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What are possible causes for the ATS48 soft start to trip the breaker.

Issue:
ATS48 tripping the breaker.

Product Line:
ATS48, Altistart 48

Environment:
All models and serial numbers

Cause:
Possible causes:
1.  The load is excessive
2.   Shorted SCR
3.  Shorting contactor is welded in the closed position

Resolution:
If excessive load, may need to upsize the motor and soft start.  Try increasing the acceleration time.  Decrease the load.
If shorted SCR, repair or replace.
If shorting contactor is welded, replace the shorting contactor.
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