Outfit your semi truck to be Ready for the Road Ahead™ with advanced electrical system protection, with the Littelfuse 30V 100-Hi-Amp Thermo Plastic Circuit Breaker. Thanks to its advanced design, this replacement component is able to automatically cut the power in a circuit when an excess flow of amps is detected, preventing potential damage or overheating in various devices. Crafted with simple controls that allow for manual resetting unlike traditional fuse boxes that require new components each reset. FleetPride is your First Click in Heavy Duty®.