I had to replace a breaker in my 7300 Parallax in the 2003 5er. It was not the same size/shape as a typical stick house breaker of the same amps. I had to take it in to do a side by each comparison to get it right. I was lucky to find a store that had that kind, not all do.
If reluctant to take it out and lose all the 120v in the Rv while away-- if it is the fridge or whatever that is a plug-in, you can use an extension cord to the pedestal, and plug the fridge or whatever in directly till you get back.
1. 1991 Oakland 28DB Class C
on Ford E350-460-7.5 Gas EFI
Photo in Profile
2. 1991 Bighorn 9.5ft Truck Camper on 2003 Chev 2500HD 6.0 Gas
See Profile for Electronic set-ups for 1. and 2.