Answer / guest

VACCUM CIRCUIT BREAKER

Answer / nadarajan v

vcb means vaccum circuit breaker used in ehv power station.

A circuit breaker in which a pair of contacts is
hermetically sealed in a vacuum envelope; the contacts are
separated by using a bellows to move one of them; an arc is
produced by metallic vapor boiled from the electrodes, and
is extinguished when the vapor particles condense on solid
surfaces.

Answer / meenakshi

vacuum circuit breakers. these are the circuit breakers
which are used to protect medium and high voltage circuits
from dangerous electrical situations.

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