[TenTec] Speed of fuses versus circuit breakers

Ken Brown ken.d.brown at hawaiiantel.net
Sat Sep 22 16:09:53 EDT 2007


>  Having checked the "fast" acting circuit breaker's
> curve, I use an automotive fuse of the miniature tag style rated at 15
> amps. 
>   
There was a discussion about the relative speeds of circuit breakers 
versus fuses on this reflector some time ago. I stated that my gut 
feeling was that fuses might very well be much quicker responding, based 
on less mass having to move a shorter distance in order for the circuit 
to be interrupted. I was told that my gut feeling was wrong, wrong, 
wrong. Can you refer me to a web site or sites that will show circuit 
breaker and fuse response times? I would like to replace my gut feeling 
with some real measured data.

DE N6KB



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