This series of AC Contactor is designed for long-distance making and breaking in circuit, frequently starting and controlling AC motor in the power system with frequency 50/60Hz, rated insulation voltage up to 690V, and rated operating voltage to 380v . It can be assembled with thermal relay or electrical protection apparatus, as electron magnetic starter, to protect circuit against overload or phase breaking. It can also be used in the circuit with rated operating voltage of 660v when lowering adequate current. The product conform to IEC 60947-4-1 standard