CIX1 series AC contactor (hereinafter referred to as the contactor) is mainly used in the circuits with the frequency of AC 50Hz (or 60Hz). the rated working voltage of up to 660V and the rated working current of up to 400A when the rated working voltage is 380V under the use category of AC-3 for connecting and breaking circuits remotely, and working with the JRS2(3UA5) thermal relay of the corresponding model to form the electromagnetic starter to protect circuits that may be overloaded.