Choosing The Right Residual Current Protective Device - Siemens SENTRON Instructions Manual
Residual current protective devices
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Also See for SENTRON:
- Manual (224 pages) ,
- Configuration manual (80 pages) ,
- Product manual (46 pages)
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Notes on installation and use
5.2
Choosing the right residual current protective device
Figure 15 can help users to select a suitable residual current protective device.
RCCB
RCBO
AC
A
Version
K
S
SIGRES 500 V 50-400 Hz
Number of poles
1+N
2
Rated residual current I
-> Protection objective
Additional
Fault
protection
protection
I
≤ 30mA
I
Δn
Δn
Rated current I
Only with RCBO,
MCB characteristic
B
Figure 15: Selection aid for fi nding the suitable residual current protective device
42
Design
RC unit
Type
F
B
B+
3
3+N
4
Δn
Fire
protection
≤ 30mA
I
≤ 300mA
Δn
n
C
D
Selection criterion
Equipment, circuit as
per table 1
Network, equipment,
ambient conditions
Equipment
Installation regulations
VDE 0100-410, VDE 0100-530
VDE 0100-7xx, VDE 0100-482
VDS 3501
Equipment
Disconnection condition in
accordance with VDE 0100-410
(see table 4) Equipment
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