Testing a Circuit Breaker With Direct Rotary Handle

Push-to-Trip Procedure

CAUTION
HAZARD OF NUISANCE TRIPPING Device tests must only be done by qualified electrical personnel. Failure to follow these instructions can result in injury or equipment damage.

When testing the trip mechanism, take precautions against:

Disrupting operations
Activating inappropriate alarms
Triggering unwanted actions

For example, tripping the circuit breaker with the push-to-trip button can lead to inappropriate fault indications or corrective actions (such as switching to an alternate power source).

Follow these steps to test the trip mechanism:

Step		Position
1	Close the circuit breaker.	I (ON)
2	Press the push-to-trip button: the circuit breaker trips.	Trip
3	Reset the circuit breaker by turning the rotary handle counterclockwise from the Trip position to O (OFF).	O (OFF)
4	Close the circuit breaker by turning the rotary handle clockwise to I (ON).	I (ON)