Meaning of “circuit breaker” in the English Dictionary

"circuit breaker" in American English

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circuit breakernoun [ C ]

us /ˈsɜr·kət ˌbreɪ·kər/

a safety device that stops the flow of current to an electrical system:

I cut off all the circuit breakers in the house, but I could still hear a humming sound.

(Definition of “circuit breaker” from the Cambridge Academic Content Dictionary © Cambridge University Press)

"circuit breaker" in Business English

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circuit breakernoun [ C ]

uk us

a piece of equipment that stops the flow of an electric current, used to prevent damage to the wires and equipment that are connected to it:

If your internet access is out, it could be that a circuit breaker was tripped during a storm.

STOCK MARKET a rule that temporarily stops trade on a stock market or closes it when prices go down to a particular level too quickly:

The New York Stock Exchange instituted circuit breakers to reduce volatility and promote investor confidence.
There are three circuit-breaker thresholds—10%, 20%, and 30%— calculated at the beginning of each quarter.

(Definition of “circuit breaker” from the Cambridge Business English Dictionary © Cambridge University Press)

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