Electric motor protector

The utility model provides an electric motor protector, comprising a state indicating circuit, a temperature sample circuit, an alternating current contactor on a motor control circuit. The temperature sample circuit comprises a plurality of temperature sensors and is connected in series with the coil curl of the alternating current contactor to control the switching of the main circuit of an electric motor. The state indicating circuit indicates the operating state of the electric motor. The temperature signals of the utility model are from the electric motor protector, and the back feed of the temperature signals is timely, accurate, and reliable. The utility model has the advantages of simple and rational structure, extensive protection range, low cost, and convenient installation and operation; the electric motor protector has the protect functions of phase interruption, over pressure, over load, etc.; the electric motor protector is suitable for the electric motors of various specifications.