The breaker that feeds the hydraulic pump can be a manual or auto reset style. I installed the manual reset 80 amp when I did ours. These automotive 40 or 50 amp breakers are cheap, so I'm pretty sure that was the driving force behind there use. The wiring that goes to the pump and to the inside panel is #4 strand copper which is more than capable to handle the 80 amp breaker and this is the size breaker Lippert says should be used. This Lip Sheet applies to all Lippert hydraulic systems, regardless of brand of RV. Notice, Lippert does not specify the use of a manual or auto reset breaker. This has been an ongoing problem for years. I found the original Lip Sheet in 2013, and was having the problem back then. I bought the breaker and installed it and haven't had an issue with intermittent hydraulic operation ever since.
https://manuals.heartlandowners.org/...ippert0058.pdf