ok i will look into those fuses and the double pole solar disconnect. The heat shrink with appropriate colors and bus bar covers.I'd recommend ditching the breakers and using good fuses. Those breakers have a terrible history of not stopping current when needed
Class T is the best fuse to put on a powerful LifePo4 battery, second best is a MRBF terminal fuse
Then use a decent quality battery disconnect switch and between the battery fuse and the busbar plus a double pole solar disconnect. This allows you, after any maintenance, to connect the battery to the charger first so it can see the batteries voltage then connect the solar
Thank you