This series of AC contactor is mainly used in the electric power systems with the frequency of AC 50Hz, the rated working voltage of up to 690v.and the rated working current of up to 150A under 380V and of up to 100A under 690V under the use category of AC-3 for remotely connecting and breaking circuits and frequently starting and controlling AC motors.It can work with the appropriate thermal overload relay or electronic protection device to form the electromagnetic starter to protect the circuits that may be overloaded.Executive standards:GB/T14048.4-2020 and 1EC60947-4-1.etc.