Inline fuse or auto-reset circuit breaker for battery?

[qwerty11]

Which one is better for the positive coming directly off the battery and why?

[working on it]

If the devices downline from the battery are further protected by their own separate fuses, especially if they are easy to reach and/or replace blown fuses, then an auto reset circuit breaker. If the "inline fuse" is the only protection for the whole system, then use it. In automobiles, a circuit breaker is often the first line of defense for temporary overloads (like power windows, wipers, etc), but a fuse or fusible link serve as the final protection. I use a circuit breaker between battery and main switch to my electrical panel box, followed there by individual fuses for hard to replace wiring/circuits. I also have three unfused circuits, straight from the battery, but are to cheap LED lighting, easy to replace, and of extremely low amp draw thru small gauge wiring (almost self-dissolving under overload).

[qwerty11]

If the devices downline from the battery are further protected by their own separate fuses, especially if they are easy to reach and/or replace blown fuses, then an auto reset circuit breaker. If the "inline fuse" is the only protection for the whole system, then use it. In automobiles, a circuit breaker is often the first line of defense for temporary overloads (like power windows, wipers, etc), but a fuse or fusible link serve as the final protection. I use a circuit breaker between battery and main switch to my electrical panel box, followed there by individual fuses for hard to replace wiring/circuits. I also have three unfused circuits, straight from the battery, but are to cheap LED lighting, easy to replace, and of extremely low amp draw thru small gauge wiring (almost self-dissolving under overload).

Yeah I was planning on having individual fuses for everything. Does it make much of a difference if the breaker is 6" from the positive terminal vs 3'?

[working on it]

Does it make much of a difference if the breaker is 6" from the positive terminal vs 3'?

Not at the low voltage and amperages in a trailer wiring harness.