2011 Xpress wiring question

[mjf9730]

I recently had the battery compartment flood on my 2011 xpress 17' boat. It has the F70 Yamaha engine. I'm trying to replace a breaker that came apart but I don't know what it protects or what amperage it should be. It is wired into the positive side of the battery for the engine. There is a similar breaker wired into my 24v set up. Does anyone know what amperage/voltage this breaker should be.

 

[alldodge]

The "40A" means It is 40AMP

 

[mjf9730]

The "40A" means It is 40AMP

No, I got that part. The picture is of the breaker that came off of my trolling motor batteries. There was a breaker that came off of my cranking battery and im not sure what amperage that one should be. I was using the picture of that breaker for a reference. The breaker that im looking for is gone.