I don?t follow the logic of a resettable alternator circuit breaker on the panel. The wiring from the alternator will be sized to handle all the current the alternator can make. But if the alternator was to fail a certain way, it could ask for everything the battery can deliver which is much more amps. So...put an inexpensive current limiter (large fuse) on the engine side of the firewall near the battery in-line of the wire going to the alternator. See...
https://www.amazon.com/Blue-Sea-Systems-Block-Insulating/dp/B000K2K7TW
And a fuse sized for the alternator max output that the wiring can handle, see
https://www.amazon.com/Blue-Sea-Systems-ANL-Fuses/dp/B01LBPMZ14
If this ever blows, you will not need to try to reset it. Your voltage will drop from alternator output voltage (14+ V) to battery voltage (12.5) in short order letting you know you?ve lost the alternator and go from there. If you have an engine monitor with alarm functions, set to around 13 v to let you know the alternator is offline.
Bevan