For safe operation of your inverter, a Circuit Breaker is a recommended accessory that offers you over-current protection. The CB150 is a high amperage, single pole thermal circuit breaker rated for applications up to 150A DC at 48 volts. The CB150 features a visible trip indicator with manual reset. Perfect for applications such as auxiliary and accessory circuits in trucks, busâ€™, RV's and marine systems, as well as battery chargers and DC audio systems. For specific recommendations, refer to the inverter or inverter/charger ownerâ€™s manual.