what is difference between ac1 and ac3 contactor and why it is needed to be se

what is difference between ac1 and ac3 contactor and why it
is needed to be selected?

Question Posted / ramesh.rjpm

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what is difference between ac1 and ac3 contactor and why it is needed to be selected?..

Answer / rabi

Ac-1 contactor is used for "Non-inductive or slightly
inductive loads, resistance furnaces".

Ac-3-contactor is used "Squirrel-cage motors: starting,
switching off motors during run-ning."

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