Equip your truck with advanced electrical system protection, with the OTR 30V 80-Hi-Amp Circuit Breaker with Expertise Built In. By utilizing an 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. Built 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.