UNDERVOLTAGE TRIP ABN/ABS/ABH 53C S/D 203C

Specification of

Under Voltage Relay ( The Undervoltage Trip) relase automatically opens a circuit breaker when voltage drops to a value ranging between 20% to 70% of the line voltage.

The operation is instantaneous, and after tripping, the circuit breaker cannot be re-closed again until the voltage returns to 85% of line voltage.