Breaker Capacity

Why making capacity of the circuit breaker is higher than breaking capacity?

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rajashekharreddy

  • Dec 4th, 2009
 

Making capacity is the max fault current it can carry during closing of breaker, e.g. You are closing a breaker on fault. The making capacity is always higher because it is expressed in peak value not rms, and also because of the DC offset, voltage and PF while closing

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