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vacuum circuit breaker |
Also found in: Acronyms | 0.02 sec. |
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vacuum circuit breaker [′vak·yəm ′sər·kət ‚brā·kər] (electricity) 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. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| The size of a vacuum circuit breaker is less than the SF6 circuit breaker. |
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