Product Details: Ensure your truck is prepared for the long road with advanced electrical system protection, with the OTR 30V 100-Hi-Amp Circuit Breaker with Expertise Built In™. 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®.