Opening, Closing, Resetting, and Testing the Circuit Breaker
Opening and Closing with the Side Rotary Handle
Resetting with a Side Rotary Handle After a Trip
Testing the Trip Mechanism
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HAZARD OF NUISANCE TRIPPING
Circuit breaker tests must only be done by qualified electrical
personnel.
Failure to follow these instructions can result in injury or equipment damage.
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When testing the trip mechanism take precautions against:
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Disrupting operations
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Activating inappropriate alarms
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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).
There is no push-to-trip button on the door of a circuit breaker with a side rotary handle. To check the trip mechanism, the door must first be opened.
Follow these steps to test the trip mechanism.