•【Versatile Protection】High amperage thermal circuit breaker with manual reset switch, ideal for DC auxiliary electrical systems in vehicles, boats, and RVs. •【Rugged Design】Engineered for harsh environments, providing protection against current overload and short circuits in automotive and marine applications. •【Enhanced Safety】Features a protective rubber cap to prevent short circuits and a manual trip switch for quick circuit disconnection in emergencies. •【Waterproof Construction】IP67 rated, suitable for use in engine compartments and bilge areas, ensuring reliable operation in wet conditions. •【Vibration Resistant】Connection studs equipped with integrated locking washers to prevent loosening due to vibration, ensuring consistent performance. •【Surface Mountable】Designed 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: -34℃～149℃ •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