MN Undervoltage Release

- Jul 01, 2018 -

The MN undervoltage release instantaneously opens the circuit breakers when its supply voltage drops a value between 35% and 70% of its rated voltage. If there is no supply on the release, it is impossible to close the circuit breaker, either manually or electrically.

Any attempt to close the circuit breaker has no effect on the main contacts, circuit breaker closing is enabled again when the supply voltage of the release returns to 85% of its rated voltage.

Characteristics of MN Undervolage Release