This is a ABB B50 brand contactor,it is written Ith=125A ,
IeAC-1=100A & not mentioned continuous current ,
I don't understand what do they mean & which one is the exact current that it can handles?
Thanks!!!
The current that the contactor can handle depends on how often the contactor is interupting the current, what current surges are expected when turning on and what voltage surges are expected when turning off.
The Ith = 125 A means that the thermal limit on the contactor is 125 A continuous without overheating. The resistance is such that the power from the heating with 125 A can be dissapated without any part getting too hot.
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explain that Ie means:-
Rated operational current of an apparatus taking into account voltage, frequency, duty and utilization category.