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Vacuum Circuit Breakers

Bay Breakers Online is the place to shop for all switchgear components including top quality vacuum circuit breakers from leading manufacturers like ITE/Siemens, Square D, General Electric, and Westinghouse in current ratings up to 3,000 amps. These modern vacuum breakers are highly efficient in diverse applications, feature precision electronic control, require very little maintenance, and tend to have a longer life expectancy between overhauls.

Vacuum circuit breakers provide outstanding protection for a wide range of medium voltage power supplies up to 35,000 volts. Vacuum circuit breakers interrupt current by creating and extinguishing an arc in a vacuum chamber. A pair of contacts is sealed within the vacuum chamber. Motion is transferred through a bellows to the movable contact and when the two contacts are parted a current arc occurs and is continually supported by a metallic vapor boiled from the electrode contacts. These vapor particles expand in the vacuum and condense on the inner surfaces of the chamber. At a natural current zero the vapor particles disappear and the current arc is extinguished. The vacuum also acts as a dielectric to insulate the breaker contacts after the current arc has been interrupted.

Bay Breakers Online also offers brand name vacuum reclosers, a type of breaker that can interrupt and then reclose an AC current circuit automatically for a set number of cycles. Vacuum reclosers are great for applications where frequent current surges and tripping are an expected aspect of operation. Check out our comprehensive online inventory for vacuum breakers and many other electrical components for your next important project.

Our name brand atmospheric and pressure vacuum breakers are highly efficient, rugged, and reliable for a host of demanding switchgear applications. Various models of vacuum circuit breakers are used in electrical distribution for protection and governance of overhead lines, transformers, motors, generators, capacitor banks, and distribution substations. Vacuum circuit breakers are frequently seen in small transformer substations and can be used in unmanned facilities without auxiliary power supply.

Vacuum circuit breakers are the power supply protection of choice for demanding medium voltage power distribution and switching applications. Bay Breakers Online provides vacuum breakers from the most trustworthy names in the business including GE, Cutler Hammer, Square D, and Westinghouse. Explore the Bay Breakers Online catalog for vacuum breakers and other essential electrical hardware such as motor controls, safety disconnect switches, motor starters, and every conceivable model of circuit breaker on the market.
Bay Breakers Online offers a full replacement one year warranty with every vacuum breaker or other electrical component, a comprehensive inventory, the most affordable prices anywhere, and experienced electrical professionals providing outstanding customer service. Contact us for assistance in choosing the perfect vacuum circuit breaker and to help identify the other electrical supplies integral your upcoming application.

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Vacuum Circuit Breakers

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