BobHere the info on the 50A breaker: Shortstop, 12V, U15 50AIt is auto reset thermal cycling circuit breaker.A call to the factory should provide you with the manufacturer.Good luck it is a simple R&RNo markings as to the manufacturer.Barry
Since this has only happened once, should you really be worrying about it?
If the breaker has an auto restart, then I would think it was planned to trip if it over heated. Since this has only happened once, should you really be worrying about it? It seems it just did its job. The question i think is what were you running that made it over heat?
BobWe had a similar problem on our 2012 2551. Turned out to be a 50 AMP breaker under the passenger bed. The key item here was that it automatically reset after 4 or 5 seconds. It is the only component that will auto reset. Have not had that problem since it was replaced. Let me know if you need the part number and I can get it to you tomorrow morning.Barry