[Al Skierkiewicz]

Roger,
That is anecdotal. There is nothing that happens to a breaker that trips for over current that doesn't happen during normal operation. It is possible to produce some pitting of the contacts during a high current trip but that is not likely significant unless repeated trips occur. A warm breaker will trip at lower currents whether it is new or not. That is why I encourage teams to take a full cool down period between finals matches. Warm wires, warm robot frame, motors near the breakers, etc. all will add to this phenomena.

Kevin, do you understand the Ohm's Law reference above? If not, just ask in a PM and I will explain it further if you would like.