MULTIFUNCTION PROTECTIVE DEVICE FOR LECTRICAL MACHINERY

The utility model relates to a multifunction protection device for a motor, belonging to the technical field of motor protection. The utility model is characterized in that the utility model is composed of a contact-tip breaking mechanism, a phase-interruption signal inductor Y-triangle shift binding post and an electronic controller; the utility model can replace the motor binding box; the utility model has the protection functions of electric leakage, phase interruption, and overload, and the function of the motor binding box. The motor provided with the protection device becomes a safe motor with self-protection function. The utility model not only can design and manufacture a novel multifunction motor protection device, but also can carry out construction to form the multifunction protection device according to design principles of existing air switches, breakers, etc.