Siemens SENTRON - Choosing the Right Residual Current Protective Device

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5.2
Choosing the right residual current protective device
Figure 15 can help users to select a suitable residual current protective device.
Notes on installation and use
Figure 15: Selection aid for  nding the suitable residual current protective device
Rated current I
n
Version
K S
SIGRES 500 V 50-400 Hz
Type
AC A F B B+
Number of poles
1+N 2 3 3+N 4
Design
RCCB RCBO RC unit
Rated residual current I
Δn
-> Protection objective
Additional
protection
I
Δn
≤ 30mA
Fault
protection
I
Δn
≤ 30mA
Fire
protection
I
Δn
≤ 300mA
Only with RCBO,
MCB characteristic
B 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