Circuit breaker wikipedia - Search
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    Origins

    An early form of circuit breaker was described by Thomas Edison in an 1879 patent application, although his commercial … See more

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    Circuit breaker - Wikipedia

    • A circuit breaker is an electrical safety device designed to protect an electrical circuit from damage caused by current in excess of that which the equipment can safely carry (overcurrent). Its basic function is to interrupt current flow to protect equipment and to prevent fire. Unlike a fuse, which operates once and then must be replaced, a circ… See more

    Types and Examples
    Types and Examples
    Circuit breakers are devices that interrupt the flow of electric current when a fault is detected. They protect electrical equipment and circuits from damage and fire hazards.
    Operation

    All circuit breaker systems have common features in their operation, but details vary substantially depending on the voltage class, current rating and type of the circuit breaker.
    The circuit … See more

    Residual-current device - Wikipedia
    Wikipedia
    How Circuit Breakers Work - HowStuffWorks
    HowStuffWorks
    Arc interruption

    Low-voltage miniature circuit breakers (MCB) use air alone to extinguish the arc. These circuit breakers contain so-called arc chutes, a stack of mutually insulated parallel metal plates that divide and cool the arc. By … See more

    Short circuit

    Circuit breakers are rated both by the normal current that they are expected to carry, and the maximum short-circuit current that they can safely interrupt. This latter figure is the ampere interrupting capacity (A… See more

    Standard current ratings

    Circuit breakers are manufactured with standard ratings, using a system of preferred numbers to create a useful selection of ratings. A miniature circuit breaker has a fixed trip setting; changing the operati… See more

    Types

    Many classifications of circuit breakers can be made, based on their features such as voltage class, construction type, interrupting type, and structural features.
    Low-voltage (less than 1,000 VAC) types are commo… See more

    "Smart" circuit breakers

    Several firms have looked at adding monitoring for appliances via electronics or using a digital circuit breaker to monitor the breakers remotely. Utility companies in the United States have been reviewing use of the technol… See more

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