1. GMC electrical magnetic ac contactor is suitable for using in the circuits up to the rated voltage 660V AC 50HZ or 60HZ, rated current up to 95A, for making frequently starting & controlling the AC motor. 2. 09-220A GMC AC Contactor can be Combined with the auxiliary contact block, thermal relay & machine-interlocking device etc, it becomes the delay contactor, mechanical interlocking contactor, star-delta starter. 3. With the thermal relay, it is combined into the electromagnetic starter.