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Vacuum Circuit Breakers
Vacuum circuit breakers provide protection for power supplies with up to 35,000 volts. A vacuum circuit breaker is a circuit breaker in which a pair of contacts is sealed in a vacuum envelope. The contacts are separated by using a bellows to move one of them. An arc is then produced by metallic vapor boiled from the electrodes, and is extinguished when the vapor particles condense on solid surfaces.
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