300A AMP Circuit Breaker 12-48V DC Boat Auto automatic Fuse Reset Waterproof,automatic Fuse Reset Waterproof 300A AMP Circuit Breaker 12-48V DC Boat Auto, 1 x Circuit Breaker, Quickly power protection when the circuit is overloaded, IP67 waterproof protective rubber cover, Surface mount and protective stud insulators included,Supports automatic detection and manual reset, Auto automatic Fuse Reset Waterproof 300A AMP Circuit Breaker 12-48V DC Boat.