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Anonymous Poster

Breakers

04/09/2010 10:40 AM

what is the difference b/w making capacity and Breaking capacity? which is higher?
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JRaef
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Re: Breakers

04/09/2010 4:39 PM

Making capacity refers to the amount of current a switching device can handle when closing the circuit, breaking capacity is how much it can handle when opening a circuit, other than during a fault condition. The breaking capacity will always be lower, that is a lot more difficult to do because as you open a set of contacts, an arc is formed and is heating the contacts rapidly.

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msamad
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Re: Breakers

04/09/2010 7:25 PM

This will also help: http://cr4.globalspec.com/comment/391576

- MS

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