A Vacuum Circuit Breaker, or VCB for short, is a specialized type of circuit breaker that utilizes a vacuum as the arc quenching medium. This unique design allows it to offer superior arc quenching properties compared to other types of circuit breakers, such as those using oil or SF6 gas. The principle behind the functioning of a VCB involves the production and quick extinguishing of an arc when the contacts of the breaker are opened in the vacuum. As the contacts separate, an arc is formed due to the ionization of metal vapors. However, the arc is rapidly extinguished as […]