What are possible causes for the ATS48 soft start to trip the breaker.
ATS48 tripping the breaker.
ATS48, Altistart 48
All models and serial numbers
1. The load is excessive
2. Shorted SCR
3. Shorting contactor is welded in the closed position
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.