Once you find the breaker, I would be concerned about why it tripped. If it is 24v and you have two 12v batteries in series, it could be one is going bad, not producing a full 12v. Lower voltage results in higher amperage and that could be the reason for the trip. Check battery cells with a hydrometer.
I have a 2016 400 as well and mine tripped before also. Yellow breaker you get to from manual hatch door inside salon and you’ll see on the most forward wall and it’s labeled. Have you switched your anchor? Mine is still from factory and rarely holds so I stopped trying and either dock at restaurants or tie up to others. I want to change out my anchor ASAP. The one from factory seems too small plus there’s more chain needed I feel.