Trip Indicator Lights

A trip indicator light on the trip unit will light when the circuit breaker trips. If the trip unit has auxiliary power connected, the trip unit will display information about the trip.

The trip indicator light will remain lit until it is reset by pressing the reset button (A). Cause of trip should be corrected before resetting.

Ir trip indicator light (B) lights when long-time pickup (Ir) signals the circuit breaker to trip.

Isd/Ii trip indicator light (C) lights when short-time pickup (Isd) or instantaneous pickup (Ii) signals the circuit breaker to trip.

Ig trip indicator light (D) lights when ground-fault pickup (Ig) signals the circuit breaker to trip.

Ap self-protection/advanced-protection indicator light (E) lights when the advanced protection features cause a trip to occur, the trip unit overheats, the instantaneous override value is exceeded or a trip unit power supply failure occurs.

NOTICE
Hazard of equipment damage If the circuit breaker remains closed and the Ap light remains lit after the reset, open the circuit breaker and contact the sales office. Failure to follow these instructions can result in equipment damage.

NOTE: In cases where a number of causes may result in tripping, the LED signalling the last cause is the only one to remain on.