circuit breaker

noun
Updated on: 18 Nov 2017

Definition of circuit breaker

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

Recent Examples of circuit breaker from the Web

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.

First Known Use of circuit breaker

1872


CIRCUIT BREAKER Defined for English Language Learners

circuit breaker

noun

Definition of circuit breaker for English Language Learners

  • : 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 Defined for Kids

circuit breaker

noun

Definition of circuit breaker for Students

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

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