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Why will a QO breaker trip to the center position on the breaker when it is tapped sharply on the bottom? Is this the correct way to test the tripping function of the breaker?

This test is a crude way to try the functionality of the breaker trip mechanism only, and to verify that the unit will actually go into the trip position. It does not verify proper calibration or circuit protection, and does not test complete breaker functionality.


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