Features: High Ampere thermal trip circuit breaker with manual reset switch suitable for other electrical systems. Ideal for use in harsh environments such as racing cars to provide protection against current overload or short circuits. Protective rubber cap prevents unnecessary short circuits. Commonly used in truck bus RV and marine applications; also used for battery cost and audio systems. Switchable surface mount circuit breakers are commonly found in auxiliary and accessory circuits for truck bus camper- and marine systems. Sealed waterproof unit for engine compartment and bilge areas. The trip switch manual can quickly disconnect the circuit in an emergency. Connecting bolt size-M6 x 2 nut with integral locking ring to prevent loosening due to vibration. Specifications: Circuit rating: 30A 40A 50A 60A 70A 80A 90A 100 120A 140A 150A 200A 250A 300A (optional) Voltage rating: 12-48 V Interrupt rating: 3000A @ 30 V Operating temperature: -32 ? C to 82 ? C Storage temperature: -34 ? C-149 ? C Number of poles: 2 Weather rating: IP67 Certificate: SAE J1627 J1171 / UL1500 Color: Black case is made of thermoplastic UL Rated 94V0 mounting hole (stud) size: 6mm / 1/4 inch-28 inch / inch size: 74x49x44mm / 2.91 x 1.92 x 1.73 material: plastic + metal How to use: Working method: 1.Open circuit protection: When the current reaches the disconnection value the long handle automatically pops open and cuts off the power. Generally the short-circuit situation jumps off. After the fault is removed press the long handle back to the original. Bit can form a pathway. 2.Manual power off: We need to disconnect the circuit during the modification and directly press the oval red button on the fuse. At this time the long handle automatically pops open to cut off the power. Connect it as above then press the long handle back to the original position. Package Checklist: 1 x Circuit Breaker