CJX2-004 series AC contactor, with two open and two close main contacts or four open main contacts, can be widely used in AC 50Hz or 60Hz, rated insulation voltage of 660V, in the AC-3 use category, rated working voltage of 380V, rated working current of 9A~95A three-phase four-wire circuit. Make and break the three-phase main circuit and neutral line, and frequently start and control AC motor and line conversion. And can be combined with overload relay to form a starter to protect the possible overload circuit.