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    kreesh's Avatar
    kreesh Posts: 1, Reputation: 1
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    #1

    May 3, 2008, 10:12 PM
    How do vacuum circuit breakers operate in an industrial plant?
    How do vacuum circuit breakers operate in an industrial plant?
    tkrussell's Avatar
    tkrussell Posts: 9,659, Reputation: 725
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    #2

    May 4, 2008, 05:40 AM
    Here is a diagram for a VCB:

    Vacuum Circuit Breaker

    If your question refers to the word "vacuum", each contact is enclosed in a sealed vessel, sometimes called a "bottle". This enclosure contains the arc from normal opening operations and they will contain and extinguish the arc blast from a short circuit fault.
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