VCB has various meanings in the Voltage category. Discover the full forms, definitions, and usage contexts of VCB in Voltage.
Circuit breakers, normally applied at medium voltages, that use vacuum interrupters to extinguish the electrical arc and shutoff flowing current. A vacuum circuit breaker utilizes a vacuum to extinguish arcing when the circuit breaker is opened and to act as a dielectric to insulate the contacts after the arc is interrupted.
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