PowerGuard 30A 12V Circuit Breaker Resettable DC circuit breaker for 12-48 V systems with a current range of 30A-300A (multiple variants available via links below). It protects vehicles and boats against overcurrent and power surges that could otherwise damage electronics and amplifiers. The circuit breaker is waterproof and ignition protected in accordance with SAE J1625 , J1171 , and UL1500 , making it safe for use in demanding environments. The manual reset button allows the breaker to be reused and also function as a main switch/kill switch, unlike traditional fuses. Suitable for cars/trucks, buses, motorhomes, caravans, winches, tractors, and ATVs, as well as marine applications thanks to its waterproof design. Technical specifications: Type: Resettable circuit breaker Color: Black Current: 30A Voltage: 12-48 V DC (max) Mounting: Surface mounted DC circuit breaker Connection: 1/4" stainless steel threaded terminals (studs) Dimensions:  73x48mm Operating temperature: -32 °C to +82