GMC series AC Contators is suitable for using in the circuits up to the rated voltage 660V AC50 Hz or 60Hz, rated current up to 125A, 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 conbined into the electromagnetic starter. The contactor is produced according to IEC947-2, VDE0660&BS5452.