LC1-D series AC Contactor is suitable for using in the circuits up to the rated voltage 660VAC 50Hz or 60Hz, rated current up to 150A, for making, breaking, frequently starting & controlling the AC motor. Combined with the auxiliary contact block, timer delay & machine-interlocking device etc, it becomes the delay contactor, mechanical interlocking contactor, star-delta starter.With the thermal relay, it is combined into the electromagnetic starter. The product conforms to IEC60947-4-1 standard.