Circuit breakers can be used to distribute power, infrequently start asynchronous motors, and protect power lines and motors Fast closing to ensure reliable operation of the load and prolong the life of electrical circuit breakers Small size and light weight, it has reliable performance, higher breaking capacity The shell and parts are made of high flame retardant and shock resistant plastics, and have a long service life It can be used for distribution line protection and infrequent load conversion. It can also be used as isolator