Vacuum circuit breakers use vacuum as the arc extinguishing and insulating medium. The parts are sealed in a shell made of insulating glass and other materials, and the sealing of the movable contact rod and the movable contact is realized by a metal bellows.
The empty circuit breaker has the following characteristics:
At present, vacuum circuit breakers have been more and more widely used, especially 10 kV circuit breakers are used more and more vacuum circuit breakers. But pay special attention to the quality of the vacuum circuit breaker when selecting.