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What is the short circuit capacity of a BS1361 60 amp fuse?

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What is the short circuit capacity of a BS1361 60 amp fuse?

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  1. 60 Amps. It is the rated capacity. Give or take a couple of amps.


  2. It's a common misunderstanding that a fuse blows as soon as the rated current is exceeded.  Depending on the construction it may pass 1.3-1.5 X the rated current for a considerable time. Look at the graphs of current vs speed (see attachment) and KA va Amp rating

    a 60A fuse could pass 100A for 2000 seconds - 1/2 hour

    or 8000A very briefly

  3. 60 amperes. Exceed that, the fuse will blow.

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