[Mobile-Portable] Automotive Circuit Breakers VS Fuses ?

[Arthur F Clemons]

D C *Mac* Macdonald wrote:
> Hi, Randy.
>  
> I believe that fast-blow fuses offer a far greater degree of protection
> for your "stuff."  If I'm not mistaken, circuit breakers will hold a 100%
> overload (double the rated current) indefinitely; not something I would
> desire.  Could even start a fire in worst case circumstances.
>  
> Others here on the list are welcome to confirm or contradict my memory.
>  
> 73 - Mac, K2GKK
> Oklahoma City,OK

There are some relatively fast acting circuit breakers, TenTec for 
example used to sell an AirPax "magnetic" Circuit breaker that was only 
slightly slower than a fast blow fuse.  How do I know, I tested it with 
25 amp loads with the fuse in the negative lead and the AirPax in the 
positive.  It blew every time, including one time that the fuse didn't.  
I don't know where to get another, but if I see one, I'm buying it.