Parallel switching occurs when two or more circuit-breakers are tripped to interrupt a shared fault current. This is typically the case for such bus arrangements as a double breaker, breaker-and-a-half, breaker-and-a-third, and ring buses. Ideally, all of the circuit-breakers should... Read more

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IEEE / Institute of Electrical and Electronics Engineers Incorporated

Circuit breakers include an arc chamber and an arc chute comprising a plurality of arc plates in the arc chamber. The circuit breakers also include a line conductor assembly with at least one arc runner attached to a line conductor in the arc chamber. The arc runner can extend below but adjacent to a bottom arc plate to thereby guide a respective arc into the arc chute.

A system can include at least one circuit breaker. The system can also include a prognostic and health monitoring (PHM) system. The PHM system can include at least one measuring device that measures at least one parameter associated with the at least one circuit breaker. The PHM system can also include a controller that receives measurements made by the at least one measuring device and analyzes the measurements to evaluate a performance of the at least one circuit breaker. The measurements can be made while the at least one circuit breaker is in service.

CNBC's Eunice Yoon reports Chinese regulators have suspended market circuit breakers, according to the Shanghai Stock Exchange.

Monday marked the first time that a modern circuit breaker kicked in, and it did its job — to pause the market and create liquidity.

On Monday, for the second time in two weeks, trading in Indian markets was temporarily halted for 45 minutes after a sharp plunge in stock prices. BSE's Sensex crashed 10% in trade as over 75 districts and major cities in India