Vcb Circuit Breaker. Vcb refers to a vacuum circuit breaker. Vacuum offers the highest insulating strength.
The operation of switching on and closing of current carrying contacts and interrelated arc interruption takes place in a vacuum chamber in the breaker which is called a vacuum interrupter. In vacuum circuit breakers the vacuum is used as the arc quenching medium. A vacuum circuit breaker is such kind of circuit breaker where the arc quenching takes place in vacuum.
So it has far superior arc quenching properties than any other medium oil in oil cb sf6 in sf6 circuit breaker.
In vacuum circuit breakers the vacuum is used as the arc quenching medium. The technology is suitable for mainly medium voltage application. Vacuum offers the highest insulating strength. In vacuum circuit breakers the vacuum is used as the arc quenching medium.
