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line circuit breaker

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  • circuit breaker — cir cuit break er, n. (Elec.) A device contained within an electrical circuit designed to interrupt the circuit when the current exceeds a preset value; it is sometimes called a {contact breaker}. Its function is to prevent fire or damage to the… …   The Collaborative International Dictionary of English

  • Circuit breaker — For other uses, see Circuit breaker (disambiguation). An air circuit breaker for low voltage (less than 1000 volts) power distribution switchgear …   Wikipedia

  • circuit breaker — A device, operating automatically, to cut off the electric current flowing through a line or wire when the current becomes excessive for the line or wire; a mechanical device for cutting an electric current intermittently by means of a movable… …   Ballentine's law dictionary

  • Earth leakage circuit breaker — An Earth Leakage Circuit Breaker (ELCB) is a safety device used in electrical installations with high earth impedance to prevent shock.PurposeMany electrical installations have a relatively high earth impedance. This may be due to the use of a… …   Wikipedia

  • circuit — noun a) The act of moving or revolving around, or as in a circle or orbit; a revolution; as, the periodical circuit of the earth around the sun. The circuit or compass …   Wiktionary

  • circuit — n. 1 a a line or course enclosing an area; the distance round. b the area enclosed. 2 Electr. a the path of a current. b the apparatus through which a current passes. 3 a the journey of a judge in a particular district to hold courts. b this… …   Useful english dictionary

  • contact breaker — circuit breaker cir cuit break er, n. (Elec.) A device contained within an electrical circuit designed to interrupt the circuit when the current exceeds a preset value; it is sometimes called a {contact breaker}. Its function is to prevent fire… …   The Collaborative International Dictionary of English

  • Arc-fault circuit interrupter — An arc fault circuit interrupter (AFCI) is a circuit breaker designed to prevent fires by detecting non working electrical arcs and disconnect power before the arc starts a fire. The AFCI should distinguish between a working arc that may occur in …   Wikipedia

  • Charing Cross (District Line) tube crash — The Charing Cross (District Line) tube crash occurred on 17 May 1938 at about 09:55 hours, between Charing Cross (now Embankment) and Temple stations. Six people were killed when a Circle Line service ran through a false clear signal into the… …   Wikipedia

  • Crowbar (circuit) — A crowbar circuit is an electrical circuit used to prevent an overvoltage condition of a power supply unit from damaging the circuits attached to the power supply. It operates by putting a short circuit or low resistance path across the voltage… …   Wikipedia

  • Direct on line starter — A direct on line starter, often abbreviated DOL starter, is a widely used starting method of electric motors. The term is used in electrical engineering and associated with electric motors. There are many types of motor starters, the simplest of… …   Wikipedia

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