
This auxiliary alarm contact has two groups of transfer contacts. It provides remote indication of the MCB's status.

This MCB undervoltage release trips the circuit breaker when the actual voltage is between 70%Ue-35%Ue. It prevents the circuit breaker from closing when the actual voltage is below 35%Ue.

This MCB shunt trip release allows for remote disconnection of a circuit. When the applied current voltage is from 70% Us to 110% Us, the shunt release will reliably break the circuit.