Versatile ProtectionHigh amperage thermal circuit breaker with manual reset switch, ideal for DC auxiliary electrical systems in vehicles, boats, and RVs. Rugged DesignEngineered for harsh environments, providing protection against current overload and short circuits in automotive and marine applications. Enhanced SafetyFeatures a protective rubber cap to prevent short circuits and a manual trip switch for quick circuit disconnection in emergencies. Waterproof ConstructionIP67 rated, suitable for use in engine compartments and bilge areas, ensuring reliable operation in wet conditions. Vibration ResistantConnection studs equipped with integrated locking washers to prevent loosening due to vibration, ensuring consistent performance. Surface MountableDesigned for easy installation in auxiliary and accessory circuits of trucks, buses, RVs, and marine systems. Specifications: Circuit rating: 30A-300A (optional) Rated voltage: 12-48V DC Break rating: 3000A@30V DC Operating temperature: -32 to 82 Storage temperature: -34149 Number of poles: 2 Weatherproof rating: IP67 Material: Thermoplastic Mounting hole size (stud): 6mm / 1/4 inch - 28 inches Package included: 1 x Circuit Breaker