circuit breaker with magnetic trip

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

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• Protective relay — See also: Power system protection In electrical engineering, a protective relay is a complex electromechanical apparatus, often with more than one coil, designed to calculate operating conditions on an electrical circuit and trip circuit breakers …   Wikipedia

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• Utility Relay Company — (Chagrin Falls, Ohio, USA) manufactures programmable protective relays for power distribution systems. The relays, commonly referred to as trip units, are applied on both AC and DC air frame power distribution circuit breakers.Main products [http …   Wikipedia

• Digital protective relay — In electrical engineering of power systems, a digital protective relay uses a microcontroller with software based protection algorithms for the detection of electrical faults. Such relays are also termed as microprocessor type protective relays.… …   Wikipedia

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• Network protector — A network protector (also reverse power relay) is a type of electric protective device used in electricity distribution systems. The function of the network protector is to automatically connect and disconnect its associated power transformer… …   Wikipedia