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Circuit breakers, and a method of increasing the breaking capacity of a circuit breaker
Circuit breakers, and a method of increasing the breaking capacity of a circuit breaker
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机译：断路器以及增加断路器的分断能力的方法
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摘要
A miniature circuit breaker of the kind comprising two arc runners (20, 22) which diverge towards an arc stack (24), onto which an arc is transferred as contacts of the circuit breaker are opened.;A supplementary runner (30) is provided, onto which the arc is transferred from the first of said runners (20), so that the arc extends between the second (22) and the supplementary runner (30). The supplementary runner (30) is connected into the circuit through a high impedence, so that the rate of increase of arcing current is reduced as the arc travels into the arc stack.
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