RV Inverter Question

[railcon56]

50 amp Connection Shore Power --------> Inverter/Charger--------->50 amp GFCI Breaker (Spa Panel) ----------> RV breaker box.
Everything is working fine now, but the 50-amp breaker coming from the Inverter going into my existing Rv box Randomly trips. sometimes not for days, and then 2 time in 10 mins. Is that Breaker necessary?

 

[sunshine_eggo]

A breaker is necessary on each circuit. If there is a second breaker providing protection, it's not needed. If there's not another breaker, it's needed.

Breakers can wear out. Simply replacing the breaker may rectify the situation.

Is it possible your loads are exceeding the limits on a circuit and triggering the breaker?