For the stock market term, see Trading curb. For other uses, see Circuit breaker (disambiguation).
Circuit Breaker
A two-pole miniature circuit breaker
Electronic symbol
An air circuit breaker for low-voltage (less than 1,000 volt) power distribution switchgearFour one-pole miniature circuit breakers
Electrical installations
Wiring practice by region or country
North American practice
United Kingdom practice
Regulation of electrical installations
BS 7671 UK wiring regulations
IEC 60364 IEC international standard
Canadian Electrical Code (CE Code)
U.S. National Electrical Code (NEC)
Cabling and accessories
AC power plugs and sockets
Cable tray
Electrical conduit
Mineral-insulated copper-clad cable
Multiway switching
Steel wire armoured cable
Ring main unit
Ring circuit
Thermoplastic-sheathed cable
Switching and protection devices
AFCI
ELCB
Electrical busbar system
Circuit breakers
Disconnector
Fuse
Residual-current device
Distribution board
Consumer unit
Electrical switch
Earthing systems
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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 circuit breaker can be reset (either manually or automatically) to resume normal operation.
Circuit breakers are made in varying current ratings, from devices that protect low-current circuits or individual household appliances, to switchgear designed to protect high-voltage circuits feeding an entire city. Any device which protects against excessive current by automatically removing power from a faulty system, such as a circuit breaker or fuse, can be referred to as an over-current protection device (OCPD).
A circuitbreaker is an electrical safety device designed to protect an electrical circuit from damage caused by current in excess of that which the equipment...
Circuitbreaker is a design pattern used in software development. It is used to detect failures and encapsulates the logic of preventing a failure from...
Sulfur hexafluoride circuitbreakers protect electrical power stations and distribution systems by interrupting electric currents, when tripped by a protective...
electrical power feed into subsidiary circuits while providing a protective fuse or circuitbreaker for each circuit in a common enclosure. Normally, a main...
switchgear is composed of electrical disconnect switches, fuses or circuitbreakers used to control, protect and isolate electrical equipment. Switchgear...
and protected by a 30 A fuse, an older 30 A circuitbreaker, or a European harmonised 32 A circuitbreaker. Sometimes 4 mm2 cable is used if very long...
some circuitbreakers. The largest transmission substations can cover a large area (several acres/hectares) with multiple voltage levels, many circuit breakers...
A Property Tax CircuitBreaker is a tax refund in the United States given to low income individuals and families whose property tax liability is a large...
A trading curb (also known as a circuitbreaker in Wall Street parlance) is a financial regulatory instrument that is in place to prevent stock market...
A circuitbreaker analyzer is an instrument that measures the parameters of a circuitbreaker. In 1984, Megger patented a digital circuitbreaker analyzer...
used to identify equipment and devices in a system such as relays, circuitbreakers, or instruments. The device numbers are enumerated in ANSI/IEEE Standard...
MCB; breaks circuit on being triggered either as an RCD or by overcurrent. Earth leakage circuitbreaker (ELCB) An obsolete circuitbreaker type triggered...
the core component of medium-voltage circuit-breakers, generator circuit-breakers, and high-voltage circuit-breakers. Separation of the electrical contacts...
pull the P-40 circuitbreaker that the area around the circuitbreaker was smudged from routinely being manipulated. This circuitbreaker also controls...
A transient recovery voltage (TRV) for high-voltage circuitbreakers is the voltage that appears across the terminals after current interruption. It is...
animal cannabinoid receptors Circuitbreaker, an automatic electrical switch designed to protect an electrical circuit from damage caused by overcurrent...
Federal Pacific is best-known for a line of circuitbreaker equipment called Stab-Lok. These circuitbreakers and electrical panels were used extensively...
disconnection of supply (ADS) device such as a circuitbreaker or a RCD will automatically open the circuit to clear the fault. Functional earthing serves...
An integrated circuit (IC), also known as a microchip, computer chip, or simply chip, is a small electronic device made up of multiple interconnected...
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