ABB magnetic ac contactors are made by ABB company. 1. ApplicationABB magnetic ac contactor are originated from ABB company, now we develop it successfully in the past three years according to IEC60947-2. It is suitable for using in the circuits up to rated voltage of 690VAC, 50Hz or 60Hz, rated current up to 750A, for making, breaking, frequently starting & controlling AC motor. Combined with ...