Fault Status; Connection With The Shunt Trip When The Current Is Activated - ABB RD3M Manual

Fault status

When the level of residual current, detected by the toroid, is higher than
I∆n threshold, the RD3 relay causes the automatic opening of the circuit
breaker to which it is connected by means of the shunt trip.

Connection with the shunt trip when the current is activated:

POWER SUPPLY
RD3M: 230-400 VAC
RD3M-48: 12-48 VAC/DC
1
7
BB_76x88mm_Rd3M_rev4.indd 22
Remote Reset
2 3 4 5 6
8 9 10 11 12
TR...
Shunt
trip
L1
The residual current protection
is not active when this circuit
breaker is switch-off
22
L O A D PE
MCB
L2 L3 N
19/09/11 11:02
PO
RD
RD3M
1
7