This is MK1 model DOL starter available upto 7.5HP or 22A relay, relay range starting from 0.6A Coil operated type.
what is dol starter
DOL starter a dol starter is Direct On Line starter or across the line starter is a method of starting of a 3 phase induction motor in dol starter an induction motor is connected directly across its 3 phase supply and the dol starter applies the full line voltage to the motor terminals.

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