circuit breaker

noun
1.
Electricity. Also called breaker. a device for 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.
2.
any property-tax relief measure that reduces or limits property taxes for certain eligible taxpayers, as those with low income or the elderly.

Origin:
1870–75, Americanism

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To circuit breaker
Collins
World English Dictionary
circuit breaker
 
n
Compare fuse Sometimes shortened to: breaker a device that under abnormal conditions, such as a short circuit, interrupts the flow of current in an electrical circuit

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
American Heritage
Science Dictionary
circuit breaker  
A switch that automatically interrupts the flow of electric current if the current exceeds a preset limit, measured in amperes. Circuit breakers are used most often as a safety precaution where excessive current through a circuit could be hazardous. Unlike fuses, they can usually be reset and reused.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
Example sentences
By the time a fuse or circuit breaker opens a circuit to defuse these
  conditions, a fire may already have begun.
Make sure the wiring and devices used in the circuit are connected to a circuit
  breaker or fuse of the proper size.
Fifty-one minutes later, a circuit breaker on the second transformer burst into
  flames.
You've got to put a circuit breaker on that thing, or something.
Copyright © 2014 Dictionary.com, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature