circuit breaker



  • noun
    (written as circuit-breaker)
    a small protective device in the circuit which blows or breaks before a dangerous overload of current arises

Cars & Driving

  • noun a protective device which can be reset; it breaks an electric circuit to prevent damage when the circuit is overloaded or overheated by excess current flow


  • noun a device which protects equipment by cutting off the electrical supply when conditions are abnormal


  • An electrical device for discontinuing current flow during an abnormal condition. Unlike a fuse, a circuit breaker becomes reusable by resetting a switch. See also automatic circuit breaker.


  • A device which automatically opens a circuit under specified conditions, such as a current exceeding a set amount. If it resets itself after another condition is met, such as the passing of a given time period, then it is an automatic circuit breaker. Its abbreviation is CB.
  • acronymCB


  • (written as Circuit Breaker)
    A situation in which all trades on all exchanges are halted by order of the Securities and Exchange Commission and the National Association of Securities Dealers, triggered by a significant downward movement in the value of the Dow Jones Industrial Average. A circuit breaker is intended to prevent investors from triggering a market crash through panic-driven mass sell-offs.

Real Estate

  • noun an electrical device used to interrupt an electrical supply when there is too much current flow