This is the internal self-test function of the trip unit functions. Test can be done with or without tripping the circuit breaker.

To test without tripping, press “TEST.”

To test with tripping:

1. Press both the “TEST” and “CLEAR” buttons at the same time and hold for at least 10 seconds
2. Release both at the same time

For more information about testing WL circuit breakers, check out Chapter 9 of the WL Operator’s Manuals.

The latest versions of the WL Operator's Manuals can be found at: 

UL 1066 WL Circuit Breakers:  Click here

UL 489 WL Circuit Breakers:  Click here