• [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°C to 82°C • Storage temperature: -34°C to 149°C • Number of poles: 2 • Weatherproof rating: IP67 • Material: Thermoplastic • Mounting hole size (stud): 6mm / 1/4 inch Package included: • 1 x Circuit Breaker