CJ40 3P magnetic motor starter ac contactor is mainly used for AC 50Hz (or 60Hz), rated voltage to 660V (or 1140V, rated current of 1000A connected to power lines and breaking the circuit, and can with the appropriate thermal relay or electronic protection device combined into electromagnetic starter in order to protect the circuit overload that may occur. Products comply with GB14048.4, IEC 60947-4-1, and GB21518-2008 "AC contactor limit value of energy efficiency rating and energy efficiency rating.