Product Details Ⅰ. High current handling capability with ratings from 50A to 300A (optional), suitable for various auxiliary DC electrical systems in trucks, buses, RVs and marine applications Ⅱ. Manual reset function allows for quick restoration after tripping, ensuring continuous operation of critical circuits Ⅲ. IP67 weatherproof rating and hermetic waterproofing make it ideal for engine compartments and bilge areas, protecting against harsh environments Ⅳ. Thermal trip mechanism provides reliable overcurrent protection, preventing damage to electrical components Ⅴ. Protective rubber cap helps prevent unwanted short circuits, enhancing safety during use Specification Ⅰ. Circuit Ratings: 50A, 80A, 100A, 150A, 200A, 250A, 300A (Optional) Ⅱ. Voltage Rating: 12-48V DC Ⅲ. Interruption Rating: 3000A@30V DC Ⅳ. Operating Temperature: -32°C to 82°C (-25.6°F to 179.6°F) Ⅴ. Storage Temperature: -34°C to 149°C (-29.2°F to 290.2°F) Ⅵ. Poles: 2 Ⅶ. Weatherproof: IP67 Ⅷ. Certificates: SAE J1627, J1171/UL1500 Ⅸ. Color: Black Ⅹ. Housing: Thermoplastic, UL Rated 94V0 Ⅺ. Connection Stud Dimensions: M6 x 2 (0.24 x 0.08 inches) Package List Ⅰ. 1 x Manual Reset Switch Warm Tips Ⅰ. Ensure proper voltage and current compatibility before installation Ⅱ. Tighten connection nuts with integral lock washers to prevent loosening due to vibration Ⅲ. Keep protective rubber cap in place when not in use to avoid short circuits Ⅳ. Install in a dry and well-ventilated area for optimal performance Ⅴ. Use in auxiliary and accessory circuits for truck, bus, RV and marine systems as recommended