Accessories
4.8 Residual current devices
3VA molded case circuit breakers with IEC certificate
406
Manual, 03/2019, A5E03603177010-03
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.
The RCR functions as a shunt trip, allowing the circuit breaker to be tripped by remote
control. External tripping of the molded case circuit breaker or switch disconnector via the
RCR does not affect the residual current device. In other words, neither the "tripped" display
on the residual current device nor the auxiliary contacts for the "tripped" signal are activated
in the event of an external trip.
It is not possible, however, to connect the contacts named above of several residual current
devices in parallel.
