• 【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