description 2.3 Technical details The key electrical data label on the molded case circuit breaker displays the following information: ① ③ IEC breaking capacity values at various volt- Insulation data ages ② ④ Frequency, utilization category Supported standards 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 47 Description 2.3 Technical details Connection information label The connection information label displays the following information: ① ③ Information about cable connections Article number for operating instructions ② ④ Code for production Article number 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 48 Description 2.3 Technical details Label insert The label insert can be found in the right-hand accessories compartment. When an accessory (e.g. motor operator or manual operator) is installed on the circuit breaker, this label can be attached to the accessory. The label insert displays the following information: ●...
Page 49 Description 2.3 Technical details Internal accessories label You can make a note of the number of installed accessories on the internal accessories label. This will enable you to ascertain which accessories are installed without removing the lid of the accessories compartment and to use the information, for example, to reorder components.
Page 50: Operation
Description 2.3 Technical details 2.3.2 Operation ① ③ ON: Main contacts closed OFF: Main contacts open ② ④ TRIP: Switching position following a trip PUSH TO TRIP: Initiates a mechanical trip The main contacts of the molded case circuit breakers are opened and closed by means of a handle mounted on the front of the unit.
Page 51: Design And Components - 3Va1
Description 2.3 Technical details 2.3.3 Design and components - 3VA1 The design of the 3VA1 molded case circuit breaker is illustrated in the diagram below: ① ④ Main connections Rotary contact system ② ⑤ Breaker mechanism with handle Arc plates ③...
Page 52: Design And Components - 3Va2
Description 2.3 Technical details 2.3.4 Design and components - 3VA2 The design of the 3VA2 molded case circuit breaker is illustrated in the diagram below: ① ⑤ Main connections Arc plates ② ⑥ Breaker mechanism with handle Maglatch ③ ⑦ Trip unit: ETU Current sensor ④...
Page 53: Current Limitation
Description 2.3 Technical details 2.3.5 Current limitation The term "current limitation" refers to the action of limiting the peak value of the prospective impulse short-circuit current i to a lower let-through current i The compact design of the breakers has been made possible by their excellent current limiting capabilities.
Page 54: Breaking Capacity
Description 2.3 Technical details Double-rotary contact system To achieve excellent current limiting, the 3VA molded case circuit breakers are equipped with a double-rotatory contact system that opens dynamically on its own above the specified disengaging currents on the principle of magnetic repulsion before the expected peak value of the short-circuit current is reached.
Page 55 Description 2.3 Technical details Switching capacity of the 3VA1 series O. r. On request 125 A, 160 A: I = 36 kA / 36 kA Switching capacity of the 3VA2 series 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 56: Selectivity
Description 2.4 Selectivity Selectivity Switching devices connected in series, e.g. molded case circuit breakers and fuses, work in a coordinated manner to ensure that switching devices are tripped successively. The closest, upstream switching device before the location of the short-circuit must trip. The other switching devices on the same current run do not trip.
Page 57 The electronic trip units then use a fast signal link to determine priorities in the tripping sequence. Zone Selective Interlocking (ZSI) has been developed by SIEMENS in order to prevent unacceptably long tripping times when several molded case circuit breakers are connected in series.
Page 58 Description 2.4 Selectivity Full selectivity There is an increasing demand for full selectivity in order to safeguard continuity of service by power distribution systems. A power system is said to be fully selective if only the protective device located upstream of the fault location when viewed in the direction of energy flow, i.e.
Page 59: Standards And Guidelines
You can find information on selectivity values for 3VA2 molded case circuit breakers on the Internet under the link for 3VA documentation (http:/www.siemens.com/3VA- Documentation). Electronic trip units and fast trip units As a protective device, the molded case circuit breaker is required to clear electrical faults in the system.
Page 60: Electromagnetic Compatibility
Derating (reduction in rated operational current) is required at temperatures above +50 °C. You will find more information on the applicable derating factors in chapter Derating and temperature compensation (Page 489). The permissible storage temperature in original Siemens packaging lies between -25 °C and +80 °C. Special climatic requirements 3VA molded case circuit breakers including their accessories can also be used in challenging operating environments.
Page 61 Description 2.5 Standards and guidelines Harsh conditions of storage, transportation and stationary use The molded case circuit breakers have been tested according to the relevant special test procedures defined in IEC / EN 60947-1, Appendix Q for Class E applications. This class covers the areas MC3 + CC2 + SC1: ●...
Page 62: Permissible Mounting Positions
Description 2.5 Standards and guidelines Installation altitudes When 3VA1 and 3VA2 molded case circuit breakers are used at up to 2000 m above sea level, the rated data will not change. An installation altitude above 2000 m can lead to higher temperatures at the switching devices.
Page 63 Description 2.5 Standards and guidelines Further mounting positions, and mounting positions with accessories The following table shows the possible variations on the mounting positions, as well as mounting positions with accessories: 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 64: Safety Clearances
Description 2.5 Standards and guidelines 2.5.6 Safety clearances During a short-circuit interruption, high temperatures, ionized gases and high pressures occur in and above the arcing chambers of the molded case circuit breaker. Safety clearances are required to: ● allow pressure distribution ●...
Page 65 Description 2.5 Standards and guidelines Minimum clearance for 3VA1 molded case circuit breakers: Can be used for connection methods: box terminal, screw-type terminal, internal circular conductor terminal, and rear terminals Can be used for connection methods: circular conductor terminal large, front connection bars extended, and front connection bars broadened Minimum clearance for 3VA2 molded case circuit breakers: Can be used for connection methods: box terminal, screw-type terminal, internal circular conductor terminal, and...
Page 66 Description 2.5 Standards and guidelines Note In addition to the clearances stated above, any insulating equipment that might be required must also be considered, see chapter Insulating equipment (Page 191). It must be ensured that the cable or busbar connection does not reduce the air insulation clearance.
Page 67 Description 2.5 Standards and guidelines Safety clearances between molded case circuit breakers No minimum clearance needs to be observed between the molded case circuit breakers on the longitudinal sides (see table above). The following safety clearances apply to molded case circuit breakers installed directly on top of each other: See tables below for minimum clearance ①...
Page 68: Degrees Of Protection
Description 2.5 Standards and guidelines 2.5.7 Degrees of protection 3VA molded case circuit breakers comply with the following degrees of protection as defined by IEC 60529 and IEC 60947-1, Appendix C: Degree of protection IP40 is achieved when a 3VA molded case circuit breaker is installed in a switchboard with a door cutout including release (see below).
Page 69: Protection System
Description 2.6 Protection system Protection system This chapter contains an overview of the protection system of 3VA molded case circuit breakers. The topics discussed in this chapter are listed below: ● Description of functions ● Overload protection (L) ● Short-time delayed short-circuit protection (S) ●...
Page 70: Description Of Functions
Description 2.6 Protection system 2.6.1 Description of functions The protection function performed by the molded case circuit breaker in the power distribution network is defined by the choice of trip unit. There are two different types of trip unit, i.e. thermal-magnetic (TMTU) and electronic (ETU): 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 71 Description 2.6 Protection system 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 72: Characteristic Curves
Description 2.6 Protection system 2.6.2 Characteristic curves To design a low-voltage switchboard in accordance with the valid rules, the system planner needs to dimension the protection settings of the molded case circuit breakers. The settings selected for the trip unit of a molded case circuit breaker depend on the type of equipment to be protected, e.g.
Page 73 Description 2.6 Protection system ① ⑥ Response threshold of the long-time delayed Delay of the short-time delayed protection protection, thermal ② ⑦ Response threshold of the long-time delayed Response threshold of the instantaneous protection protection ③ Delay of the long-time delayed protection Overload range ④...
Page 74: Guide To Setting The Tripping Characteristic
SIMARIS design The Siemens SIMARIS design software tool is a fast, simple and reliable tool for calculating and dimensioning networks in accordance with the valid rules: For further information about SIMARIS design, please visit: (http://www.siemens.com/simaris)
Page 75 Description 2.6 Protection system Basic rules for setting different trip parameters Setting the parameters for trip units ETU 5-series and 8-series ETU 5-series and 8-series are equipped with an LCD. Parameter settings can be adjusted via this LCD, values are input by means of buttons. The powerconfig software can also be used to input parameter settings.
Page 76: Overload Protection (L)
Description 2.6 Protection system 2.6.4 Overload protection (L) The ID letter for overload protection is L (stands for "Long-time delay"). The trip unit is inverse-time delayed and exhibits the following characteristics depending on the trip unit type: ● Bimetal characteristic with thermal-magnetic trip units ●...
Page 77: Short-Time Delayed Short-Circuit Protection (S)
Description 2.6 Protection system 2.6.5 Short-time delayed short-circuit protection (S) The ID letter for short-time delayed short-circuit protection is "S" (stands for "Short-time delay"). The S function of the trip unit can be used to implement time-selective short-circuit tripping in low-voltage networks in which multiple molded case circuit breakers are installed in series.
Page 78: Neutral Conductor Protection (N)
Description 2.6 Protection system 2.6.8 Neutral conductor protection (N) The ID letter for neutral conductor protection is "N". The neutral conductor protection system protects the neutral conductor against overloads and short circuits. The letters I refer to the current setting value; the associated setting time is identical to t Note A neutral conductor with full cross sectional area (distributed neutral conductor of the same size as the phases) is normally protected by the phase protection system and does not...
Page 79 Description 2.6 Protection system Neutral conductor protection At rated operational currents I ≤ 63 A: I = 40 % … 100 % I Applies to I > 63 A Dependent on circuit breaker size and rated operational current Parameters of the neutral conductor protection function ●...
Page 80 Description 2.6 Protection system Example of a neutral conductor protection characteristic ① Response threshold of the neutral conductor protection ② Response threshold of the long-time delayed protection Adjustment of neutral conductor protection settings The tripping current I can be adjusted: ●...
Page 81: Zone-Selective Interlocking Zsi
50 ms. Note Downward compatibility The ZSI function of 3VA molded case circuit breakers is compatible with the ZSI functions of Siemens 3VL molded case circuit breakers and 3WL air circuit breakers. 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 82 Description 2.6 Protection system Operating principle The diagram below demonstrates the operating principle of zone-selective interlocking: - - - Communication cable "Virtual" tripping time of I protection Output, transmits the blocking signal Delay time setting of S protection Input, receives the blocking signal Delay time of all molded case circuit breakers which detect the short circuit but do not receive a blocking signal when ZSI is activated...
Page 83 Description 2.6 Protection system Fault 1 If the short-circuit current is sufficiently large, the trip units of molded case circuit breakers Q41, Q33, Q22 and Q11 are activated. Since Q41 clears the fault within t = 10 ms, none of the other molded case circuit breakers trips even though Q41 has no ZSI and cannot therefore transmit a blocking signal to Q33.
Page 84: Thermal-Magnetic Trip Unit
Description 2.7 Thermal-magnetic trip unit Thermal-magnetic trip unit A thermal-magnetic trip unit consists of a thermal trip unit for protecting against overload, and a magnetic trip unit for protecting against short circuits. Both trip units are series- connected. 2.7.1 Thermal trip unit (L) The thermal trip unit consists of a temperature-dependent bimetal that heats up as a result of the flow of current.
Page 85: Application Cases And Trip Unit Types
Description 2.7 Thermal-magnetic trip unit 2.7.3 Application cases and trip unit types The table below illustrates the applications for which different types of thermal-magnetic trip units can be used: For 4-pole molded case circuit breakers only, available without protection, 50% (≥ I 100 A) and 100% 3VA molded case circuit breakers...
Page 86: Electronic Trip Unit
Description 2.8 Electronic trip unit Electronic trip unit An electronic trip unit is based on the following concepts: ● Complete measurement of the current in the phases L1, L2 and L3, with N and currents to ground optional ● Rogowski coil –...
Page 87: Connections
Description 2.8 Electronic trip unit 2.8.1 Connections The connections on the ETU are illustrated in the diagram below: ① Interface for an external current transformer for N conductor ② Interface for connection of an EFB300 external function box ③ Interface for connection of an RCD820 residual current device ④...
Page 88: Protection Functions
Description 2.8 Electronic trip unit 2.8.2 Protection functions Available in a version with external current transformer for N conductor or 4-pole breaker 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 89 Description 2.8 Electronic trip unit Available in a version with external current transformer for N conductor or 4-pole breaker 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 90: Operator Controls
Description 2.8 Electronic trip unit 2.8.3 Operator controls The following figure shows the available ETU types of the 3VA2 molded case circuit breakers. You can decide which ETU to install according to the area of application. ① ③ ⑤ Name of the ETU Front interface Pushbuttons ②...
Page 91 Description 2.8 Electronic trip unit LED displays The following table explains what the LED displays mean: 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 92 Description 2.8 Electronic trip unit ETU 3-series units 3-series electronic trip units are equipped with setting buttons. A description of the operating principle of the setting buttons and operating instructions can be found in chapter Guide to setting the tripping characteristic (Page 74). Displays on ETU 5-series and 8-series units 5-series and 8-series electronic trip units have an LCD display.
Page 93 Description 2.8 Electronic trip unit The following table explains what functions are performed by the buttons next to the display: Displays on ETU 5-series and 8-series units The basic structure comprises the following displays: ● Standard display ● Alarm display ●...
Page 94 Description 2.8 Electronic trip unit 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 95 Description 2.8 Electronic trip unit Standard display Alarm display Active alarms are displayed consecutively in screens AV1 … AV5. If no alarms are active, these screens are concealed. 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 96 Description 2.8 Electronic trip unit Measured value display The table below explains the measured value display: 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 97 Description 2.8 Electronic trip unit Parameter display The table below explains the parameter display: 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 98 Description 2.8 Electronic trip unit Setting and changing parameters 1. Use the arrow keys to navigate to the correct display. 2. Press the <OK> button. → Edit mode is active. Activation is confirmed by display of "pencil" symbol. 3. Use the arrow keys to adjust the parameter setting. 4.
Page 99 Description 2.8 Electronic trip unit Diagnostics display When a TD500 test device is connected, you can use it to initiate a test. The following screen appears when a TD500 is connected. The bar flashes at a frequency of 0.5 Hz. The bar travels from left to right while testing is in progress.
Page 100: Load Acceptance And Load Shedding - Load Management
Description 2.8 Electronic trip unit 2.8.4 Load acceptance and load shedding - load management 3VA molded case circuit breakers equipped with an ETU 3-series or higher series provide two current thresholds for the purpose of implementing a local load management function. Load shedding is the upper threshold, and load acceptance the lower threshold.
Page 101: Measuring With A Rogowski Coil
Description 2.8 Electronic trip unit 2.8.5 Measuring with a Rogowski coil The Rogowski coil is a toroidal coil without a ferromagnetic core. It is used as a component in electronic measuring devices to measure alternating current. Advantages of the current sensor: ●...
Page 102 Description 2.8 Electronic trip unit The following table provides an overview of the setting values: Depending on ETU version Value can be read Value can be edited 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 103 Description 2.8 Electronic trip unit Depending on ETU version Value can be displayed/read 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 104 Description 2.8 Electronic trip unit Depending on ETU version Value can be displayed/read 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 105: Applications
Applications Line protection applications of 3VA molded case circuit breakers The main applications of the circuit breakers as line protection components are: ● In main switchboards to provide protection for cables to subdistribution boards ● In subdistribution boards to provide protection for cables to small distribution boards ●...
Page 106: Variants
Applications 3.1 Line protection applications of 3VA molded case circuit breakers Suitable 3VA molded case circuit breakers and trip units 3VA molded case circuit breakers equipped with the following trip units are suitable for use in line protection applications: ● 3VA1 breakers with thermal-magnetic trip units –...
Page 107 Applications 3.1 Line protection applications of 3VA molded case circuit breakers Thermal-magnetic trip unit TM210 LI Line protection FTFM - function LI The thermal-magnetic trip unit TM210 has: ● fixed parameter setting I for overload protection (L) ● fixed parameter setting I for instantaneous short-circuit protection (I) ●...
Page 108 Applications 3.1 Line protection applications of 3VA molded case circuit breakers Thermal-magnetic trip unit TM220 LI Line protection ATFM - function LI The thermal-magnetic trip unit TM220 has: ● adjustable parameter setting I for overload protection (L) ● fixed parameter setting I for instantaneous short-circuit protection (I) ●...
Page 109 Applications 3.1 Line protection applications of 3VA molded case circuit breakers Thermal-magnetic trip unit TM240 LI Line protection ATAM - function LI The thermal-magnetic trip unit TM240 has: ● adjustable parameter setting I for overload protection (L) ● adjustable parameter setting I for instantaneous short-circuit protection (I) ●...
Page 110: Electronic Trip Units
Applications 3.1 Line protection applications of 3VA molded case circuit breakers 3.1.1.2 Electronic trip units ETUs for line protection applications The following electronic trip units are suitable for use in line protection applications: ● ETU320 LI ● ETU330 LIG ● ETU350 LSI ●...
Page 111 Applications 3.1 Line protection applications of 3VA molded case circuit breakers ETU320 parameters: With 4-pole versions only: Overload protection L: adjustable in 10 steps of 0.4 to 1.0 x I • adjustable in 10 steps of 0.5 to 12 /15 s or 17 s •...
Page 112 Applications 3.1 Line protection applications of 3VA molded case circuit breakers Electronic trip unit ETU330 LIG ETU330 LIG 3-pole: ETU330 LIG 4-pole: Line protection - function LIG The electronic trip unit ETU330 has: ● adjustable parameter settings I and t for overload protection (L) ●...
Page 113 Applications 3.1 Line protection applications of 3VA molded case circuit breakers ETU330 parameters: With 4-pole versions only: Overload protection L: adjustable in 10 steps of 0.4 to 1.0 x I • adjustable in 10 steps of 0.5 to 12 /15 s or 17 s •...
Page 114 Applications 3.1 Line protection applications of 3VA molded case circuit breakers Electronic trip unit ETU350 LSI ETU350 LSI 3-pole: ETU350 LSI 4-pole: Line protection - function LSI The electronic trip unit ETU350 has: ● adjustable parameter settings I and t for overload protection (L) ●...
Page 115 Applications 3.1 Line protection applications of 3VA molded case circuit breakers ETU350 parameters: With 4-pole versions only: Overload protection L: adjustable in 10 steps of 0.4 to 1.0 x I • adjustable in 10 steps of 0.5 to 12 /15 s or 17 s •...
Page 116 Applications 3.1 Line protection applications of 3VA molded case circuit breakers 5-series and 8-series electronic trip units Parameter input via display unit With 5-series and 8-series electronic trip units, it is possible to set more parameters and scale the selection of parameters more finely than for 3-series trip units. Parameters are set via the display unit and its buttons.
Page 117 Applications 3.1 Line protection applications of 3VA molded case circuit breakers Electronic trip units ETU550 LSI and ETU850 LSI ETU550 LSI 3-pole and 4-pole units: ETU850 LSI 3-pole and 4-pole units: Line protection - function LSI The electronic trip units ETU550 and ETU850 have: ●...
Page 118 Applications 3.1 Line protection applications of 3VA molded case circuit breakers ETU550 / ETU850 parameters (3-pole version): only 3-pole version with external current transformer for N conductor ETU550 / ETU850 parameters (4-pole version): 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 119 Applications 3.1 Line protection applications of 3VA molded case circuit breakers Overload protection L: adjustable from 0.4 to 1.0 x I in absolute current values • < 50 A: In steps of 0.5 A ≥ 50 A: In steps of 1 A adjustable from 0.5 to 12 / 15 / 17 / 20 / 25 s (depending on rated operational •...
Page 120 Applications 3.1 Line protection applications of 3VA molded case circuit breakers Electronic trip units ETU560 LSIG and ETU860 LSIG ETU560 LSIG 3-pole and 4-pole units: ETU860 LSIG 3-pole and 4-pole units: Line protection - function LSIG The electronic trip units ETU560 and ETU860 have: ●...
Page 121 Applications 3.1 Line protection applications of 3VA molded case circuit breakers ETU560 / ETU860 parameters (3-pole version): only 3-pole version with external current transformer for N conductor ETU560 / ETU860 parameters (4-pole version): 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 122 Applications 3.1 Line protection applications of 3VA molded case circuit breakers Overload protection L: adjustable from 0.4 to 1.0 x I in absolute current values • < 50 A: In steps of 0.5 A ≥ 50 A: In steps of 1 A adjustable from 0.5 to 12 / 15 / 17 / 20 / 25 s (depending on rated operational •...
Page 123 Applications 3.1 Line protection applications of 3VA molded case circuit breakers Neutral conductor protection N: The neutral conductor protection function is available only for 3-pole molded case circuit breakers with external current transformer for N conductor for 4-pole molded case circuit breakers.
Page 124: Overview Of 3Va Molded Case Circuit Breakers In Line Protection Applications
Applications 3.1 Line protection applications of 3VA molded case circuit breakers 3.1.2 Overview of 3VA molded case circuit breakers in line protection applications O. r. On request 125 A, 160 A: I = 36 kA / 36 kA For the rated ultimate short-circuit breaking capacity and rated service short-circuit breaking capacity with direct current, see chapter DC network applications of the 3VA molded case circuit breaker (Page 132) .
Page 125 Applications 3.1 Line protection applications of 3VA molded case circuit breakers O. r. On request 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 126: Use Of The 3Va1 Breaker As A Switch Disconnector
Applications 3.2 Use of the 3VA1 breaker as a switch disconnector Use of the 3VA1 breaker as a switch disconnector Switch disconnectors are deployed as: ● Disconnectors in subdistribution and final distribution boards ● Bus couplers ● Disconnectors for machine line-ups, e.g. as maintenance or repair breakers ●...
Page 127 Applications 3.2 Use of the 3VA1 breaker as a switch disconnector Isolating features A switch disconnector isolates individual circuits or items of equipment so that maintenance or repair work can be carried out. This is a health and safety requirement. In compliance with IEC 60947-3, the symbol below is clearly displayed on the front panel of switch disconnectors: In accordance with the requirements of the standard regarding isolating function, the 3VA1...
Page 128 Applications 3.2 Use of the 3VA1 breaker as a switch disconnector Utilization categories for switch disconnectors Utilization categories are differentiated according to the following criteria: ● The relationship between operational current and rated operational current ● The relationship between operational voltage and rated operational voltage ●...
Page 129 Applications 3.2 Use of the 3VA1 breaker as a switch disconnector Making current Breaking current Rated operational current Applied voltage Rated operational voltage Recovery voltage 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 130: Overview Of 3Va1 As Switch Disconnectors
Applications 3.2 Use of the 3VA1 breaker as a switch disconnector 3.2.1 Overview of 3VA1 as switch disconnectors 3.2.2 Upstream protection of switch disconnectors Switch disconnectors are not equipped with an integral overload or short-circuit release. For this reason, a molded case circuit breaker or a fuse must be installed upstream of every switch disconnector.
Page 131 Protection of 3VA1 switch disconnectors at 50 / 60 Hz by a 3VA1 molded case circuit breaker More combinations can be found on the Internet (http://www.siemens.com/3VA- Documentation). Combinations with other protective devices can be configured at any time by means of...
Page 132: Dc Network Applications Of The 3Va Molded Case Circuit Breaker
Applications 3.3 DC network applications of the 3VA molded case circuit breaker DC network applications of the 3VA molded case circuit breaker 3.3.1 Introduction The main applications for 3VA circuit breakers in DC installations or networks are: ● Public transport systems, e.g. electric cars, underground rail networks and streetcars ●...
Page 133: Variants
Applications 3.3 DC network applications of the 3VA molded case circuit breaker Features specific to direct current Short-circuits are interrupted in DC networks by a method similar to the one applied to high alternating currents, i.e. by current limiting. A high arc voltage develops in molded case circuit breakers, which forces a current zero when the arc voltage exceeds the value of the recovery voltage.
Page 134: Breaking Capacity With Direct Current
Applications 3.3 DC network applications of the 3VA molded case circuit breaker 3.3.3 Breaking capacity with direct current O. r. On request 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 135: Recommended Circuit Configurations For Dc Systems
Applications 3.3 DC network applications of the 3VA molded case circuit breaker 3.3.4 Recommended circuit configurations for DC systems Ground-fault monitoring Ue > 250 V DC: DC insulating plate is mandatory for sizes 3VA10 and 3VA11 with a non-insulated mounting plate (see chapter Insulating equipment (Page 191)) Note DC 2-pole (all-pole disconnection), grounded system...
Page 136: 400 Hz Network Applications Of 3Va Molded Case Circuit Breakers
Applications 3.4 400 Hz network applications of 3VA molded case circuit breakers Note DC 2-pole (all-pole disconnection), non-grounded system If there is no possibility of a double ground fault occurring, or if any ground fault that does occur is dealt with immediately (ground-fault monitoring), 500 V will be the maximum permissible direct voltage.
Page 137 Applications 3.4 400 Hz network applications of 3VA molded case circuit breakers Features specific to 400 Hz supplies The thermal overload release of the 3VA1 molded case circuit breaker comprises a bimetal through which current flows, causing temperature rise. With currents at 400 Hz frequency, the temperature rise in the bimetal is higher than at 50 Hz.
Page 138: It System Applications Of 3Va Molded Case Circuit Breakers
Siemens 3VA molded case circuit breakers for line protection, whether they are equipped with a thermal- magnetic trip unit or an electronic trip unit, are suitable for use in IT systems.
Page 139: Fault Situation
Applications 3.5 IT system applications of 3VA molded case circuit breakers 3.5.2 Fault situation The most critical fault for molded case circuit breakers in ungrounded IT systems is a double-phase-to-ground fault on the infeed and load ends of the molded case circuit breaker. If this fault occurs, the entire phase-to-phase voltage is applied across one pole of the molded case circuit breaker.
Page 140 Applications 3.5 IT system applications of 3VA molded case circuit breakers 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 141: Accessories
Accessories Overview of accessories for 3VA molded case circuit breakers 4.1.1 Accessories groups A comprehensive range of accessories is available to help you adapt 3VA molded case circuit breakers to the requirements of the specific application. The table below indicates which accessories are compatible with particular 3VA molded case circuit breakers, and which sizes of breakers are compatible with the same accessory: 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 142: Possible Combinations Of Of Accessories
Accessories 4.1 Overview of accessories for 3VA molded case circuit breakers 4.1.2 Possible combinations of of accessories The tables below indicate the combinability of different accessories. The boxes to the right of the grey diagonal line indicate whether or not accessories can be combined. Examples: Circular conductor terminal, 2 cables, and insulating plate broadened (green lines in table below):...
Page 143 Accessories 4.1 Overview of accessories for 3VA molded case circuit breakers only 4-pole 3VA molded case circuit breakers 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 144 Accessories 4.1 Overview of accessories for 3VA molded case circuit breakers 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 145 Accessories 4.1 Overview of accessories for 3VA molded case circuit breakers 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 146: Internal Accessories
Accessories 4.2 Internal accessories Internal accessories 4.2.1 Mounting locations on 3VA molded case circuit breakers The portfolio of internal accessories includes: ● Auxiliary switches ● Alarm switches ● Auxiliary releases ● COM060 communication module ● 24 V module ● Cylinder lock (type Ronis) The following tables show the alternative mounting locations for internal accessories, which depend on the size and pole number of the circuit breaker.
Page 147 Accessories 4.2 Internal accessories 3VA1 molded case circuit breakers: 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 148 Accessories 4.2 Internal accessories 3VA2 molded case circuit breakers: 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 149 Accessories 4.2 Internal accessories 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 150: Auxiliary And Alarm Switches
Accessories 4.2 Internal accessories 4.2.2 Auxiliary and alarm switches The auxiliary and alarm switches for 3VA molded case circuit breakers belong to an integrated range of accessories. They can be installed in all sizes of all breakers up to 630 A. The auxiliary and alarm switches can be very simply snapped into place and connected up in accessories compartments provided on the front panel of the unit to the left and right of the handle.
Page 151 Accessories 4.2 Internal accessories The diagram below uses the example of an ET200S to illustrate the conventional method of connecting the electronics-compatible auxiliary switch AUX, the trip alarm switch TAS and the motor operator MO320 to a distributed I/O unit. Further information about contact reliability can be found at the end of this chapter.
Page 152 Accessories 4.2 Internal accessories Electrical alarm switches EAS Electrical alarm switches are operated as soon as the main contacts of the molded case circuit breaker open in the event that the breaker is tripped by the ETU. They indicate the following conditions: ●...
Page 153 Accessories 4.2 Internal accessories Short circuit alarm switches SAS Short circuit alarm switches signal trips only if they have been initiated by a short circuit. These events are also indicated on the molded case circuit breaker. The trip must be reset by deliberate acknowledgement of the fault before the molded case circuit breaker is switched to ON again.
Page 154: Contact Sequence Diagrams
Accessories 4.2 Internal accessories 4.2.3 Contact sequence diagrams Main contacts open Auxiliary contacts open Contacts closed 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 155 Accessories 4.2 Internal accessories Main contacts open Auxiliary contacts open Contacts closed Manual reset by tool necessary after tripping Automatic reset by motor operator MO320 Following a trip, the main contacts are open, but the contacts of the UVR (LNO) are still closed. The switches must be moved to the OFF switching position in order to disconnect the control circuit in all poles.
Page 156: Technical Specifications Of Auxiliary And Alarm Switches
Accessories 4.2 Internal accessories 4.2.4 Technical specifications of auxiliary and alarm switches HP switches lined up side by side up to 440 V HP switches without adjacent switches; not in mounting locations 11 and 21 up to 690 V 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 157 Accessories 4.2 Internal accessories In combination with manual switching operations, but not when motor operators are used 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 158: Auxiliary Releases
Accessories 4.2 Internal accessories 4.2.5 Auxiliary releases Auxiliary releases allow remote electrical tripping of the circuit breaker. They can be used to monitor control or main circuits in order to implement a protective system against accidental restart following a power failure, for example. Auxiliary releases therefore perform a main circuit monitoring function in addition to the main circuit monitoring performed by the trip unit.
Page 159 Accessories 4.2 Internal accessories Shunt trips left STL Shunt trips of type STL can be fitted in the left-hand accessories compartment as an alternative to an undervoltage release. The units are available with five rated voltages in the following range: ●...
Page 160 Accessories 4.2 Internal accessories Undervoltage releases with leading NO contacts UVR (LNO) The UVR release is protected against open circuits when combined with an EMERGENCY STOP pushbutton. The two installed NO (auxiliary) contacts allow the control circuits to be isolated after the breaker has tripped. The undervoltage release with leading NO contacts UVR (LNO) is therefore an ideal component for installation in the EMERGENCY STOP circuit of a 3VA molded case circuit breaker or switch disconnector as the main switch for a machine or installation.
Page 161 Accessories 4.2 Internal accessories Universal releases UNI A universal release is a single, 21 mm wide component in which a shunt trip and an undervoltage release are combined. These are subject to the same tripping conditions as the individual devices. A single component with minimal footprint can therefore perform both functions.
Page 162 Accessories 4.2 Internal accessories Technical specifications of shunt trips and releases 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 163 Accessories 4.2 Internal accessories 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 164: Time-Delay Devices For Undervoltage Releases
Accessories 4.2 Internal accessories 4.2.6 Time-delay devices for undervoltage releases Undervoltage releases can also be equipped with external, electronic time-delay control devices which prevent unintentional tripping in response to brief voltage dips during periods of disrupted operation. Time-delay device for UVR with fixed delay setting The simple time-delay device with fixed delay setting is available for the following voltages: ●...
Page 165: Connection System
Accessories 4.3 Connection system Connection system The chapter "Connection technology" contains useful information and provides a summarized description of the 3VA connection system. It provides a helpful guide to connecting cables or busbars to a molded case circuit breaker and so helps to ensure the safety of personnel and material assets.
Page 166 Accessories 4.3 Connection system Cable classes as defined by IEC 60228: ① Class 1 - cable with solid conductor ② Class 2 - cable with stranded conductors ③ Class 5 - cable with finely stranded conductors ④ Class 6 - cable with a large number of extra finely stranded conductors The conductors in class 1 and 2 cables are inflexible conductors, either solid or stranded.
Page 167 Accessories 4.3 Connection system Solid and stranded sector-shaped conductors are also used. Cable lugs and wire-end ferrules Cables are connected by means of lugs and wire-end ferrules to the molded case circuit breaker in order to provide stable, safe connections. These elements help to make solid connections at the breaker.
Page 168 Accessories 4.3 Connection system Cables and busbars: Busbars In addition to cables, the busbar is also widely used in electrical connections, especially in cubicles. Some of the reasons for using busbars include: ● High-curvature bending radii which are unsuitable for cables of large cross section ●...
Page 169: Portfolio Of Connection Components For 3Va Molded Case Circuit Breakers
Accessories 4.3 Connection system 4.3.2 Portfolio of connection components for 3VA molded case circuit breakers 4.3.2.1 General overview 3VA molded case circuit breakers employ connection technology which is designed to support uncomplicated and convenient commissioning of the breakers in such a way that all installation requirements are fulfilled.
Page 170 Accessories 4.3 Connection system Furthermore, the connection accessories (see chapter Further connection accessories (Page 191)) can be optionally installed to insulate the termination area of the 3VA molded case circuit breaker and so provide protection against accidental contact. An auxiliary conductor terminal can be implemented quickly using accessory components which are available by special order.
Page 171 Accessories 4.3 Connection system A box terminal can be installed at the lug terminal to allow a cable to be connected directly. 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 172 Accessories 4.3 Connection system The entire portfolio of connection systems for 3VA molded case circuit breakers can be deployed in unmodified form for the following applications: ● On all fixed-mounted versions of molded case circuit breaker ● On all molded case circuit breakers equipped with plug-in technology ●...
Page 173: Front Cable Connection
Accessories 4.3 Connection system 4.3.2.2 Front cable connection The diagram below illustrates all the components available for implementing a direct cable connection at the molded case circuit breaker. The only exception is the box terminal as this can be used to connect busbars as well as cables. Connection technology Cables and busbars ①...
Page 174 Accessories 4.3 Connection system Box terminal The box terminal as a factory-assembled connection can be optionally selected as an alternative to the lug terminal (see chapter Front busbar and cable lug connections (Page 181)) for all 3VA molded case circuit breakers up to size 160A. The 3VA breaker is then shipped with preassembled box terminals.
Page 175 Accessories 4.3 Connection system 3VA2 molded case circuit breakers Box terminals can be ordered ● as a pack of 3 ● as a pack of 4 Circular conductor terminal with and without auxiliary conductor terminal The circular conductor terminal is available under separate article numbers depending on whether it is ordered with or without an auxiliary conductor terminal.
Page 176 Accessories 4.3 Connection system 3VA1 molded case circuit breakers: 3VA2 molded case circuit breakers: Circular conductor terminals with or without auxiliary conductor terminal can be ordered ● as a pack of 3 ● as a pack of 4 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 177 Accessories 4.3 Connection system Circular conductor terminal, large, with and without auxiliary conductor terminal The circular conductor terminal, large, is available under separate article numbers depending on whether it is ordered with or without an auxiliary conductor terminal. With the exception of the bore for the auxiliary conductor terminal, both circular conductor terminals are technically identical, i.e.
Page 178 Accessories 4.3 Connection system Circular conductor terminal, 2 cables, with and without auxiliary conductor terminal The circular conductor terminal, 2 cables, is available under separate article numbers depending on whether it is ordered with or without an auxiliary conductor terminal. With the exception of the bore for the auxiliary conductor terminal, both circular conductor terminals are technically identical, i.e.
Page 179 Accessories 4.3 Connection system Circular conductor terminals 2 cables with or without auxiliary conductor terminal can be ordered ● as a pack of 3 ● as a pack of 4 Circular conductor terminal, 6 cables The circular conductor terminal, 6 cables is an external terminal, i.e. it projects beyond the external contour of the breaker's termination area.
Page 180 Accessories 4.3 Connection system 3VA2 molded case circuit breakers: Circular conductor terminals, 6 cables can be ordered ● as a pack of 3 ● as a pack of 4 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 181: Front Busbar And Cable Lug Connections
Accessories 4.3 Connection system 4.3.2.3 Front busbar and cable lug connections The diagram below illustrates all the components available for implementing a busbar or cable lug connection on the front panel of the 3VA molded case circuit breaker. Connection technology Cables and busbars ①...
Page 182 Accessories 4.3 Connection system Lug terminal With a lug terminal connection, it is possible to connect busbars and cable lugs directly to the jumper lug of the 3VA molded case circuit breaker. A special terminal can be installed to provide an auxiliary conductor connection. For further information, please refer to chapter Auxiliary conductor terminal (Page 199).
Page 183 Accessories 4.3 Connection system Front connection bars extended Front connection bars extended can be installed to connect larger busbars and cable lugs outside the termination area of a 3VA molded case circuit breaker. The front connection bars therefore extend the jumper lug of the breaker. All front connection bars extended are supplied as standard with phase barriers to provide insulation between individual phases (see chapter Insulating equipment (Page 191)).
Page 184 Accessories 4.3 Connection system Front connection bars broadened Front connection bars broadened can be installed to connect very large busbars and cable lugs outside the termination area of a 3VA molded case circuit breaker. Front connection bars broadened increase the distance between pole centers of the jumper lugs of the molded case circuit breaker.
Page 185 Accessories 4.3 Connection system Front connection bars edgewise Front connection bars edgewise can be installed to connect large busbars and cable lugs outside the termination area of a 3VA molded case circuit breaker. The jumper lug of the breaker is turned by 90° when front connection bars edgewise are fitted. All front connection bars edgewise are supplied as standard with phase barriers to provide insulation between individual phases (see chapter Insulating equipment (Page 191)).
Page 186: Rear Busbar And Cable Lug Connections
Accessories 4.3 Connection system 4.3.2.4 Rear busbar and cable lug connections The diagram below illustrates all the components available for implementing a busbar or cable lug connection on the rear panel of the 3VA molded case circuit breaker. Connection technology Cables and busbars ①...
Page 187 Accessories 4.3 Connection system Lug terminal, right-angled The right-angled lug terminal can be installed to connect busbars and cable lugs outside the termination area on the rear panel of a 3VA molded case circuit breaker. The jumper lug of the breaker is turned by 90° at right angles, allowing the busbar or cable lug to be connected at the rear.
Page 188 Accessories 4.3 Connection system The table below provides an overview of the minimum and maximum sizes of cables and busbars which can be connected by means of the right-angled lug terminal. Right-angled lug terminals can be ordered ● as a pack of 3 ●...
Page 189 Accessories 4.3 Connection system Rear connecting studs The rear connecting studs can be installed to connect busbars and cable lugs to the rear panel of a 3VA molded case circuit breaker. The dimensions of rear connecting studs are given in the table below: Rear connecting studs can be ordered ●...
Page 190 Accessories 4.3 Connection system Rear terminal flat The rear terminal flat can be installed to connect busbars and cable lugs to the rear panel of a 3VA molded case circuit breaker. The rear terminal flat can be rotated in steps of 45°, i.e. it can be installed an an angle of 0°, 45°...
Page 191: Further Connection Accessories
Accessories 4.3 Connection system 4.3.3 Further connection accessories 4.3.3.1 Insulating equipment The portfolio of connection accessories includes a broad range of insulating equipment. The diagram below provides an overview of insulation accessories available for 3VA molded case circuit breakers. ① Terminal cover ②...
Page 192 Accessories 4.3 Connection system Phase barriers Phase barriers provide insulation between the individual phases of the molded case circuit breaker. They are simply snapped into place on the 3VA molded case circuit breaker. Phase barriers can be used in combination with the insulating plate and the broadened insulating plate.
Page 193 Accessories 4.3 Connection system Terminal cover, extended terminal cover and broadened terminal cover All terminal covers afford degree of protection IP40 at the front of the breaker and degree of protection IP20 at the infeed and load ends provided that they are correctly installed (cutting of grille structure).
Page 194 Accessories 4.3 Connection system Terminal cover The terminal cover is compatible with: ● Box terminals ● Circular conductor terminals ● Lug terminals The terminal cover is simply snapped into place on 3VA1 breakers, or is snapped into place and secured with 2 screws on 3VA2 breakers. Extended terminal cover The extended terminal cover always consists of two parts: ①...
Page 195 Accessories 4.3 Connection system Broadened terminal cover The broadened terminal cover always consists of two parts: ① Rear insulating plate, provides insulation from the cubicle mounting plate ② Front half, pushed over the molded case circuit breaker from the front The insulating plate is fitted to the rear panel of the molded case circuit breaker and then secured by 2 screws to the front half of the terminal cover.
Page 196 Accessories 4.3 Connection system Side plate for 3VA1 2-pole CAUTION Risk of injury A side plate must be fitted if the side surface at the handle end of a 2-pole 3VA1 breaker with current rating I > 100 A is freely accessible. For further information, please refer to Operating Instructions 3ZW1012-0VA10-2AA0.
Page 197 Accessories 4.3 Connection system Insulating equipment 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 198 Accessories 4.3 Connection system Touch protection Insulated cables and busbars With insulated cables and busbars that have insulation that reaches inside the terminal compartment of the 3VA molded case circuit breaker, the unit is classed as finger-safe (IP2X) if it is also equipped with a terminal cover. This protection is guaranteed only if the unit is installed and wired correctly.
Page 199: Auxiliary Conductor Terminal
Accessories 4.3 Connection system 4.3.3.2 Auxiliary conductor terminal An auxiliary conductor terminal can be implemented easily using components from the 3VA molded case circuit breaker equipment portfolio. Note All auxiliary conductor terminals implemented on 3VA molded case circuit breakers have a maximum permissible current-carrying capacity of 6 A.
Page 200 Accessories 4.3 Connection system Auxiliary conductor terminal for busbar connection This auxiliary conductor terminal is installed at the 3VA molded case circuit breaker with the busbar. It can also be installed using: ● Front connection bars extended ● Front connection bars broadened ●...
Page 201: Plug-In And Draw-Out Technology
Accessories 4.4 Plug-in and draw-out technology Plug-in and draw-out technology 4.4.1 Introduction With most applications, 3VA molded case circuit breakers are installed in a fixed position in switchboards or distribution boards. The breaker is normally secured by fastening bolts directly to the mounting plate or other suitable supporting stays of the cubicle. The cables or busbars of the main circuits are connected directly to the 3VA molded case circuit breaker by various terminals or connectors.
Page 202 Accessories 4.4 Plug-in and draw-out technology Plug-in technology Plug-in technology is the less expensive and more space-saving of the two solutions. The 3VA molded case circuit breaker is inserted in the appropriate plug-in socket and fitted with plug-in contacts which make a keyed, friction-locked connection with the corresponding mating contacts (tulip-type contacts) in the plug-in socket.
Page 203 Accessories 4.4 Plug-in and draw-out technology Draw-out technology Like the plug-in versions, draw-out versions of 3VA molded case circuit breakers are equipped with plug-in contacts at the main current paths. In addition, side walls including guide and support bolts are bolted to the sides of the 3VA molded case circuit breakers. In this case, the mating contacts are in the draw-out socket.
Page 204 Accessories 4.4 Plug-in and draw-out technology Cable connection With plug-in and draw-out circuit breakers, the cables or busbars are connected to the plug- in socket or the draw-out socket. The termination areas for these versions are designed in the same way as those of the molded case circuit breaker, i.e. all the connection technology which is available for 3VA molded case circuit breakers can be used in the same way for the plug-in and draw-out sockets.
Page 205: Overview Of Variants / Products
Accessories 4.4 Plug-in and draw-out technology 4.4.2 Overview of variants / products Installation overview 3-pole and 4-pole 3VA molded case circuit breakers are available in a version for fixed mounting, as a plug-in version and a draw-out version, as shown in the table below: Apart from the complete kit for plug-in or draw-out technology, a plug-in or draw-out "conversion kit"...
Page 206: General Information
Accessories 4.4 Plug-in and draw-out technology 4.4.3 General information With plug-in and draw-out circuit breakers, the cables or busbars are connected to the plug- in socket or the draw-out socket. The same socket unit is used for the same sizes of both variants.
Page 207: Information About Installation, Built-On And Built-In Components
Accessories 4.4 Plug-in and draw-out technology 4.4.4 Information about installation, built-on and built-in components Securing plug-in and draw-out units to the mounting plate Bolts supplied with complete kit Supplied with each complete kit for plug-in or draw-out technology: ● 4 fastening bolts, metric thread, Phillips pan head The fastening bolts are used to attach the relevant socket unit to a mounting plate or supporting stay.
Page 208: Plug-In Technology
Accessories 4.4 Plug-in and draw-out technology 4.4.5 Plug-in technology 4.4.5.1 Product description Applications The plug-in versions of 3VA molded case circuit breakers are designed for use in complex applications for which speedy replacement of molded case circuit breakers is a basic requirement.
Page 209 Accessories 4.4 Plug-in and draw-out technology With a plug-in system, the molded case circuit breaker is moved into and out of the plug-in socket manually. WARNING Risk of large magnetic forces in the event of short circuits Accident hazard posed by short circuit events. The molded case circuit breaker can be ejected from its socket by the resulting magnetic forces.
Page 210 Accessories 4.4 Plug-in and draw-out technology Scope of supply of the 3VA molded case circuit breaker and the 3VA switch disconnector in molded case circuit breaker design: ● For 3-pole version up to 250 A: 2 assembly bolts ● For 3-pole version up to 630 A and 4-pole version: 4 assembly bolts ①...
Page 211 Accessories 4.4 Plug-in and draw-out technology Terminal covers As described above, two screw-mounted terminal covers are included in the plug-in socket complete kit and the plug-in socket conversion kit. These feature molded grips to ease withdrawal of the molded case circuit breaker from its socket. Since it requires significant force to remove a molded case circuit breaker from its socket, the plug-in terminal covers are bolted to the contact unit.
Page 212 Accessories 4.4 Plug-in and draw-out technology Auxiliary circuit connectors Molded case circuit breakers or switch disconnectors in molded case circuit breaker design are frequently equipped with internal accessories, e.g. with an auxiliary switch, auxiliary release, etc. A broad range of internal accessory components is also available for the 3VA molded case circuit breaker.
Page 213 Accessories 4.4 Plug-in and draw-out technology Position signaling in the plug-in socket Several position signaling switches (number depends on socket size) can be fitted in the plug-in socket. Auxiliary switches are capable of signaling "Plug-in unit - MCCB correctly bolted to plug-in socket" via electrical connections. For further information, please refer to chapter Position signaling switches (Page 225).
Page 214: Combination With Other Accessories
Accessories 4.4 Plug-in and draw-out technology Benefits of plug-in technology ● Defective molded case circuit breakers can be replaced quickly and easily ● Clear visual evidence of safe electrical isolation of main circuits ● Remote signaling of molded case circuit breaker positions: –...
Page 215: Draw-Out Technology
Accessories 4.4 Plug-in and draw-out technology 4.4.6 Draw-out technology 4.4.6.1 Product description Typical applications for draw-out versions of 3VA molded case circuit breakers are installations in which inspections and overhauls need to be carried out at regular intervals and, for reasons of safety, clear visual evidence of safe electrical isolation of plant sections must be provided at short notice so that work can commence.
Page 216 Accessories 4.4 Plug-in and draw-out technology Defined positions ● CONNECT position: The molded case circuit breaker is connected to the main circuits. The auxiliary circuits are also electrically connected to the installation via the auxiliary circuit connectors. This is the normal operating position of the molded case circuit breaker. ●...
Page 217 Accessories 4.4 Plug-in and draw-out technology Components of a complete kit for draw-out technology A complete kit for draw-out technology contains all the components required to convert the fixed mounting version of a molded case circuit breaker or switch disconnector to a draw-out version.
Page 218 Accessories 4.4 Plug-in and draw-out technology Components of a conversion kit for draw-out technology ● Plug-in contacts for attachment to the main terminals of the 3VA molded case circuit breaker – 3-pole: 6 plug-in contacts – 4-pole: 8 plug-in contacts ●...
Page 219 Accessories 4.4 Plug-in and draw-out technology Installation instructions The draw-out socket is permanently mounted in the cubicle by means of the fastening bolts included in the complete kit for draw-out technology. The molded case circuit breaker / switch disconnector in molded case circuit breaker design is supplied with two assembly bolts (3-pole version) or four assembly bolts (4-pole version).
Page 220 Accessories 4.4 Plug-in and draw-out technology Auxiliary circuit connectors 3VA molded case circuit breakers or 3VA switch disconnectors are frequently equipped with internal accessories, e.g. auxiliary switches and auxiliary releases. A broad range of internal accessory components is also available for the 3VA molded case circuit breaker. For further information, please refer to chapter Internal accessories (Page 146).
Page 221 Accessories 4.4 Plug-in and draw-out technology Protection against unauthorized operation of molded case circuit breaker Padlocks for protection against unauthorized operation To provide protection against unauthorized operation of the molded case circuit breaker, padlocks can be inserted through the plastic frame opening of the padlock locking unit on the right side panel of the draw-out socket.
Page 222 Accessories 4.4 Plug-in and draw-out technology Cylinder lock for protection against unauthorized operation A cylinder lock can be retrofitted in the right-hand side panel of the draw-out socket. Like the plastic frame and padlocks, this cylinder lock is capable of locking a molded case circuit breaker in either the CONNECT, TEST or DISCON position.
Page 223 Accessories 4.4 Plug-in and draw-out technology In addition to the status information listed above, the position of the molded case circuit breaker in the draw-out unit can also be transferred. For this purpose, the molded case circuit breaker and the draw-out socket must be equipped with the communications interface for the draw-out unit.
Page 224: Combination With Other Accessories
Accessories 4.4 Plug-in and draw-out technology Markings are visible on the door feedthrough to help the user identify the current position of the molded case circuit breaker as it is moved into or out of the cubicle. Since mounting dimensions may vary slightly, however, these markings should be regarded as a rough guide only.
Page 225: Accessories For Plug-In And Draw-Out Units
Accessories 4.4 Plug-in and draw-out technology 4.4.7 Accessories for plug-in and draw-out units 4.4.7.1 Description of individual product variants Position signaling switches These auxiliary switches are capable of signaling a variety of states via electrical connections. The position signaling switch is available in only one version. Applications: ●...
Page 226 Accessories 4.4 Plug-in and draw-out technology Signal "Position of molded case circuit breaker in the draw-out unit" Up to three position signaling switches can be integrated in the draw-out unit in order to transmit breaker position information to monitoring and control systems. They are installed in the right-hand side wall of the unit at the positions indicated in the diagram below: ①...
Page 227 Accessories 4.4 Plug-in and draw-out technology If the molded case circuit breaker is not in any of the defined positions, the switching position indicator displays the word UNBLOCK on a white background. In this position, the molded case circuit breaker is either off (position OFF, contacts open) or tripped (position TRIP, contacts open).
Page 228 Accessories 4.4 Plug-in and draw-out technology Signal "Draw-out unit locked / open" A position signaling switch to transmit this signal is installed in position 44 of the right-hand side wall of the draw-out unit. A position signaling switch in position 44 outputs a signal which indicates whether the padlock locking unit is in the OUT position, thereby locking the draw-out unit.
Page 229 Accessories 4.4 Plug-in and draw-out technology Signal "Plug-in unit - MCCB correctly bolted to plug-in socket" This option is provided for plug-in units only. Depending on the socket size, up to two position signaling switches can be installed in slot No. 46. ①...
Page 230 Accessories 4.4 Plug-in and draw-out technology Communications interface for draw-out unit The pre-assembled cable set which functions as the communications interface for the draw- out unit consists of a pre-assembled cable with a mini USB port at one end and three special position signaling switches at the other.
Page 231 For detailed instructions on how to install the communications interface for the draw-out unit, please refer to the relevant Operating Instructions (http://support.automation.siemens.com/WW/view/en/80597324). For instructions on how to transfer data via the remote transmission link, please refer to the Operating Instructions for the COM800 breaker data server.
Page 232 Accessories 4.4 Plug-in and draw-out technology A total of nine auxiliary circuit connectors can be installed depending on the size of the molded case circuit breaker and the size of the plug-in or draw-out socket. The slots for auxiliary circuit connectors are labeled from right to left in the socket, starting at 1. ①...
Page 233 Accessories 4.4 Plug-in and draw-out technology ① Fixing tongue (breaker end) ② Fixing hook (socket end) ③ Latching element (socket end) The socket-end half of the auxiliary circuit connectors is simply snapped into the socket. Various cable routing openings and ducts are provided in the socket and the molded case circuit breaker.
Page 234 Accessories 4.4 Plug-in and draw-out technology Terminal cover for a molded case circuit breaker converted to plug-in or draw-out technology Terminal covers available to order as additional accessories are used to cover the termination area of plug-in and draw-out units. Two screw-mounted terminal covers are included in the complete kits and the conversion kits for plug-in and draw-out technology.
Page 235 Accessories 4.4 Plug-in and draw-out technology Cable cage Cable cages are used to attach the breaker-end half of auxiliary circuit connectors to the molded case circuit breaker. They are also designed to act as cable ducts for installing wires from internal accessories to the auxiliary circuit connector. For further information about cable cages, please refer to chapter Auxiliary circuit connector (Page 231).
Page 236: Overview Of Technical Specifications
Accessories 4.4 Plug-in and draw-out technology 4.4.7.2 Overview of technical specifications Technical specifications of the accessories for internal components of molded case circuit breakers in plug-in and draw-out technology: 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 237: Combination With Other Accessories
Accessories 4.4 Plug-in and draw-out technology 4.4.7.3 Combination with other accessories Information about combination with other accessories ● The communications interface for the draw-out unit and the switches for signaling the position of the molded case circuit breaker in the draw-out unit are mutually compatible. For further information, please refer to the following chapters: Position signaling switches (Page 225) Communications interface for draw-out unit (Page 230)
Page 238: Manual Operators
Accessories 4.5 Manual operators Manual operators The manual operators for 3VA molded case circuit breakers are described in this chapter. Overview of manual operators The manual operators available for 3VA molded case circuit breaker are listed below: ● Front mounted rotary operator (optionally with door interlock) ●...
Page 239: Opening, Closing And Resetting The 3Va Molded Case Circuit Breaker
Accessories 4.5 Manual operators 4.5.1 Opening, closing and resetting the 3VA molded case circuit breaker Opening and closing ● To close the 3VA molded case circuit breaker: Turn the manual operator to the ON (I) position. ● To open the 3VA molded case circuit breaker: Turn the manual operator to the OFF (O) position.
Page 240 Accessories 4.5 Manual operators Resetting the manual operator after the molded case circuit breaker has tripped When the molded case circuit breaker trips, the manual operator moves automatically from the ON (I) to the TRIP position. The molded case circuit breaker remains in the tripped state until the manual operator is reset: 1.
Page 241: Front Mounted Rotary Operator
Accessories 4.5 Manual operators 4.5.2 Front mounted rotary operator The front mounted rotary operator is available in two versions: ● With door interlock ● Without door interlock ① ⑤ Front mounted rotary operator with door Cylinder lock device interlock ② ⑥...
Page 242 Accessories 4.5 Manual operators Switching position indicator of front mounted rotary operator ① ④ ON: Breaker closed OFF: Breaker open ② ⑤ TRIP: Breaker tripped RESET: Reset following a trip ③ Mounting position Front mounted rotary operator with door interlock The front mounted rotary operator with door interlock projects through the cubicle door.
Page 243 Accessories 4.5 Manual operators Procedure 1. Press the door interlocking pin with a sharp object. 2. Hold the pin down while the door is opened. Testing the tripping mechanism The button <PUSH TO TRIP> can be pressed to perform a function test on the tripping mechanism.
Page 244: Door Mounted Rotary Operator
Accessories 4.5 Manual operators 4.5.3 Door mounted rotary operator With the door mounted rotary operator installed, it is possible to operate the molded case circuit breaker through the control cubicle door without opening the door. ① Door mounted rotary operator ②...
Page 245 Accessories 4.5 Manual operators Door interlock with door mounted rotary operator The door interlock of the door mounted rotary operator locks the door as soon as the door mounted rotary operator is turned to position ON (I). Overriding the door interlock The door interlock can be overridden by a deliberate action.
Page 246 Accessories 4.5 Manual operators Tolerance compensator Door mounted rotary operators are supplied as standard with a tolerance compensator. This device compensates any potential minor offset between the rotary switch of the cubicle doors and the shaft of the door mounted rotary operator. ①...
Page 247 Accessories 4.5 Manual operators Testing the tripping mechanism The button <PUSH TO TRIP> can be pressed to perform a function test on the tripping mechanism. Procedure 1. Turn the door mounted rotary operator to the OFF (O) position. 2. Open the cubicle door. 3.
Page 248 Accessories 4.5 Manual operators Supplementary handle for door mounted rotary operator The supplementary handle can be used to operate the molded case circuit breaker when the cubicle door is open. Use the supplementary handle to close the molded case circuit breaker: A deliberate action is required to turn the molded case circuit breaker to the ON (I) position: 1.
Page 249: Side Wall Mounted Rotary Operator
Accessories 4.5 Manual operators 4.5.4 Side wall mounted rotary operator The side wall mounted rotary operator allows the molded case circuit breaker to be operated through the right-hand or left-hand side wall of the cubicle. ① Side wall mounted rotary operator ②...
Page 250 Accessories 4.5 Manual operators Side wall mounted rotary operator with mounting plate The side wall mounted rotary operator is available in a version with mounting plate for molded case circuit breakers up to 250 A. The mounting plate can be installed on the right- hand or left-hand side panel.
Page 251: Locking And Interlocking For Manual Operators
Accessories 4.5 Manual operators 4.5.5 Locking and interlocking for manual operators The following locking and interlocking systems are deployed: ● Locking by the handle ● Locking and interlocking by the rotary operator ● Mutual interlocking by Bowden cables 4.5.5.1 Locking by the handle The following manual operators can be locked by the handle: ●...
Page 252 Accessories 4.5 Manual operators Door mounted rotary operator and side wall mounted rotary operator Lockable switching positions: ● Position OFF (O) When the door mounted rotary operator or the side wall mounted rotary operator is locked in the OFF (O) position, the molded case circuit breaker cannot be closed, nor can the cubicle door be opened.
Page 253: Locking And Interlocking By The Rotary Operator
Accessories 4.5 Manual operators 4.5.5.2 Locking and interlocking by the rotary operator The following manual operators can be locked and interlocked by the rotary operator: ● Front mounted rotary operator ● Rotary operator with shaft stub ● Door mounted rotary operator ●...
Page 254 Accessories 4.5 Manual operators Locking or interlocking using a cylinder lock (type Ronis) Rotary operators can be locked or interlocked (depending on how the lock holder is installed) by means of the cylinder lock (type Ronis). Example of a front mounted rotary operator and a rotary operator with shaft stub: Locking with cylinder lock (type Ronis): The cylinder lock (type Ronis) locks the rotary operators in the OFF (O) position.
Page 255 Accessories 4.5 Manual operators Locking with cylinder lock (Kaba) The door mounted rotary operator and the side wall mounted rotary operator can be locked by means of a cylinder lock (type Kaba) fitted in the cubicle door or side panel. The cylinder lock (type Kaba) is not included in the scope of supply.
Page 256: Mutual Interlocking Of 3Va Molded Case Circuit Breakers By Means Of Bowden Cables
Accessories 4.5 Manual operators 4.5.5.3 Mutual interlocking of 3VA molded case circuit breakers by means of Bowden cables Bowden cables can be used to implement a mutual interlock between up to three 3VA molded case circuit breakers. For this purpose, Bowden cable modules are fitted in the manual operator.
Page 257 Accessories 4.5 Manual operators Interlocks can be implemented between the following 3VA molded case circuit breakers: 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 258: Degree Of Protection
Accessories 4.5 Manual operators 4.5.6 Degree of protection When fitted with an escutcheon (see illustration below), a front mounted rotary operator installed in the cubicle door has degree of protection IP30. Note To ensure that the control cabinet door can still be opened, the front mounted rotary operator must not project over the cover frame by more than 5 mm when the door is closed.
Page 259: Accessories
Accessories 4.5 Manual operators 4.5.7 Accessories Illumination kit With this kit installed, the front edge of the handle of the front mounted operator of the door mounted rotary operator or side wall mounted rotary operator lights up to indicate the switching position of the circuit breaker.
Page 260: Motor Operators
Accessories 4.6 Motor operators Motor operators 4.6.1 Motor operator MO320 The motor operator MO320 transmits commands via electrical control cables to open and close the molded case circuit breaker. The source of commands transmitted via electrical control cables can be a pushbutton or a PLC, for example. Motor operators must also used in conjunction with automatic transfer control devices.
Page 261 Accessories 4.6 Motor operators Description of front panel The front panel of the motor operator MO320 features a switching position indicator and an LED labeled "TRIP". With its clear switching position indication, the motor operator MO320 meets the requirements pertaining to isolating features stipulated by IEC / EN 60947-1. Switching position indication on the front panel LED status displays See also chapter Faults, causes of faults and rectification of faults (Page 267).
Page 262: Manual, Auto And Lock Modes
Accessories 4.6 Motor operators 4.6.1.1 MANUAL, AUTO and LOCK modes The motor operator MO320 is switched to MANUAL or AUTO mode when the plastic window is opened (MANUAL) or closed (AUTO). MANUAL: When the plastic window is open, the motor operator MO320 is in MANUAL mode. The motor operator is moved to position ON (I) or OFF (O) by manual operation of the handle.
Page 263: Opening, Closing And Resetting The 3Va Molded Case Circuit Breaker
Accessories 4.6 Motor operators 4.6.1.2 Opening, closing and resetting the 3VA molded case circuit breaker Opening and closing in MANUAL mode The plastic window is open, the motor operator is in MANUAL mode. The supply to the LEDs is also disconnected, but the motor operator remains fully operational. ●...
Page 264 Accessories 4.6 Motor operators ● Open the 3VA molded case circuit breaker: Turn the handle clockwise until the switching position indicator displays OFF (O). The molded case circuit breaker is now OFF (O). The main contacts are open. Opening and closing in AUTO mode The plastic window is closed, the motor operator is in AUTO mode.
Page 265 Accessories 4.6 Motor operators Resetting the molded case circuit breaker If the 3VA molded case circuit breaker has tripped, the LED labeled "TRIP" lights up ① Reset mode setting The method by which the 3VA molded case circuit breaker is reset by the motor operator depends on the selected reset mode.
Page 266 Accessories 4.6 Motor operators Connection diagram for control of the motor operator MO320 Note An EMERGENCY-STOP circuit is implemented by means of shunt trips (Page 146). For further circuit diagrams, see chapter "Circuit diagrams" (Page 423). The M0320 motor operator is edge-controlled, i.e. it reacts only to the positive edge of an ON or OFF command at the relevant terminals 3 and 4.
Page 267: Faults, Causes Of Faults And Rectification Of Faults
Accessories 4.6 Motor operators 4.6.1.3 Faults, causes of faults and rectification of faults 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 268: Technical Specifications
Accessories 4.6 Motor operators 4.6.2 Technical specifications Motor operator MO320 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 269: Locking And Interlocking
Accessories 4.7 Locking and interlocking Locking and interlocking 4.7.1 General information With all types of 3VA molded case circuit breaker, a basic distinction is made between: ● Locking of molded case circuit breakers ● Interlocking of molded case circuit breakers 4.7.1.1 Locking Padlock devices can be used to lock 3VA molded case circuit breakers in the OFF (O) or ON...
Page 270: Interlocking
Accessories 4.7 Locking and interlocking Locking a molded case circuit breaker in the ON (I) position It is also possible to safely lock a 3VA molded case circuit breaker in the ON (I) position using a padlock device. The breaker contacts cannot be opened when it is locked in this position.
Page 271 Accessories 4.7 Locking and interlocking Principle of two mutually interlocked 3VA molded case circuit breakers: ① Molded case circuit breaker blocked/locked in the safe switching state OFF (O) ② Molded case circuit breaker released for operation The following interlocking systems are available for 3VA molded case circuit breakers: ●...
Page 272: Locking
Accessories 4.7 Locking and interlocking 4.7.2 Locking The following locking devices are available for 3VA molded case circuit breakers: ● Padlock device for the handle ● Cylinder locks for locking the 3VA molded case circuit breaker 4.7.2.1 Padlock device for the handle The padlock device for the handle is directly attached to the handle of the 3VA molded case circuit breaker and latched in place.
Page 273: Cylinder Locks For Locking The 3Va Molded Case Circuit Breaker
Accessories 4.7 Locking and interlocking If the application requires the 3VA molded case circuit breaker to be locked in the ON (I) ① position as well, the metal pin must be removed by pliers from the handle, see illustration below. This deliberate action is a safety precaution and prevents accidental locking of the breaker in the ON position.
Page 274 Accessories 4.7 Locking and interlocking To provide a cylinder lock, the following 2 components need to be ordered: ● One cylinder lock (type Ronis) 1 lock and 2 keys are always included in the order. Selection of the lock number is highly flexible, i.e. it can be selected from a choice of four different lock numbers.
Page 275 Accessories 4.7 Locking and interlocking Locking in the OFF (O) position The cylinder lock (type Ronis) is installed with the adapter kit and the cylinder lock housing for locking in the right-hand accessories compartment of the 3VA molded case circuit breaker so that the breaker can be locked in the OFF (O) position.
Page 276 Accessories 4.7 Locking and interlocking To lock the 3VA molded case circuit breaker in the OFF (O) position, the key must be turned to the vertical "locked" position. Locking in the ON (I) position For safety reasons, a deliberate action is required to lock the breaker in the ON (I) position. The slide for locking in the ON position must be used for this purpose.
Page 277: Front Interlocking
Accessories 4.7 Locking and interlocking 4.7.3 Front interlocking Front interlocks are installed on the front panel of the 3VA molded case circuit breaker. The following interlocking devices are available for 3VA molded case circuit breakers: ● Cylinder locks for implementing interlocks between an unlimited number of molded case circuit breakers ●...
Page 278 Accessories 4.7 Locking and interlocking ● One adapter kit The adapter kit transfers the motion of the lock to the switching mechanism. The article number includes the adapter kit and two cylinder lock housings. ① Slide for locking in the OFF position ②...
Page 279 Accessories 4.7 Locking and interlocking Installing the cylinder lock in the accessories compartment The cylinder lock (type Ronis) is installed together with the adapter kit and the interlocking version of the cylinder lock housing in the right-hand accessories compartment of the molded case circuit breaker.
Page 280 Accessories 4.7 Locking and interlocking Interlocking of molded case circuit breakers WARNING Use of more than one key poses safety hazard and/or risk of damage to property Leave only 1 key inserted in one of the circuit breakers included in the interlock arrangement.
Page 281 Accessories 4.7 Locking and interlocking 4. Use the single key to turn the cylinder lock of the 3VA molded case circuit breaker to be released to the "unlocked" position. Once the key is in the "unlocked" position, it must not be removed. 5.
Page 282: Sliding Bar With Bowden Cable: Modules For Sliding Bar With Bowden Cable
Accessories 4.7 Locking and interlocking Installation of other accessories When the cylinder lock is fitted in the accessories compartment of the circuit breaker, some other accessories cannot be installed, see chapter Possible combinations of of accessories (Page 142). See also Manual operators (Page 238) Draw-out technology (Page 215) 4.7.3.2...
Page 283 Accessories 4.7 Locking and interlocking A Bowden cable must be installed in addition to the sliding bar modules. This cable prevents the slides from releasing more than one molded case circuit breaker at any one time. As a result, only one 3VA molded case circuit breaker at a time can be operated and only one molded case circuit breaker can be in the ON (I) position.
Page 284 Accessories 4.7 Locking and interlocking Interlock combinations Interlocks can be implemented between the following 3VA molded case circuit breakers: Possible combinations of handle positions When a sliding bar with Bowden cable is installed to interlock two 3VA molded case circuit breakers, the following combinations of handle position are possible: When a sliding bar with Bowden cable is installed to interlock three 3VA molded case circuit breakers, the following combinations of handle position are possible:...
Page 285: Sliding Bar
Accessories 4.7 Locking and interlocking 4.7.3.3 Sliding bar The sliding bar can be used to implement an interlock between three 3VA molded case circuit breakers of the same size. Up to three padlocks (shackle diameter of between 4.5 and 8 mm) can be attached in order to lock the bar in position. Installing the sliding bar ①...
Page 286 Accessories 4.7 Locking and interlocking Example of an interlock between two 3VA molded case circuit breakers: Scope of delivery The order number includes the following items: ● 2 side plates ● 1 locking slide Interlock combinations The following interlock combinations can be implemented with the sliding bar: ●...
Page 287 Accessories 4.7 Locking and interlocking When a sliding bar interlock between three 3VA molded case circuit breakers is locked by padlocks, the following combinations of handle position are possible: Installation of other accessories When the front sliding bar is fitted, some other accessories cannot be installed, see chapter Possible combinations of of accessories (Page 142).
Page 288: Rear Interlock
Accessories 4.7 Locking and interlocking 4.7.4 Rear interlock Rear interlock The rear interlock system is capable of creating an interlock between two 3VA molded case circuit breakers and does not restrict the number of accessories which can be assembled on the front panel of the molded case circuit breaker.
Page 289 Accessories 4.7 Locking and interlocking Note For installation instructions, please refer to the operating instructions for the rear interlock. Scope of delivery The order number includes the following items: ● Two interlocking modules ● Mounting accessories ● Interlocking rod Interlock combinations The following interlock combinations are possible: ●...
Page 290 Accessories 4.7 Locking and interlocking Aid to facilitate installation of rear interlock An installation aid is available for all 3VA molded case circuit breakers. It facilitates installation of the rear interlock and reduces the amount of work required to the cubicle mounting plate.
Page 291 Accessories 4.7 Locking and interlocking 1. Assemble installation frame: ① – Place mounting plates on the molded case circuit breaker. – Install rear interlock. ② – Bolt the DIN rails to the adapter plates. 2. Bolt the assembled installation frame to the cubicle mounting plate. No further work to the cubicle mounting plate is required.
Page 292 Accessories 4.7 Locking and interlocking Rear interlock for plug-in and draw-out units In order to use a rear interlock for plug-in or draw-out versions of the molded case circuit breakers, the tappet needs to be lengthened. The tappet extension transfers the interlocking motion of the modules through the plug-in socket or the draw-out socket.
Page 293: Residual Current Devices
Accessories 4.8 Residual current devices Residual current devices Residual current devices afford fault protection (formerly referred to as: protection in case of indirect contact) and supplementary protection (formerly referred to as: protection in case of direct contact) in low-voltage systems. In the event of a basic insulation failure or direct contact with live components, they provide some degree of protection to persons, material assets and livestock against harm.
Page 294 Accessories 4.8 Residual current devices While residual current devices attached to the circuit breakers are supplied with voltage from all connected phases of the system to be monitored, the modular residual current device (MRCD) is supplied from a 1-phase auxiliary voltage source (internal or external). The modular residual current device utilizes an undervoltage release (UVR) or a shunt trip.
Page 295 Accessories 4.8 Residual current devices Basic RCD310 and Basic RCD510 Side-mounted residual current devices are available for 3VA1 molded case circuit breakers and 3VA1 switch disconnectors with box terminals up to 250 A. These residual current devices are optimally designed for installation in distribution boards. Features The key features of the RCD310 and RCD510 series are: ●...
Page 296 Accessories 4.8 Residual current devices Advantages ● Slimline, side mounted design (30 mm) leaves space for other components in the distribution board. ● The residual current devices, the 3VA1 molded case circuit breakers and the 3VA1 switch disconnectors all have a cover size of 45 mm, so that they are easy to install, for example, adjacent to miniature circuit breakers in a distribution board.
Page 297 Accessories 4.8 Residual current devices A special "ADVANCED" residual current device has been developed for use with 3VA2 molded case circuit breakers. Advanced RCD820 The RCD820 series is suitable for use in applications with exacting technical requirements: ● High residual current response values ●...
Page 298 Accessories 4.8 Residual current devices Modular residual current device The modular residual current device (MRCD) is ideal for applications which require a high degree of flexibility. It can be retrofitted easily in an existing installation, for example, in order to provide residual current protection without the need for any major modifications to the existing application.
Page 299: Possible Combinations Of Residual Current Devices And 3Va Circuit Breakers
Accessories 4.8 Residual current devices 4.8.1.1 Possible combinations of residual current devices and 3VA circuit breakers 3-pole 4-pole Fixed-mounted circuit breaker Plug-in circuit breaker Draw-out circuit breaker Not compatible with switch disconnector 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 300: Residual Current Devices For Mounting On Circuit Breakers
Accessories 4.8 Residual current devices 4.8.2 Residual current devices for mounting on circuit breakers The RCD310, RCD510, RCD320, RCD520 and RCD820 residual current devices are available as accessories for mounting on specific 3VA molded case circuit breakers up to the largest circuit breaker size/current rating.
Page 301 Accessories 4.8 Residual current devices Device type All residual current devices meet the requirements for device type A, i.e. they are capable of detecting all sinusoidal AC residual currents and pulsating DC residual currents. Combination with external accessories DIN rail adapters DIN rail adapters are available as accessories for side-mounted residual current devices RCD310 and RCD510 up to 160 A.
Page 302: Side Mounted Residual Current Devices Basic Rcd310 And Basic Rcd510
Accessories 4.8 Residual current devices 4.8.2.1 Side mounted residual current devices Basic RCD310 and Basic RCD510 Front view of Basic RCD310 and Basic RCD510 RCD310 ① ⑪ Type designation Standard ② ⑫ Electromagnetic release (RCR = Residual Article number Current Release) ③...
Page 303 Accessories 4.8 Residual current devices RCD510 ① ⑪ Type designation Standard ② ⑫ Electromagnetic release (RCR = Residual Article number Current Release) ③ ⑬ Maximum rated operational current, rated Rated insulation voltage and rated impulse operational voltage and frequency strength ④...
Page 304 Accessories 4.8 Residual current devices Description of front panel view Display elements "Ready" signals and alarms ● "Ready" signal of the residual current device: The LED labeled "ACT" stands for ACTIVE and lights up when the device is ready to operate.
Page 305 Accessories 4.8 Residual current devices LED displays Tripped display The <RESET> button is not only used to reset the residual current device, but also as a mechanical indication that the unit has "tripped". If a residual current is detected or the button <TEST>...
Page 306 Accessories 4.8 Residual current devices Operator controls Insulation tests It is absolutely essential to isolate the evaluation electronics circuit while insulation tests are in progress in order to protect the circuit against potential damage on the one hand and to prevent detection of insulation faults due to the power pack on the other.
Page 307 Accessories 4.8 Residual current devices Resetting If the residual current device trips the molded case circuit breaker/switch disconnector due to a high residual current or actuation of the test button, the <RESET> button on the RCD is released. At the same time, the trip alarm switch which is mechanically coupled with the <RESET>...
Page 308 Accessories 4.8 Residual current devices Button for setting the response current I Δn The response current can be set in 8 steps, ranging from 0.03 A to maximum 5 A. Each response current has a dedicated setting range. The corresponding response current is set as soon as the button is latched in the setting range.
Page 309 Accessories 4.8 Residual current devices Sealable protective covers of the residual current device ① Contact hazard protective cover over auxiliary contacts ② Transparent protective cover over setting buttons ③ Contact hazard protective cover over main current paths Transparent protective cover over setting buttons In order to prevent unauthorized access to the setting buttons for I and Δt, the transparent Δn...
Page 310 Accessories 4.8 Residual current devices Terminals Note Cables for the following terminals must be routed separately from the main circuits. Their maximum cable length is 300 m. A number of auxiliary contacts which perform different functions are located underneath a contact hazard protective cover: Alarm switches TRIP-IND (TRIP INDICATOR)
Page 311 Accessories 4.8 Residual current devices External control of the residual current release (RCR) MCCB-TRIP Although the RCR is utilized by the residual current device, it can also be accessed externally via a floating contact by means of the auxiliary contact MCCB-TRIP. The floating contact must be capable of switching a 5 mA current with a voltage supply of 24 V DC.
Page 312 Accessories 4.8 Residual current devices Status indicators The table below illustrates the behavior of pre-alarm and tripped signals on RCD310 or RCD510 units in response to various user actions and residual currents. 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 313 Accessories 4.8 Residual current devices Terminal labeling and cable installation Labeling of terminals The labels for individual terminals are printed on the rear of the contact hazard protection cover for auxiliary contacts. 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 314 Accessories 4.8 Residual current devices Cable installation Cable ducts for bringing out cables are provided to the left and right on the residual current device. ① Cable duct Other labels on front panel Approvals The residual current device bears the CE mark. For an overview of all approvals, please refer to Appendix (Page 505).
Page 315 Accessories 4.8 Residual current devices Installation The side mounted residual current device is attached to the left-hand side of the molded case circuit breaker or switch disconnector. No tools are required: 1. Push the molded case circuit breaker/switch disconnector onto the residual current device along the guides at the top.
Page 316 Accessories 4.8 Residual current devices The side mounted residual current devices feature through-hole technology. ① Box terminals of the molded case circuit breaker ② Phase barriers ③ Summation current transformer With this technology, the cables are simply guided through the summation current ③...
Page 317 Accessories 4.8 Residual current devices Tripping In the event of a fault, the side mounted residual current device employs a residual current release (RCR) to trip the molded case circuit breaker or switch disconnector. This release is installed in the accessories compartment to the left of the handle. The RCR and the connecting cable are included in the scope of supply of the side mounted residual current device.
Page 318 Accessories 4.8 Residual current devices Use of the residual current device as a pure display unit The RCD310 and RCD510 residual current devices can also operate as pure display units without a tripping function, i.e. they detect and signal residual currents, but do not trip the molded case circuit breaker or switch disconnector nor interrupt the circuit.
Page 319: Loadside Residual Current Devices Basic Rcd320 And Basic Rcd520
Accessories 4.8 Residual current devices 4.8.2.2 Loadside residual current devices Basic RCD320 and Basic RCD520 Loadside residual current devices are also available to order for 3VA1 molded case circuit breakers. 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 320 Accessories 4.8 Residual current devices Front view of Basic RCD320 and Basic RCD520 RCD320 ① ⑪ Circuit breaker Article number ② ⑫ Type designation Maximum rated operational current, rated operational voltage and frequency ③ ⑬ Standard Setting button for response current ④...
Page 321 Accessories 4.8 Residual current devices RCD520 ① ⑪ Circuit breaker Article number ② ⑫ Type designation Maximum rated operational current, rated operational voltage and frequency ③ ⑬ Standard Setting button for delay time ④ ⑭ Approval Setting button for response current ⑤...
Page 322 Accessories 4.8 Residual current devices Description of front panel view Display elements "Ready" signals and alarms ● "Ready" signal of the residual current device: The LED labeled "ACT" stands for ACTIVE and lights up when the device is ready to operate.
Page 323 Accessories 4.8 Residual current devices LED displays Tripped display The <RESET> button is not only used to reset the residual current device, but also as a mechanical indication that the unit has "tripped". If a residual current is detected or the button <TEST>...
Page 324 Accessories 4.8 Residual current devices Operator controls Insulation tests It is absolutely essential to isolate the evaluation electronics circuit while insulation tests are in progress in order to protect the circuit against potential damage on the one hand and to prevent detection of insulation faults due to the power pack on the other.
Page 325 Accessories 4.8 Residual current devices Resetting If the residual current device trips the molded case circuit breaker due to a high residual current or actuation of the test button, the <RESET> button on the RCD is released. At the same time, the trip alarm switch which is mechanically coupled with the <RESET> button also signals that a trip has occurred.
Page 326 Accessories 4.8 Residual current devices Button for setting the response current I Δn The response current can be set in 8 steps, ranging from 0.03 A to maximum 5 A. Each response current has a dedicated setting range. The corresponding response current is set as soon as the button is latched in the setting range.
Page 327 Accessories 4.8 Residual current devices Sealable protective covers of the residual current device ① Contact hazard protective cover over main current paths and auxiliary contacts ② Transparent protective cover over setting buttons Transparent protective cover over setting buttons In order to prevent unauthorized access to the setting buttons for I and Δt, the transparent Δn cover over the settings buttons can be optionally sealed.
Page 328 Accessories 4.8 Residual current devices Terminals Note Cables for the following terminals must be routed separately from the main circuits. Their maximum cable length is 300 m. A number of auxiliary contacts which perform different functions are located underneath the contact hazard protective cover: 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 329 Accessories 4.8 Residual current devices Alarm switch TRIP-IND (TRIP INDICATOR) A tripped signal can be output via the floating contact for display via a warning lamp, for example. This trip alarm switch operates as soon as the residual current exceeds the response current setting value and has therefore caused the residual current device to trip.
Page 330 Accessories 4.8 Residual current devices Cable installation Cable ducts for bringing out cables are provided to the left and right on the residual current device. ① Cable duct Other labels on front panel Approvals The residual current device bears the CE mark. For an overview of all approvals, please refer to Appendix (Page 505).
Page 331 Accessories 4.8 Residual current devices Installation Installation Regardless of the type of connection system installed on the 3VA1 molded case circuit breaker, the residual current devices RCD320 and RCD520 are mounted on the load side (i.e. beneath the thermal-magnetic trip unit) of the breaker: 1.
Page 332 Accessories 4.8 Residual current devices Tripping The molded case circuit breaker is tripped by means of a direct-acting tappet which engages in the breaker mechanism from the residual current device. The electromagnetic trip unit is integrated in the residual current device. Function overview The table below provides an overview of all the functions and data which are available in the residual current device environment:...
Page 333: Loadside Residual Current Device Advanced Rcd820
Accessories 4.8 Residual current devices 4.8.2.3 Loadside residual current device Advanced RCD820 The "Advanced" residual current devices of type RCD820 are available as an accessory for 3VA2 molded case circuit breakers. Front view of Advanced RCD820 ① ⑪ Circuit breaker Product version ②...
Page 334 Accessories 4.8 Residual current devices Description of front panel view Display elements "Ready" signals, communication status and alarms ● "Ready" signal of the residual current device: ① The LED labeled "ACT" stands for ACTIVE and lights up when the device is ready to operate.
Page 335 Accessories 4.8 Residual current devices LED displays 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 336 Accessories 4.8 Residual current devices Tripped display If the residual current device is tripped by a residual current, a remote trip command or actuation of the test button, the trip is signaled mechanically on the RCD, i.e. by a rotating disk.
Page 337 Accessories 4.8 Residual current devices Operator controls Insulation tests It is absolutely essential to isolate the evaluation electronics circuit while insulation tests are in progress in order to protect the circuit against potential damage on the one hand and to prevent detection of insulation faults due to the power pack on the other.
Page 338 Accessories 4.8 Residual current devices Resetting The residual current device and the "tripped" display are reset by means of the handle of the molded case circuit breaker, or the handle of the manual operator or by means of the motor operator.
Page 339 Accessories 4.8 Residual current devices Button for setting the delay time Δt The delay time can be set in 10 steps, ranging from 0 (instantaneous) to a maximum value of 10000 ms. Each delay time has a dedicated setting range. The corresponding delay time is set as soon as the button is latched in the setting range.
Page 340 Accessories 4.8 Residual current devices Sealable protective covers of the residual current device ① Contact hazard protective cover over main current paths and auxiliary contacts ② Transparent protective cover over setting buttons Transparent protective cover over setting buttons In order to prevent unauthorized access to the setting buttons for I and Δt, the transparent Δn cover over the settings buttons can be optionally sealed.
Page 341 Accessories 4.8 Residual current devices Terminals Note Cables for the following terminals must be routed separately from the main circuits. Their maximum cable length is 300 m. A number of auxiliary contacts which perform a broad range of functions are located underneath the contact hazard protective cover.
Page 342 Accessories 4.8 Residual current devices The terminal designations of the relevant contact, the maximum rated voltage and the current carrying capacity are shown in the diagram below. Each relay contact has a maximum rated operational current of 5 A at 230 V AC. Since the terminals have a maximum current carrying capacity of 13.5 A, the current flow across the common terminal (01C = Common) must be limited to 13.5 A when all three signaling switches are used.
Page 343 Accessories 4.8 Residual current devices Other auxiliary inputs Two further auxiliary inputs in the form of screw terminals are also provided: REMOTE-T The residual current device can be remotely tripped via this auxiliary input for test purposes ("Remote test button"), for example. To utilize this function, the customer must connect, for example, a pushbutton (NO contact) to terminals 1Y1 and 1Y2 by means of a two-core, twisted cable which must not be more than 300 m in length.
Page 344 Accessories 4.8 Residual current devices CB-S (Circuit Breaker Switch) If the molded case circuit breaker / RCD820 assembly has an infeed from below (reverse feed), it is absolutely essential to install a standard auxiliary switch (NO contact) 3VA9988- 0AA13 for interrogation of the circuit breaker status to allow resetting of the tripped signal. This switch is installed in the accessories compartment of the molded case circuit breaker.
Page 345 Accessories 4.8 Residual current devices Status indicators The table below illustrates the behavior of pre-alarm and tripped signals on RCD820 devices in response to various user actions and residual currents. Infeed at top Infeed at bottom 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 346 Accessories 4.8 Residual current devices Cable installation Cable ducts for bringing out cables are provided to the left and right on the residual current device. ① Cable duct Other labels on front panel Approvals The residual current device bears the CE mark. For an overview of all approvals, please refer to Appendix (Page 505).
Page 347 Accessories 4.8 Residual current devices Installation Installation Regardless of the type of connection system installed on the 3VA2 molded case circuit breaker, the RCD820 is mounted underneath the electronic trip unit of the circuit breaker. 1. Dismantle the loadside connection components of the molded case circuit breaker and install the supplied connection components for the residual current device.
Page 348 Accessories 4.8 Residual current devices Installation of the RCD-ETU connecting cable 1. Remove the contact hazard protective cover. 2. Open the slide over the interface <X3 RCD>. The slide is fitted as a protective guard (e.g. to protect the interface against soiling). 3.
Page 349 Accessories 4.8 Residual current devices 4. Insert the other end of the connecting cable into the interface <X3 RCD> on the ETU. The RCD-to-ETU connecting cable is free of silicone and halogen and is electrically isolated from the main circuits. The connecting cable is included in the scope of supply.
Page 350 Accessories 4.8 Residual current devices Communications interface The RCD-ETU connecting cable not only carries the trip command, but also acts as the communications interface between the residual current device and the 3VA communication system. Precondition for interface functionality: ● The 3VA2 molded case circuit breaker is equipped with a communication-capable, electronic trip unit (ETU 5-series or 8-series).
Page 351 Accessories 4.8 Residual current devices The table below provides an overview of all the functions and data which are available in the residual current device environment: Value can be read Value can be edited Commands Reset by means of the molded case circuit breaker handle, or the handle of the manual or motor operator Reset in combination with motor operators On request...
Page 352: Technical Specifications
Accessories 4.8 Residual current devices 4.8.2.4 Technical specifications 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 353 Accessories 4.8 Residual current devices 85 V AC minimum voltage (with phase to neutral conductor) for operation of the test function Reset by means of the circuit breaker handle On request Requirement: The 3VA2 molded case circuit breaker is equipped with an ETU 5-series or 8-series 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 354 Accessories 4.8 Residual current devices 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 355: Modular Residual Current Device
Accessories 4.8 Residual current devices 4.8.3 Modular residual current device Thanks to its design, the modular residual current device type A (MRCD) 5SV8101-6KK is compatible with all molded case circuit breaker designs and can therefore be combined with 3VA1 molded case circuit breakers/switch disconnectors and with molded case circuit breakers from the 3VA2 series.
Page 356 Accessories 4.8 Residual current devices Front view ① LED ready to operate and tripped display ② LED alarm display ③ Reset button ④ Test button ⑤ Setting button for alarm/frequency ⑥ Setting button for auto (reclose) for alarm ⑦ Setting button for factory setting (0.03 A, instantaneous) ⑧...
Page 357 Accessories 4.8 Residual current devices Summation current transformer Summation current transformer 5SV8702-0KK (35 mm inside diameter) Suitable summation current transformers Depending on the rated operational current or maximum current of the circuit to be monitored, the following summation current transformers can be used: Alignment of conductors in the summation current transformer In order to prevent measurement errors or spurious tripping, it is important to ensure that the conductors are properly aligned or arranged in the summation current transformer.
Page 358 Accessories 4.8 Residual current devices When installing the MRCD, the summation current transformer and the release, make sure that they are positioned as close as possible to one another so that the cables from the MRCD to the transformer and from the MRCD to the molded case circuit breaker/switch disconnector are as short as possible (please observe the specified minimum clearances!) Further information about the cables to be used is available on request.
Page 359 Accessories 4.8 Residual current devices Example of wiring The circuit diagram below shows a typical MRCD circuit with an undervoltage release. The MRCD has a separate power supply (230 V) in the example application. 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 360: Communication And Link-Up To Other Systems
The power distribution system can be integrated into the information system of the relevant application, but it can also have its own independent information system. Siemens considers the following three scenarios as potential applications: ● Totally Integrated Automation (TIA) for production facilities ●...
Page 361 Accessories 4.9 Communication and link-up to other systems The TIP application scenario offers coordinated power distribution in all phases and on all levels as well as the benefit of an integrated information and communication structure. 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 362 Accessories 4.9 Communication and link-up to other systems Totally Integrated Automation (TIA) and Totally Integrated Power (TIP) 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 363 Accessories 4.9 Communication and link-up to other systems Total Building Solution (TBS) and Totally Integrated Power (TIP) 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 364 Accessories 4.9 Communication and link-up to other systems Communication during all life phases of a power distribution system Communication provides useful support during all life phases of a power distribution system, i.e. during ● engineering and installation, ● operation, and ●...
Page 365 Accessories 4.9 Communication and link-up to other systems communication interfaces and protocols, such as ● PROFIBUS - PROFINET ● Modbus RTU ● Ethernet (Modbus TCP) and ● TD500 test device. Maintenance management example Information for preventive maintenance, e.g. number of switching cycles or operating hours, enables timely planning of personnel and material.
Page 366 Accessories 4.9 Communication and link-up to other systems Automation technology SIMATIC-based solutions for the process and manufacturing industry A key feature of the process and manufacturing industry is its very high power consumption. It therefore makes sense to integrate a power data management system into existing systems.
Page 367 Accessories 4.9 Communication and link-up to other systems Communication via PROFIBUS DP PROFIBUS DP enables integration of a wide range of devices: ● Devices for the protection of distribution boards and loads: Protective devices, such as circuit breakers ● Open-loop and closed-loop control devices: Frequency converters, motor management systems and soft starters ●...
Page 368 4.9 Communication and link-up to other systems Power management with powermanager Siemens offers the powermanager software application, which is designed for power and plant monitoring applications. When used in conjunction with SENTRON measuring devices such as 3VA, 3WL, 3VL and PAC as well as equipment supplied by third parties, powermanager is a power monitoring system that reduces energy costs and increases the availability of electrical supply and distribution systems.
Page 369: 3Va Concept 3Va-Line
Accessories 4.9 Communication and link-up to other systems 4.9.2 3VA concept 3VA-line 3VA molded case circuit breakers employ a flexible communication concept which can be tailored to specific customer requirements. This concept is described in general terms below. 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 370 Accessories 4.9 Communication and link-up to other systems Communication concept structure The structure of the modular communication concept is illustrated in the diagram below ① COM800 breaker data server ② 24 V supply ③ 3VA-line connection ④ Terminating resistor ⑤ Integrated Ethernet interface with Ethernet (Modbus TCP) ⑥...
Page 371 Accessories 4.9 Communication and link-up to other systems The flexible communication solution with the COM800 breaker data server 3VA2 molded case circuit breakers utilize an innovative, modern communication concept. This concept is based on the COM800 breaker data server which can link up to eight 3VA2 molded case circuit breakers to different fieldbus systems.
Page 372 Accessories 4.9 Communication and link-up to other systems Further features of the COM800 breaker data server: ● Write-protect switch for the COM800 breaker data server and connected molded case circuit breakers ● For mounting on a 35 mm DIN rail or screw mounting by integrated fixing lugs ●...
Page 373 Accessories 4.9 Communication and link-up to other systems The smart communication solution with a COM100 For applications involving only one 3VA2 molded case circuit breaker, the COM100 is an ideal alternative to the COM800 breaker data server. The COM100 is identical in design to the COM800 breaker data server, i.e. it is connected directly to the COM060 communication module in the 3VA2 molded case circuit breaker by means of a cable.
Page 374 Accessories 4.9 Communication and link-up to other systems Structure of the COM100 communication concept The structure of the modular communication structure is illustrated in the diagram below: ① COM100 ② 24 V supply ③ 3VA-line connection ④ Terminating resistor ⑤ Integrated Ethernet interface with Ethernet (Modbus TCP) ⑥...
Page 375: Commissioning And Testing Of Electronic Trip Units Using Powerconfig
Accessories 4.9 Communication and link-up to other systems 4.9.3 Commissioning and testing of electronic trip units using powerconfig powerconfig powerconfig performs the following functions for 3VA molded case circuit breakers: ● Parameterization of 3VA ETUs and other 3VA components ● Testing of 3VA ●...
Page 376 Accessories 4.9 Communication and link-up to other systems 3VA molded case circuit breakers and, in some cases, other devices supported by powerconfig are combined in powerconfig to form a project if they are technically, organizationally, or otherwise related. Electronic trip units (ETU), the EFB300 external function box and the communication structure can be commissioned easily by means of the powerconfig software.
Page 377 Accessories 4.9 Communication and link-up to other systems The possible means of connection of the COM800 / COM100 breaker data server are described in detail in the 3VA Communication system manual (see Reference documents (Page 12)). 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 378 Accessories 4.9 Communication and link-up to other systems With 3VA2 molded case circuit breakers and ETUs 3-series, the powerconfig software application is linked to the ETU interface via the USB interface on the PC and the interface on the TD500 test device. 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 379: Efb300 External Function Box
Accessories 4.10 EFB300 external function box 4.10 EFB300 external function box 4.10.1 General information 3VA molded case circuit breakers equipped with the electronic trip unit systems ETU 3- series, ETU 5-series and ETU 8-series can be optionally upgraded with an EFB300 external function box.
Page 380: Power Supply
Accessories 4.10 EFB300 external function box 4.10.2 Power supply The EFB300 external function box is supplied with 24 V DC and acts as a power supply for the connected ETU. This allows the ETU to remain operational even when a 3VA molded case circuit breaker has tripped.
Page 381 Accessories 4.10 EFB300 external function box Overview of functions available with EFB300 external function box 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 382: Zone-Selective Interlocking Zsi
Accessories 4.10 EFB300 external function box 4.10.4 Zone-selective interlocking ZSI Description The microprocessor-controlled, zone-selective interlocking function ZSI has been developed in order to control the total breaking time in low-voltage networks with multiple molded case circuit breakers connected in series. Advantage of ZSI: Regardless of the number of series-connected molded case circuit breakers, all short circuits in the network can be cleared within a maximum time period of 50 ms.
Page 383 Accessories 4.10 EFB300 external function box Connection Use of the ZSI function is conditional upon the connection of a dedicated EFB300 external function box to each 3VA2 molded case circuit breaker. The EFB300 allows molded case circuit breakers to communicate with one another, a capability which is a basic requirement for the ZSI function.
Page 384: Set> Button
Accessories 4.10 EFB300 external function box 4.10.5 <SET> button The <SET> button performs the following functions depending on mode: ● Operating mode: Acknowledgment of signals ● Test mode: Execution of a test function Operating mode The EFB300 external function box is in operating mode during operation. Operation of the EFB300 is indicated by steady illumination of the LED labeled "ACT".
Page 385 Accessories 4.10 EFB300 external function box LED states in operating mode Steady illumination Flashing Simultaneous flashing of all LEDs indicates that the EFB300 is defective. Flashing 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 386 Accessories 4.10 EFB300 external function box Test mode All inputs and outputs can be activated or deactivated manually in test mode. This can be done to determine whether the digital outputs and the ZSI bus are functioning properly and wired correctly. The LED labeled "ACT"...
Page 387 Accessories 4.10 EFB300 external function box 2. Press the <SET> button briefly. LED "ZSI_OUT" flashes, the ZSI output is selected. 3. In order to activate the selected output, press the <SET> button for longer than 2 seconds. The LED of the selected output changes from flashing to steady illumination to indicate activation of the selected output.
Page 388 Accessories 4.10 EFB300 external function box 4. In order to deactivate the output again, press the <SET> button again for longer than 2 seconds. The LED of the activated output will change from steady illumination to flashing. The output is deactivated, but still selected. ①...
Page 389 Accessories 4.10 EFB300 external function box Terminating test mode If the <SET> button is not pressed for a period of three minutes after selection of an output, test mode is terminated automatically and the EFB300 reverts to operating mode. Alternative method: After working through the entire menu structure (only the LED labeled "ACT"...
Page 390 Accessories 4.10 EFB300 external function box LED states in test mode Steady illumination Flashing 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 391: Technical Specifications
Accessories 4.10 EFB300 external function box 4.10.6 Technical specifications 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 392 Accessories 4.10 EFB300 external function box 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 393: Test Devices
Accessories 4.11 Test devices 4.11 Test devices Test devices are required in order to perform local tests on 3VA2 molded case circuit breakers equipped with electronic trip units (ETUs). Two versions of the test devices are available: ● TD300 activation and trip box ●...
Page 394: The Td300 Activation And Trip Box
Accessories 4.11 Test devices 4.11.1 The TD300 activation and trip box The TD300 activation and trip box is a mobile, battery-operated local test device. Its purpose ● To supply the ETU with power so that the ETU can be parameterized when the molded case circuit breaker is switched off and de-energized.
Page 395: Operation And Execution Of The Tripping Function
Accessories 4.11 Test devices 4.11.1.1 Operation and execution of the tripping function CAUTION Personal injury, spurious tripping and irreparable damage to the TD300 activation and trip Use of the TD300 when the molded case circuit breaker is not de-energized can result in personal injury, spurious tripping of the circuit breaker and irreparable damage to the TD300.
Page 396 Accessories 4.11 Test devices LED states when the TD300 and the molded case circuit breaker are switched on Test the molded case circuit breaker (mechanical trip test) 1. Connect the TD300 to the molded case circuit breaker in the correct sequence and switch 2.
Page 397: Technical Specifications Of Td300
Accessories 4.11 Test devices 4.11.1.2 Technical specifications of TD300 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 398: The Td500 Test Device
Accessories 4.11 Test devices 4.11.2 The TD500 test device The TD500 mobile test device can be used to test the different causes of ETU trips. It is therefore useful for checking the proper functioning and correct wiring of all connected system components before the 3VA2 molded case circuit breaker is commissioned.
Page 399 Accessories 4.11 Test devices Description of the TD500 ① Plug-in connector for insertion in the test socket on the ETU ② TD500-to-ETU connecting cable ③ TD500 test device ④ Power supply unit 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 400 Accessories 4.11 Test devices ① ⑨ Connecting cable for ETU Pushbutton for transformer test ② ⑩ LED "LOG" (available memory status) Pushbutton for instantaneous short-circuit trip test I ③ ⑪ LED "RESULT" Pushbutton for short-time delayed short- circuit test S ④...
Page 401 Accessories 4.11 Test devices LED display Interfaces of the TD500 test device The diagram below shows the physical interfaces of the TD500 test device. ① Top of unit: Connection to 3VA2 molded case circuit breaker ② Bottom of unit on 24 V DC supply right: ③...
Page 402 Accessories 4.11 Test devices Compatibility with molded case circuit breakers The TD500 test device can be connected to all 3VA2 molded case circuit breakers equipped with ETU 3-series, 5-series and 8-series. The connecting cable from the test device is inserted in the test socket of the ETU. Data stored in the TD500 The following data are stored in the TD500: ●...
Page 403: Operation And Execution Of Test Functions
Accessories 4.11 Test devices 4.11.2.1 Operation and execution of test functions Connecting and disconnecting the TD500 CAUTION Personal injury, malfunctions and false test results Failure to connect the TD500 test device to the molded case circuit breaker according to the sequence of steps specified below can result in personal injury, malfunctions and false test results.
Page 404 Accessories 4.11 Test devices Disconnecting the TD500 from the 3VA2 molded case circuit breaker 1. Switch off the 3VA2 molded case circuit breaker. 2. Press the pushbutton labeled <ETU Power ON/OFF> on the TD500 test device. The LED labeled "COM" on the TD500 goes out. The ETU is now no longer powered via the TD500 and is deactivated.
Page 405 Accessories 4.11 Test devices Example: Testing the tripping function L on an ETU550 LSI 1. Connect the TD500 test device to the 3VA2 molded case circuit breaker. 2. Switch on the 3VA2 molded case circuit breaker. 3. Press pushbutton <L> on the TD500 test device. The LED in the pushbutton <L>...
Page 406 Accessories 4.11 Test devices Carry out a meter test The purpose of the meter test is to determine whether the ETU is measuring and displaying current correctly. A test current of 0.4 x I is fed into the ETU. The current value measured rated by the ETU is then checked to confirm that it matches the test current.
Page 407 Accessories 4.11 Test devices Test transformers This procedure tests the transformers (energy transformer or Rogowski coil) to determine the following: ● Are transformers installed in the ETU? ● Are transformers correctly installed in the ETU? ● Are the installed transformers functioning correctly? Note In order to carry out this test, it is absolutely essential to disconnect all external power supplies (e.g.
Page 408: Executing The Test Functions Using A Pc And Powerconfig
Accessories 4.11 Test devices 4.11.2.2 Executing the test functions using a PC and powerconfig In addition to its capabilities as a stand-alone test device, the TD500 can also act as a PC interface to the ETU. If the TD500 test device is connected both to the ETU and a PC, the protective functions can be triggered from a PC on which the powerconfig software is installed.
Page 409: Technical Specifications
Accessories 4.11 Test devices 4.11.2.4 Technical specifications 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 410: External Current Transformer For N Conductor
Accessories 4.12 External current transformer for N conductor 4.12 External current transformer for N conductor The external current transformer for N conductor is a current transformer for 3-pole 3VA2 molded case circuit breakers with ETU 5-series and 8-series. Technical specifications 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 411: Escutcheon
Accessories 4.13 Escutcheon 4.13 Escutcheon Molded case circuit breakers or supplementary motor operators or front mounted rotary operators for molded case circuit breakers are often installed in cubicles or distribution boards in such a way that only the operating device is directly accessible. Busbars, cables and the termination area of the molded case circuit breaker are covered by metal or plastic plates in order to prevent direct contact with live components.
Page 412: Product Description
Accessories 4.13 Escutcheon 4.13.1 Product description Escutcheons are available for the following items of equipment from the 3VA product range: ● 3VA1 / 3VA2 molded case circuit breakers, 3-pole or 4-pole: Handle area only ● 3VA1 / 3VA2 molded case circuit breakers, 3-pole or 4-pole: Area around handle and trip unit ●...
Page 413 Accessories 4.13 Escutcheon ① Molded case circuit breaker ② Motor operator ③ Escutcheon ④ Cubicle door (closed) ⑤ Cubicle door (open) ⑥ Tolerance compensator Note To ensure that the control cabinet door can still be opened, a front-mounted accessory component must not project over the escutcheon by more than 5 mm when the door is closed.
Page 414: Labeling Plate
Accessories 4.13 Escutcheon 4.13.2 Labeling plate A supplementary labeling plate (3VA9087-0SX10) is available for the escutcheon. It can be latched in position in the center of any of the four sides of the escutcheon. Paper or plastic labels displaying plant-specific information are attached by adhesive to the labeling plate.
Page 415: Din Rail Adapter
Accessories 4.14 DIN rail adapter 4.14 DIN rail adapter 4.14.1 Introduction Description of application and basic function The DIN rail adapter is used to mount molded case circuit breakers on 35 mm DIN rails of meter or distribution cubicles, for example. DIN rail adapters are available exclusively for 3VA1 molded case circuit breakers in sizes 100 A and 160 A since, on the one hand, DIN rails are not designed to support heavy weights and, on the other, only molded case circuit breakers with thermal-magnetic trip units and rated operational currents up to maximum 160...
Page 416: Information About Installation, Assembly And Attachment
Accessories 4.14 DIN rail adapter 4.14.2 Information about installation, assembly and attachment 3VA1 160 1-pole and 2-pole molded case circuit breakers 3VA1 160 1-pole molded case circuit breakers To attach these to a DIN rail, a 3VA9181-0SH10 DIN rail adapter is required. This DIN rail adapter is not attached by screws to the molded case circuit breaker, but simply snapped into place on the rear panel.
Page 417 Accessories 4.14 DIN rail adapter Information about combination with other accessories DIN rail adapters are normally used to install molded case circuit breakers (possibly with side mounted residual current device) in distribution boards. The standard cover is then fitted over the circuit breakers. The front panel (45 mm high) is the only part of the device which protrudes through the cover.
Page 418 Accessories 4.14 DIN rail adapter 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 419: Service And Maintenance
Service and maintenance Notes Qualified personnel It is essential to refer to this documentation when setting up and operating the relevant equipment / system. The equipment / system may only be serviced and maintained by qualified personnel. For the purpose of the safety information in these operating instructions, a "qualified person"...
Page 420 Service and maintenance 5.2 Regular maintenance Inspection procedure recommended for 3VA molded case circuit breakers / switch disconnectors Optional inspection procedure for the ETU of the 3VA2 molded case circuit breaker 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 421: Maintenance Following Tripping Of A Molded Case Circuit Breaker
Service and maintenance 5.3 Maintenance following tripping of a molded case circuit breaker Maintenance following tripping of a molded case circuit breaker If a 3VA molded case circuit breaker trips on overcurrent (overload, short circuit) or residual current (ground fault or via residual current device), the cause of the trip must be identified and rectified before the molded case circuit breaker is switched on again.
Page 422: Fault Diagnostics
Service and maintenance 5.4 Fault diagnostics Fault diagnostics See also Technical Support (Page 12) 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 423: Technical Specifications
Technical specifications Circuit diagrams 6.1.1 3VA1 molded case circuit breakers 6.1.1.1 Basic units Switch disconnectors ① Fixed mounting, 3-pole and 4-pole ② Plug-in/draw-out units, 3-pole and 4-pole 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 424 Technical specifications 6.1 Circuit diagrams 3VA1 molded case circuit breakers with thermal-magnetic trip unit Fixed mounting and plug-in/draw-out units, 3-pole and 4-pole ① Fixed mounting, 3-pole and 4-pole ② Plug-in/draw-out units, 3-pole and 4-pole 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 425 Technical specifications 6.1 Circuit diagrams Fixed mounting and plug-in/draw-out units, 4-pole, unprotected N conductor ① Fixed mounting, 4-pole, unprotected N conductor ② Plug-in and draw-out units, 4-pole, unprotected N conductor 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 426: Accessories
Technical specifications 6.1 Circuit diagrams 6.1.1.2 Accessories Auxiliary switches, alarm switches and position signaling contacts ① Changeover contacts for auxiliary switches AUX, trip alarm switches TAS and electrical alarm switches EAS, position signaling switches for plug-in and draw-out units ② Leading changeover contacts for leading changeover switch LCS Auxiliary releases ①...
Page 427 Technical specifications 6.1 Circuit diagrams Motor operators Front mounted motor operator Motor operator actuation controlled via control cable OFF (to be provided by customer) ON (to be provided by customer) Fuse in the control circuit (to be provided by customer) Indicator light AUTO mode (to be provided by customer) Indicator light MAN mode (to be provided by customer) 3VA molded case circuit breakers...
Page 428 Technical specifications 6.1 Circuit diagrams Motor operator actuation controlled via control cable and undervoltage release OFF (to be provided by customer) ON (to be provided by customer) Remote command (to be provided by customer) Auxiliary contactor (to be provided by customer) U<...
Page 429 Technical specifications 6.1 Circuit diagrams Plug-in and draw-out units ① Plug-in units, 3-pole and 4-pole, with two optionally integrated position signaling switches for signaling "Plug-in unit - MCCB correctly bolted to plug-in socket". ② Draw-out units, 3-pole and 4-pole, with an optional switch for signaling the condition "Draw-out unit locked / open"...
Page 430 Technical specifications 6.1 Circuit diagrams RCD basic ① Side mounted RCD basic, 3-pole and 4-pole ② Loadside RCD basic, 3-pole and 4-pole 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 431: Example: 3Va1 Molded Case Circuit Breaker With Built-On/Built-In Accessories
Technical specifications 6.1 Circuit diagrams 6.1.1.3 Example: 3VA1 molded case circuit breaker with built-on/built-in accessories 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 432: 3Va2 Molded Case Circuit Breakers
Technical specifications 6.1 Circuit diagrams 6.1.2 3VA2 molded case circuit breakers 6.1.2.1 Basic units Fixed mounting and plug-in/draw-out units, 3-pole and 4-pole ① ② Fixed mounting, 3-pole and 4-pole Plug-in/draw-out units, 3-pole and 4-pole Voltage tap 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 433: Accessories
Technical specifications 6.1 Circuit diagrams Fixed mounting, 3-pole 3VA2 molded case circuit breaker in 5-wire system ① Optional external current transformer for N conductor (gray line) Voltage tap 6.1.2.2 Accessories Auxiliary switches, alarm switches and position signaling contacts ① Changeover contacts for auxiliary switches AUX, trip alarm switches TAS and electrical alarm switches EAS, position signaling switches for plug-in and draw-out units ②...
Page 434 Technical specifications 6.1 Circuit diagrams Auxiliary releases ① Undervoltage release UVR ② Undervoltage release with leading NO contacts UVR (LNO) ③ Universal release UNI ④ Shunt trip Other internal accessories ① COM060 communication module ② 24 V module 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 435 Technical specifications 6.1 Circuit diagrams Motor operators Front mounted motor operator Motor operator actuation controlled via control cable OFF (to be provided by customer) ON (to be provided by customer) Fuse in the control circuit (to be provided by customer) Indicator light AUTO mode (to be provided by customer) Indicator light MAN mode (to be provided by customer) 3VA molded case circuit breakers...
Page 436 Technical specifications 6.1 Circuit diagrams Motor operator actuation controlled via control cable and undervoltage release OFF (to be provided by customer) ON (to be provided by customer) Remote command (to be provided by customer) Auxiliary contactor (to be provided by customer) U<...
Page 437 Technical specifications 6.1 Circuit diagrams Plug-in and draw-out units Plug-in and draw-out units ① Plug-in units, 3-pole and 4-pole, with two optionally integrated position signaling switches for signaling "Plug-in unit - MCCB correctly bolted to plug-in socket". ② Draw-out units, 3-pole and 4-pole, with an optional switch for signaling the condition "Draw-out unit locked / open" and six optionally integrated position signaling switches for signaling "Position of breaker in the draw-out unit".
Page 438 Technical specifications 6.1 Circuit diagrams Draw-out units with communication interface Voltage tap Draw-out units, 3-pole and 4-pole, with an optional switch for signaling the condition "Draw- out unit locked / open" and three optionally integrated position signaling switches for signaling "Position of breaker in the draw-out unit". 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 439 Technical specifications 6.1 Circuit diagrams RCD advanced Loadside RCD, 3-pole and 4-pole Voltage tap 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 440 Technical specifications 6.1 Circuit diagrams Other external accessories T-Connector A connection can also be optionally equipped with a bus terminating resistor. The T-Connector is included in the scope of supply of the COM060 communication module. COM800 / COM100 breaker data server A connection can also be optionally equipped with a bus terminating resistor.
Page 441 Technical specifications 6.1 Circuit diagrams COM800 / COM100 breaker data server with expansion modules ① COM800 / COM100 breaker data server with 7KM PAC PROFIBUS DP expansion module ② COM800 / COM100 breaker data server with 7KM PAC Switched Ethernet PROFINET expansion module A connection can also be optionally equipped with a bus terminating resistor.
Page 442 Technical specifications 6.1 Circuit diagrams External current transformer for N conductor and illumination kit (24 V DC) for manual handle ① Connection for external current transformer for N conductor ② Illumination kit (24 V DC) for manual handle Voltage tap Time-delay device for undervoltage releases 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 443: Example: 3Va2 Molded Case Circuit Breaker With Built-On/Built-In Accessories
Technical specifications 6.1 Circuit diagrams 6.1.2.3 Example: 3VA2 molded case circuit breaker with built-on/built-in accessories A connection can also be optionally equipped with a bus terminating resistor. 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 444: Application Examples
Technical specifications 6.1 Circuit diagrams 6.1.3 Application examples 6.1.3.1 Main switch application with EMERGENCY-STOP function in accordance with Machinery Directive IEC/EN 60204-1 When the molded case circuit breaker is in the OFF or TRIP position, all outgoing control cables from the circuit breaker are de-energized. The contacts of the EMERGENCY-STOP pushbutton are therefore also de-energized whenever the molded case circuit breaker is switched off.
Page 445: Electrical Interlocking Of Two 3Va Molded Case Circuit Breakers With Undervoltage Releases
Technical specifications 6.1 Circuit diagrams 6.1.3.2 Electrical interlocking of two 3VA molded case circuit breakers with undervoltage releases Molded case circuit breaker 1 Undervoltage release in molded case circuit breaker 1 AUX 1 Auxiliary switch in molded case circuit breaker 1 Molded case circuit breaker 2 Undervoltage release in molded case circuit breaker 2 AUX 2 Auxiliary switch in molded case circuit breaker 2...
Page 446: Dimensional Drawings
Technical specifications 6.2 Dimensional drawings Dimensional drawings Note Hole drilling templates can be ordered via the Internet from the Siemens ComMaterials Platform (https://siemens- merchandising.ippag.com/nbc_requirelogin_sml.php?language=en). 6.2.1 Dimensions of basic units 6.2.1.1 3VA10 and 3VA11 3VA11 160 A 1-pole 3VA molded case circuit breakers...
Page 447 Technical specifications 6.2 Dimensional drawings 3VA11 160 A 2-pole 3VA10 100 A / 3VA11 160 A 3-pole 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 448 Technical specifications 6.2 Dimensional drawings 3VA10 100 A / 3VA11 160 A 4-pole 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 449: 3Va12
Technical specifications 6.2 Dimensional drawings 6.2.1.2 3VA12 3VA12 250 A 3-pole 3VA12 250 A 4-pole 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 450: 3Va20
Technical specifications 6.2 Dimensional drawings 6.2.1.3 3VA20 3VA20 100 A / 3VA21 160 A / 3VA22 250 A 3-pole 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 451 Technical specifications 6.2 Dimensional drawings 3VA20 100 A / 3VA21 160 A / 3VA22 250 A 4-pole 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 452: 3Va23
Technical specifications 6.2 Dimensional drawings 6.2.1.4 3VA23 3VA23 400 A / 3VA24 630 A 3-pole 3VA23 400 A / 3VA24 630 A 4-pole 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 453: Dimensions Of Accessories
Technical specifications 6.2 Dimensional drawings 6.2.2 Dimensions of accessories 6.2.2.1 Connection technology Rear busbar and cable lug connections for plug-in and draw-out molded case circuit breakers Rear terminal flat 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 454 Technical specifications 6.2 Dimensional drawings Rear connecting stud 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 455 Technical specifications 6.2 Dimensional drawings Phase barrier 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 456 Technical specifications 6.2 Dimensional drawings Terminal cover Extended terminal cover 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 457 Technical specifications 6.2 Dimensional drawings Broadened terminal cover 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 458 Technical specifications 6.2 Dimensional drawings Insulating plate Insulating plate 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 459 Technical specifications 6.2 Dimensional drawings Broadened insulating plate 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 460: Plug-In And Draw-Out Units
Technical specifications 6.2 Dimensional drawings 6.2.2.2 Plug-in and draw-out units Plug-in socket 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 461 Technical specifications 6.2 Dimensional drawings Draw-out unit 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 462 Technical specifications 6.2 Dimensional drawings Door feedthrough 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 463: Manual Operators
Technical specifications 6.2 Dimensional drawings 6.2.2.3 Manual operators Front mounted rotary operator 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 464 Technical specifications 6.2 Dimensional drawings Door mounted rotary operator Door mounted rotary operator 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 465 Technical specifications 6.2 Dimensional drawings Door mounted rotary operator with variable depth adapter (3VA9487 - 0GB10) 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 466 Technical specifications 6.2 Dimensional drawings Supplementary handle for door mounted rotary operator 3VA9.87 - 0GC... 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 467 Technical specifications 6.2 Dimensional drawings 3VA9.87 - 0GA80 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 468 Technical specifications 6.2 Dimensional drawings Side wall mounted rotary operator Side wall mounted rotary operator 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 469 Technical specifications 6.2 Dimensional drawings Side wall mounted rotary operator with mounting plate 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 470 Technical specifications 6.2 Dimensional drawings Rotary operator with shaft stub 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 471: Motor Operators
Technical specifications 6.2 Dimensional drawings 6.2.2.4 Motor operators MO320 motor operator 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 472: Locking And Interlocking
Technical specifications 6.2 Dimensional drawings 6.2.2.5 Locking and interlocking Padlock device for the handle Locking or interlocking with cylinder lock 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 473 Technical specifications 6.2 Dimensional drawings Sliding bar with Bowden cable Sliding bar 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 474 Technical specifications 6.2 Dimensional drawings Rear interlock Rear interlock 3VA9088 - 0VM10 / 3VA9088 - 0VM30 / MCCB 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 475 Technical specifications 6.2 Dimensional drawings 3VA9... - 0KP00 / 3VA9... - 0KD00 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 476 Technical specifications 6.2 Dimensional drawings Mounting plates and DIN rail 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 477 Technical specifications 6.2 Dimensional drawings Rear interlock for plug-in and draw-out units 3VA9088 - 0VM30 3VA9... - 0KP00 / 3VA9... - 0KD00 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 478: Residual Current Devices
Technical specifications 6.2 Dimensional drawings 6.2.2.6 Residual current devices Side-mounted residual current devices Basic RCD310 and Basic RCD510 With 3-pole 3VA1 molded case circuit breaker size 160 A 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 479 Technical specifications 6.2 Dimensional drawings With 4-pole 3VA1 molded case circuit breaker size 160 A With 3-pole 3VA1 molded case circuit breaker size 250 A (Basic RCD510 only) 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 480 Technical specifications 6.2 Dimensional drawings With 4-pole 3VA1 molded case circuit breaker size 250 A (Basic RCD510 only) Loadside residual current devices Basic RCD320 and Basic RCD520 With 3VA1 molded case circuit breaker size 160 A 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 481 Technical specifications 6.2 Dimensional drawings With 3VA1 molded case circuit breaker size 250 A (Basic RCD520 only) 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 482 Technical specifications 6.2 Dimensional drawings Loadside residual current device Advanced RCD820 With 3VA2 molded case circuit breaker sizes 100 A to 250 A 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 483: Communication And System Integration
Technical specifications 6.2 Dimensional drawings With 3VA2 molded case circuit breaker sizes 400 A to 630 A 6.2.2.7 Communication and system integration COM800 and COM100 breaker data server 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 484: Efb300 External Function Box
Technical specifications 6.2 Dimensional drawings DSP800 display 6.2.2.8 EFB300 external function box 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 485: Test Devices
Technical specifications 6.2 Dimensional drawings 6.2.2.9 Test devices TD300 activation and trip box Refer to chapter Technical specifications of TD300 (Page 397). TD500 test device Refer to chapter Technical specifications (Page 409). 6.2.2.10 External current transformer for N conductor 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 486: Escutcheon
Technical specifications 6.2 Dimensional drawings 6.2.2.11 Escutcheon 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 487: Power Losses
Technical specifications 6.3 Power losses Power losses 6.3.1 Power losses of 3VA1 molded case circuit breakers Note The specified power loss applies to 3-pole and 4-pole devices in the case of 3-phase, symmetrical loading. 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 488: Power Losses Of 3Va2 Molded Case Circuit Breakers
Technical specifications 6.3 Power losses 6.3.2 Power losses of 3VA2 molded case circuit breakers Note The specified power loss applies to 3-pole and 4-pole devices in the case of 3-phase, symmetrical loading. 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 489: Derating And Temperature Compensation
Technical specifications 6.4 Derating and temperature compensation Derating and temperature compensation 6.4.1 Derating of 3VA1 molded case circuit breakers The temperature inside the molded case circuit breaker is influenced by the ambient temperature and the current-dependent power loss generated inside the unit. To prevent overloading of 3VA1 molded case circuit breakers under difficult thermal conditions, the maximum rated continuous operational current must be limited as a function of the ambient temperature.
Page 490 Technical specifications 6.4 Derating and temperature compensation Derating in combination with accessories None of the accessories from the extensive range available for 3VA1 molded case circuit breakers has an influence on the thermal response thresholds of the switching devices except for two accessories that require additional correction factors. These are: No derating up to the rated operational current I of the molded case circuit breaker No derating up to the rated operational current I...
Page 491: Temperature Compensation With Thermal-Magnetic Trip Units Of The Tm 2-Series
Technical specifications 6.4 Derating and temperature compensation No derating up to the rated operational current I of the molded case circuit breaker 6.4.2 Temperature compensation with thermal-magnetic trip units of the TM 2-series The trip units for 3VA1 molded case circuit breakers are factory-calibrated to a temperature of 50 °C.
Page 492 Technical specifications 6.4 Derating and temperature compensation Using the setting factor calculated at 50 °C, it is possible to read the correction factor K off the following charts: No derating up to the rated operational current I of the molded case circuit breaker Using the two calculated values, it is possible to determine the temperature compensation TK and finally the setting value for the trip unit I r(TU)
Page 493 Example 1: Correction of setting values as a function of ambient temperature Starting point: On a 3VA1 100 A molded case circuit breaker with a TM240 100 A trip unit, the real tripping threshold for various different service temperatures must be set to a required system current of I = 90 A.
Page 494 Technical specifications 6.4 Derating and temperature compensation Example 2: Calculation of the tripping time Starting point: Based on the example above, the tripping time for an overcurrent I = 360 A will now be calculated. To compensate for the ambient temperature of 60 °C, rather than 50 °C, the thermal trip unit has been set I = 95 A for a system current I = 90 A.
Page 495 Technical specifications 6.4 Derating and temperature compensation Inclusion of accessories None of the accessories from the extensive range available for 3VA1 molded case circuit breakers has an influence on the thermal response thresholds of the switching devices except for two accessories that require additional correction factors. These are: ●...
Page 496: Use Of Terminals With Auxiliary Conductor Connection
Technical specifications 6.4 Derating and temperature compensation Note These values do not apply to all mounting conditions for molded case circuit breakers and may deviate depending upon factors such as cables and busbars, packing density, ventilation, etc. Please observe the applicable overriding guidelines (e.g. IEC 61439). 6.4.3 Use of terminals with auxiliary conductor connection When terminals with auxiliary conductor connection are used, the total current from the main...
Page 497 Technical specifications 6.4 Derating and temperature compensation In addition, a correction factor for setting the magnetic trip unit as a function of frequency must be applied. Example Starting point: A 3VA1 molded case circuit breaker 100 A with a TM240 trip unit is used for a 400 Hz application.
Page 498: Correction Factors With Direct Current For The Thermal-Magnetic Trip Units Of 3Va1 Molded Case Circuit Breakers
Technical specifications 6.4 Derating and temperature compensation 6.4.5 Correction factors with direct current for the thermal-magnetic trip units of 3VA1 molded case circuit breakers With DC systems, a correction factor must be applied to the magnetic trip unit. Where ambient temperatures differ from the calibration temperature, temperature compensation as described in chapter Derating of 3VA1 molded case circuit breakers (Page 489) must be performed.
Page 499: Derating For The 3Va1 Switch Disconnector
Technical specifications 6.4 Derating and temperature compensation 6.4.6 Derating for the 3VA1 switch disconnector The 3VA1 SD switch disconnectors do not have a trip unit. The temperature inside the switch disconnector is however influenced by the ambient temperature and the current-dependent power loss generated inside the unit.
Page 500 Technical specifications 6.4 Derating and temperature compensation Limitation of the rated continuous operational current in combination with accessories The table below shows the maximum rated continuous operational current for the plug-in version of switch disconnectors in sizes 160 A and 250 A and for switch disconnectors combined with residual current devices: No derating up to the rated operational current I of the molded case circuit breaker...
Page 501: Derating For The Electronic Trip Units Of 3Va2 Molded Case Circuit Breakers
Technical specifications 6.4 Derating and temperature compensation 6.4.7 Derating for the electronic trip units of 3VA2 molded case circuit breakers The current measuring circuits of the electronic trip units of 3VA2 molded case circuit breakers are not affected by the ambient temperature. The Rogowski coils integrated in the trip unit measure the current and compare it to the set tripping threshold.
Page 502 Technical specifications 6.4 Derating and temperature compensation COM060 COM060 communication module No derating up to the rated operational current I of the molded case circuit breaker 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 503 Technical specifications 6.4 Derating and temperature compensation Note These values do not apply to all mounting conditions for molded case circuit breakers and may deviate depending upon factors such as cables and busbars, packing density, ventilation, etc. Please observe the applicable overriding guidelines (e.g. IEC 61439). When terminals with auxiliary conductor connection are used, the total current from the main circuit and auxiliary conductor must not exceed the maximum rated operational current of the molded case circuit breaker.
Page 504 Technical specifications 6.4 Derating and temperature compensation 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 505: Appendix
Appendix Standards and approvals Description Table A- 1 Series 3VA1 and 3VA2 molded case circuit breakers conform to the following interna- tional standards Standard Title CISPR11 Class A Limits and methods of measurement of radio interference suppression of equipment in industrial environments. Class B Limits and methods of measurement of radio interference suppression of equipment in domestic environments.
Page 506 3VA molded case circuit breakers conform to the following national standards Please go to (http://www.siemens.com/3VA-Documentation) for a list of national standards to which 3VA molded case circuit breakers conform. Certification by marine classification societies Please go to (http://www.siemens.com/3VA-Documentation) for a list of marine classification...
Page 507: Esd Guidelines
ESD guidelines Electrostatic sensitive devices (ESD) ESD components are destroyed by voltage and energy far below the limits of human perception. Voltages of this kind occur as soon as a device or an assembly is touched by a person who is not electrostatically discharged. ESD components which have been subject to such voltage are usually not recognized immediately as being defective, because the malfunction does not occur until after a longer period of operation.
Page 508 ESD guidelines B.1 Electrostatic sensitive devices (ESD) The diagrams below illustrate the required ESD protective measures for electrostatic sensitive devices. ESD seat ESD standing position ESD seat and ESD standing position Protective measures Conductive floor ESD table ESD footwear ESD smock ESD bracelet Cubicle ground connection Figure B-1...
Page 509: List Of Abbreviations
List of abbreviations Table of abbreviations Summary Table C- 1 Meaning of abbreviations used in this document Abbreviation Meaning AC voltage ACTIVE (ready signal) ALARM (pre-alarm) ASCII American Standard Code for Information Interchange [Modbus interface] ATAM Adjustable Thermal Adjustable Magnetic Trip Unit (adjustable thermal over- load trip unit, adjustable magnetic trip unit with short-circuit protection) ATFM Adjustable Thermal Fixed Magnetic Trip Unit (adjustable thermal overload trip...
Page 510 List of abbreviations C.1 Table of abbreviations Abbreviation Meaning Instantaneous (short-circuit protection) Isolated I- / O- Input / Output International Electrotechnical Commission INST [tripping char- INST [tripping characteristic] acteristic] INSTA Final distribution area International Protection Injection Tester Isolated ground, French: "Isolé Terre" Long-time delay (overload protection) Overload protection Load Break Switch (switch disconnector)
Page 511 List of abbreviations C.1 Table of abbreviations Abbreviation Meaning Root Mean Square RS [interface] Formerly: Radio Selector; now usually: Recommended Standard Remote Terminal Unit [Modbus interface] Short circuit alarm switch Programmable logic controller Shunt trip Shunt trip flexible Shunt trip left Test T [IT systems] French: Terre (ground)
Page 512 List of abbreviations C.1 Table of abbreviations Table C- 2 Meaning of symbols and abbreviations Sym- Meaning bol/abbreviation Δt Delay time Residual current; rated residual current; response current Δn Inrush current " Initial balanced short-circuit current Let-through energy Take-over current Pickup value blocking protection Making capacity;...
Page 513 List of abbreviations C.1 Table of abbreviations Sym- Meaning bol/abbreviation Delay time associated with the adjustable response current; trip time associated with ground-fault current setting value "Virtual" trip time of I protection; highest trip time associated with rated tripping current of instantaneous trip Trip time;...
Page 514 List of abbreviations C.1 Table of abbreviations 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 515: Conversion Tables
Conversion tables The U.S. units can be converted to the corresponding European/metric units using the conversion tables listed. Note No liability assumed for completeness or accuracy No liability can be assumed for the completeness or accuracy of the values listed in this section of the manual.
Page 516 Conversion tables kcmil ↔ mm conversion table AWG / kcmil Diameter d/mm 14.6 17.3 18.49 20.65 22.68 26.16 kcmil 1000 29.26 1500 35.86 2000 41.45 1010 1) Diameter over Round Concentric-Lay-Stranded Conductors for Classes B, C and D Source: Standard UL83 Other conversions Conversion factors for units of length Length...
Page 517 Conversion tables Conversion for units of temperature Temperature 100 degrees Centigrade (°C) 212 degrees Fahrenheit (°C) 80 °C 176 °F 60 °C 140 °F 40 °C 104 °F 20 °C 68 °F 0 °C 32 °F - 5 °C 23 °F - 10 °C 14 °F - 15 °C...
Page 518 Conversion tables 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...
Page 519: Glossary
Glossary AUTO Method of remote operation of the motor operators via control cables, e.g. PLC. Breaking capacity The breaking capacity is the rms value of the current at a specific cos φ (power factor) and a specific voltage which can be safely interrupted by a switching device or fuse under prescribed conditions.
Page 520 Glossary Making capacity The making capacity is the value of the prospective making current which the switching device can safely conduct at the instant of closing under prescribed conditions for a specific circuit. For molded case circuit breakers, the making capacity is expressed as the maximum possible instantaneous value of the potential prospective current at the input terminals for the specified voltage.
Page 521 Glossary Rated peak withstand current, impulse short-circuit current Maximum permissible instantaneous (peak) value of the prospective short-circuit current in the current path under the highest load. It characterizes the dynamic short-circuit strength of a switching device. Rated residual current The rated residual current is the fault (residual) current for which residual current- Δn operated circuit breakers are designed.
Page 522 Glossary Rated short-circuit making capacity The rated short-circuit making capacity of a molded case circuit breaker is the maximum current that the circuit breaker can safely interrupt at a specific rated operational voltage and rated frequency. Unlike other characteristic data, this is specified as a peak value. With AC molded case circuit breakers, the rated short-circuit making capacity must be at least equal to the rated short-circuit breaking capacity multiplied by a factor n.
Page 523 Glossary Rated uninterrupted current The rated uninterrupted current of a switching device, e.g. a molded case circuit breaker, is a current that the device can conduct in uninterrupted operation (for weeks, months or years). This current is specified by the manufacturer. Rating The rating is the power that a switching device is capable of switching at the associated rated operational voltage in accordance with the utilization category, e.g.
Page 524 Glossary Tripping current, overload When this uninterrupted current limit is exceeded within a predefined time period, the circuit breaker trips (inverse-time delayed tripping!). Tripping current, short-time delayed When this current limit is exceeded, the circuit breaker trips after a predefined time delay. Tripping time Period of time from the instant of commencement of trip command output to the moment at which the command becomes irrevocable (timing concept for the tripping of circuit breakers).
Page 525: Index
Index Applications, 16 Arcing space, 64 AUTO, 262 Automation technology, 366 3VA1, 18 Autotrip plunger, 211, 219 Switch disconnector, 126 Auxiliary circuit connector, 231 3VA2, 19 Auxiliary conductor terminal, 199 3VA-line, 369 Auxiliary contact, 328, 341 Auxiliary release, 158 Auxiliary switch, 150, 156 AUX, 151 400 Hz system, 136 Leading changeover switch LCS, 151...
Page 526 Index Characteristic curve, 72 Current transformer for N conductor, 410 Cylinder lock, 273, 277 Circuit breaker identification, 44 Circuit breaker labels, 44 Circuit Breaker Switch, 344 Circular conductor terminal, 175 2 cables, 178 DC insulating plate, 196 6 cables, 179 Delay time (RCD), 308, 326, 339 Auxiliary conductor terminal, 199 Derating, 60, 106...
Page 527 Index Complete kit, 217 Conversion kit, 218 Fire protection, 293 Defined position, 216 Flat terminal, 190 Installation overview, 205 Floor mounting, 62 Position signaling switch, 225 Free tripping, 50 Rear interlock, 292 Front mounted rotary operator Residual current device, 299 Door interlock, 242 Sliding clutch, 216 Interlocking, 254...
Page 528 Index Releasing a different molded case circuit Mounting position, 62 MRCD, 298, 355 breaker, 281 Side wall mounted rotary operator, 254, 256 Sliding bar, 282, 285 Interlocking module, 288, 292 Interlocking rod, 288 Neutral conductor Isolating features, 127 Protection, 78 IT system, 138 Neutral conductor protection, 78 Insulating equipment, 196...
Page 529 Locking, 252, 253 Auxiliary release, 158 Mounting plate, 250 RCR, 317 Terminal plate, 250 Shunt trip, 159 Siemens ComMaterial Platform, 446 Undervoltage release, 159 Signaling of position, 222 Universal release, 161 Signaling switch Remote test button:, 343 Position signaling switch, 225...
Page 530 Index Switching position indicator, 215, 242 TIP (Totally Integrated Power), 362 TMTU, 70, 84 Motor operator, 261 Switching positions of molded case circuit breaker, 50 400 Hz system, 136 Line protection, 106 Parameter, 107, 108, 109 Trip unit type, 85 Tolerance compensator, 246 T slot, 331, 347 Escutcheon, 412...
Page 531 Index 3VA molded case circuit breakers Manual, 04/2015, A5E03603177010-02...

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Siemens 3VA1 100 A Manual

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