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Motor overload

MrJack96
What would make an motor overload trip before a breaker when a motor is to earth?
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  • Former Community Member
    0 Former Community Member
    Lack of coordination of the devices


    Normally the OL isn't fault rated so the protective circuit breaker should open first to safely break the fault current. Opening high fault levels on a typical OL will usually destroy them (and the starter)


    Regards


    OMS
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  • Former Community Member
    0 Former Community Member
    Lack of coordination of the devices


    Normally the OL isn't fault rated so the protective circuit breaker should open first to safely break the fault current. Opening high fault levels on a typical OL will usually destroy them (and the starter)


    Regards


    OMS
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