Definitions of circuit breaker [ˈsɜr kɪt]

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Definition of 'circuit breaker'

Random House Webster's College Dictionary

1. (n.) circuit breaker
a device for automatically interrupting an electric circuit to prevent excessive current, as that caused by a short circuit, from damaging the apparatus in the circuit or from causing a fire.

Etymology: (1870–75, Amer.)

Definition of 'circuit breaker'

Princeton's WordNet

1. (noun) circuit breaker, breaker
a device that trips like a switch and opens the circuit when overloaded

Definition of 'circuit breaker'

The Standard Electrical Dictionary

1. circuit breaker
Any apparatus for opening and closing a circuit is thus termed, but it is generally applied to automatic apparatus. A typical circuit breaker is the hammer and anvil of the induction coil. (See Induction Coil; Anvil.) Again a pendulum connected to one terminal of a circuit may swing so as to carry a point on its lower end through a globule of mercury as it swings, which globule is connected to the other terminal. A great many arrangements of this character have been devised.

Synonym.--Contact Breaker.

'circuit breaker' - Nearby Entries
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