1.auxiliary contact block 2.time delay contact block 3.latch add-on block APPLICATION: GMC AC Contactor GMC(LS) series AC contactor is suitable for using in the circuits up to the rated voltage 660VAC 50Hz or 60Hz, rated current 9A to 125A, making and breaking and frequent starting, controls the AC motor. Combined with the auxiliary contact group, air delayer, machine interlocking device etc, it ...