Measuring used by some major stock and commodities exchanges to restrict trading temporarily when markets rise or fall too far and/or too fast
A system of trading halts and price limits on equities and derivative markets designed to provide a cooling-off period during large, intraday market movements The first known use of the term circuit breaker in this context was in the Report of the Presidential Task Force on Market Mechanisms (January 1988), which recommended that circuit breakers be adopted following the market break of October 1987
In response to the market breaks in October 1987 and October 1989, the New York Stock Exchange instituted several circuit breakers to reduce market volatility and promote investor confidence
are a device to help alleviate the burden of property taxes Senior citizens or other residents whose income is below a certain amount get, for example, income tax refunds when the property taxes paid exceed a certain percentage of income
Measures instituted by the major stock and commodities exchange to halt trading temporarily in stocks and stock index futures when the market has fallen by a specified amount within a specified period Circuit breakers were instituted after Black Monday in 1987 and were modified following another sharp market drop in October 1989 Their purpose is to prevent a market free-fall by permitting a rebalancing of buy and sell orders
Measures used by some major stock and commodities exchanges to restrict trading temporarily when markets rise or fall too far and/or too fast
over-current components that trip to open the circuit and protect other electrical/electronic components from excess current flow; see fusesCircuit breakers can be reset after they "trip" to continue protecting the circuit
Circuit breakers are the switches found in the electrical service box of homes Each circuit breaker protects a specific group of electric devices (outlets, overhead lights, appliances, etc ) If the devices draw too much power, the circuit breakers will shut-off ("trip") the power to all the devices to which it supplies electricity Once the problem has been fixed, the circuit breaker can be "reset " When working on home automation projects that involve the home's wiring the respective circuit breakers should always be turned off manually to avoid electrocution Caution: some wall boxes contain more than one switch or outlet, and these may receive their power from different circuit breakers Always turn off all electric current to the wall box being worked on
Procedures established to forestall the market from spiraling down Circuit breakers will "kick-in" when the market has dropped by a specific amount within a certain period At that time, the major stock and commodities exchanges will temporarily stop trading in stocks and stock index futures to give floor traders time to rebalance buy and sell orders Circuit breakers were introduced in 1987 after Black Monday The levels were revised when the market had another steep drop in October 1989
A complex series of rules adopted by securities and futures exchanges, in the aftermath of the 1987 Dow Jones crash, in an attempt to slow down market activity during periods of high volatility
Limits on NYSE trading established in response to October 1987 and October 1989 market breaks The point drops or increases that trigger circuit breaks are set quarterly as a percentage of DJIA The collar triggered at a decline or increase of 2% limits arbitrage sell or buy orders on S&P 500 stocks The collar triggered at a 10% decline halts trading for one hour if before 2 PM ET, or for 30 minutes if between 2 PM ET and 2: 30 PM ET The collar triggered at a 20% decline halts trading for two hours if before 1 PM ET, or for one hour if between 1 PM ET and 2 PM ET, or for the remainder of the day if later The collar triggered at a 30% decline halts trading for the remainder of the day Nasdaq follows NYSE in halting trading So far the only day when the trading was halted because of a decline was on October 27, 1997 due to a 7% decline (point values weren't adjusted to a percentage then)
Measures used by some major stock and commodities exchanges to restrict trading temporarily when markets rise or fall too far, too fast For example the New York Stock Exchange (NYSE) employs a circuit breaker that will halt trading if the Dow Jones Industrial Average declines by more than 10% in one day BACK TO TOP
a device designed to open a circuit either by manual action or by automatic action when current exceeds a value longer than permitted A circuit breaker can provide overcurrent protection
A system of trading halts and price limits on equities and derivative markets designed to provide a cooling-off period during large, intraday market declines The first known use of the term circuit breaker in this context was in the Report of the Presidential Task Force on Market Mechanisms (January 1988), which recommended that circuit breakers he adopted following the market break of October 1987
The overcurrent protection device (OCPD) most commonly in residential use The circuit breaker can be opened and closed repeatedly to allow or stop power from flowing along the branch circuit Back to alphabetical list
A switch that automatically disconnects power to the circuit in the event of a fault condition Located in substations Performs the same function as a circuit breaker in a home BACK TO TOP
-A device that can be used to manually open or close a circuit, and to automatically open a circuit at a predetermined level of overcurrent without damage to itself
A procedure that temporarily halts trading on all U S stock markets for one hour when the Dow Jones Industrial Average falls 250 points or more within a trading day The pause is designed to allow time for the markets to absorb the news that precipitated the decline Should the average fall another 150 points within the same day, trading would again be halted, this time for two hours
CIRCUIT BREAKERS automatically stop the flow of electricity when it senses too much current or an abnormal condition Circuit breakers are located in substations and on transmission and distribution lines throughout Duquesne Lights system Once a circuit breaker opens, it must be reset before the flow of power can be restored
An automatic, magnetic, or bimetallic device that will open a current-carrying circuit causing the circuit to become inoperative This device is used to prevent circuit damage under a condition of excess current Unlike a fuse that melts when its rating is exceeded, a circuit breaker can be reset automatically or manually when the circuit problem is corrected
A circuit breaker is a device which can stop the flow of electricity around a circuit by switching itself off if anything goes wrong. There is an internal circuit breaker to protect the instrument from overload. An automatic switch that stops the flow of electric current in a suddenly overloaded or otherwise abnormally stressed electric circuit. a piece of equipment that stops an electric current reaching a machine if the machine becomes dangerous
A device which looks like a switch and is usually located inside the electrical panel or circuit breaker box It is designed to (1) shut of the power to portions or all of the house and (2) to limit the amount of power flowing through a circuit (measured in amperes) 110 volt household circuits require a fuse or circuit breaker with a rating of 15 or a maximum of 20 amps '220' volt circuits may be designed for higher amperage loads e g a hot water heater may be designed for a 30 amp load and would therefore need a 30 amp fuse or breaker also see GFI
A re-settable protection device that amounts to a fuse that never needs replacement (e g , My stereo shop got tired of replacing 50 amp fuses in my system so they went ahead and installed a 50 amp circuit breaker )
Device used to open and close circuit by non-automatic means, as well as to open circuit automatically on predetermined overload current without injury to itself (when properly applied within its rating)