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Unread 04-04-2012, 16:55
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Re: Intermittent connection on field only

Quote:
Originally Posted by Al Skierkiewicz View Post
The trip point is reduced for each successive trip as the breaker heats up internally. When the breaker trips repeatedly, it buzzes and gets HOT!
I just want to add that this means that it's hard to repeatedly overload the Victor's in a short duration of time when the 40A auto-reset breaker is protecting the circuit because the breaker heating causes them to trip at lower and lower currents.

However, each time you let the breaker cool off you run the risk again that the next overload will get a shot at cumulatively damaging the MOSFETs in the Victors because it's back to 240A max and 100A-120A normally.

The time frame between matches can reach that point. Also if you blow cool air on the breakers you increase the risks of this happening.