circuit breaker


Definition of circuit breaker

: a switch that automatically interrupts the current of an overloaded electric circuit

Examples of circuit breaker in a Sentence

Recent Examples on the Web South Australians will pause and create a 6 day circuit breaker that will enable us to get ahead of the Parafield Cluster. Andrew Mark Miller, Washington Examiner, "Australian police tell woman in viral tweet she can't walk her dog or exercise outside during new virus lockdown," 19 Nov. 2020 That would give districts from Nov. 25 to Jan. 4 as a circuit breaker period — buying six weeks of space while disrupting only 15 days of classes. Robert Gehrke, The Salt Lake Tribune, "Robert Gehrke: We can use the holiday breaks to reboot our school strategy and perhaps get a handle on the coronavirus," 16 Nov. 2020 Instead, authorities would likely opt for 2-3 week circuit breaker lockdowns to take the load off the public health system. Jason Scott, Fortune, "A city offers harsh lessons after emerging from one of the world’s longest lockdowns," 28 Oct. 2020 The lights still must be matched to a circuit breaker with the same three-digit string. Laura Feiveson, Popular Mechanics, "Solution to Riddle of the Week: The Circuit Breaker Riddle," 12 June 2020 The European agency also wants pilots to be given instructions on how to pull a circuit breaker to halt a mistaken stall warning. Washington Post, "FAA chief Steve Dickson pilots updated Boeing 737 Max: ‘This is not a publicity stunt’," 30 Sep. 2020 Go to the main electrical panel and flip off the circuit breaker that’s feeding power to the light switch. Joseph Truini, Popular Mechanics, "How to Replace a Light Switch," 4 July 2020 Restore power to the switch by flipping on the circuit breaker (or replacing the fuse). Joseph Truini, Popular Mechanics, "How to Replace a Light Switch," 4 July 2020 As proposed by Boeing, the stick shaker could only be deactivated by pulling a circuit breaker, Livia Belcea, Press Secretary for Transport Minister Marc Garneau, said on Monday. Ryan Beene,, "Boeing 737 Max Return Outside U.S. Seen Slowed by Regulators," 12 Aug. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'circuit breaker.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of circuit breaker

1872, in the meaning defined above

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Time Traveler for circuit breaker

Time Traveler

The first known use of circuit breaker was in 1872

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Cite this Entry

“Circuit breaker.” Dictionary, Merriam-Webster, Accessed 28 Feb. 2021.

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More Definitions for circuit breaker

circuit breaker


English Language Learners Definition of circuit breaker

: a switch that automatically stops the flow of electricity to a place or device if the current becomes too strong or another dangerous problem occurs

circuit breaker


Kids Definition of circuit breaker

: a switch that automatically stops the flow of electric current if a circuit becomes overloaded

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