1、20/30/40Amp current circuit breaker, works with 32V DC truck, RV or boat. 2、Effectively stops power surges from damaging your circuit. 3、It is also can be used as a kill switch. 4、​Easy installation, high reliability. 5、​Ideal to be used for trucks, boats, RV electrical current overload protection, to prevent excessive current and protect appliances. Features: 20/30/40Amp current circuit breaker, works with 32V DC truck, RV or boat. Effectively stops power surges from damaging your circuit. It is also can be used as a kill switch. Easy installation, high reliability. Ideal to be used for trucks, boats, RV electrical current overload protection, to prevent excessive current and protect appliances. Specification: Condition: 100% Brand New Item Type: Reset Circuit Breaker Material: ABS + Iron Color: Black Voltage: 32V DC Optional Rated Current: 20A, 30A, 40A Waterproof Rate: IP67 Reset Type: T3 Manual Reset (Switchable) SAE Standard: SAEJ553 SAEJ1171 Outage Capacity: 2500A @ 14Vdc Working Temperature: -32℃ - +82℃ Wiring Mode: Input - BAT LINE SHI, Output - AUX LOAD Weight: Approx. 43g Package List: 1 * Reset Circuit Breaker 1 * Gasket Notes: 1. It is easy to install, but professional installation is always recommended. 2. Please allow 0.5 - 1 inch error due to manual measurement, thanks for your understanding.