A. Product Details 1. **Product Dimensions**: 7.4×4.8×4.5 cm 2. **Product Materials**: Plastic + Metal 3. **Package List**: 1 circuit breaker 4. **Product Packaging**: OPP packaging 5. **Package Dimensions**: 10×5×5 cm 6. **High - Amp Thermal Trip Circuit Breaker**: - It is equipped with a manual reset switch and is suitable for other electrical systems. - It is suitable for use in harsh environments such as racing cars to prevent current overload or short - circuits. - The protective rubber cap can help prevent unnecessary short - circuits. - It is used in truck, bus, RV, and marine applications; also used in battery costs and audio systems. - The switchable surface - mount circuit breaker is found in the auxiliary and accessory circuits of truck, bus, camper, and marine systems. - It is a sealed and waterproof device, suitable for engine compartments and bilge areas. - The trip switch manual can quickly disconnect the circuit in an emergency. - The connection bolt size is M6×2 nuts with an integrated locking ring to prevent loosening due to vibration. B. Specifications 1. **Circuit Rated Current**: 30A, 40A, 50A, 60A, 70A, 80A, 90A, 100A, 120A, 140A, 150A, 200A, 250A, 300A (optional) 2. **Voltage Rating**: 12 - 48V 3. **Breaking Rated Current**: 3000A at 30V 4. **Operating Temperature**: - 32°C to 82°C 5. **Storage Temperature**: - 34°C to 149°C 6. **Number of Poles**: 2 7. **Protection Class**: IP67 8. **Certifications**: SAE J1627 J1171 / UL1500 9. **Color**: The black housing is made of thermoplastic. UL rated 94V0. Mounting hole (stud) size: 6 mm / 1/4 inch - 28 inches; Inch dimensions: 74×49×44 mm / 2.91 inches×1.92 inches×1.73 inches C. Usage Instructions # Working Modes 1. **Open - Circuit Protection**: When the current reaches the disconnection value, the long handle may automatically pop out and cut off the power supply. It usually trips in the case of a short - circuit. After troubleshooting, press the long handle back into place to form a circuit. 2. **Manual Power - Off**: When it is necessary to disconnect the circuit during modification, directly press the oval red button on the fuse. At this time, the long handle may automatically pop out to cut off the power supply. After the above connection, press the long handle back into place. D. Package Contents 1 circuit breaker E. Notes 1. 1 inch = 2.54 cm 2. It is recommended to measure by yourself to select an appropriate size. 3. Due to differences between different displays, the picture may not accurately reflect the actual color of the item. Thank you for your understanding.