Product size: 7.4 × 4.8 × 4.5 cm Product material: plastic + metal Package contents: 1 × Circuit Breaker Packaging: OPP bag Packing size: 10 × 5 × 5 cm High-ampere thermal trip circuit breaker with manual reset switch, suitable for various electrical systems. Ideal for use in demanding environments including automotive, marine, and RV applications to provide protection against current overload or short circuits. Includes a protective rubber cap to prevent accidental short circuits. Commonly used in truck, bus, RV, and marine applications; also suitable for battery and audio systems. Surface-mount circuit breakers are frequently installed in auxiliary and accessory circuits for truck, bus, camper, and marine systems. Sealed, waterproof design rated IP67 for use in engine compartments and bilge areas. Manual trip switch allows quick circuit disconnection in emergency situations. Features M6 × 2 mounting bolts with integral locking ring to resist loosening from vibration. Specifications: Circuit rating: 30A, 40A, 50A, 60A, 70A, 80A, 90A, 100A, 120A, 140A, 150A, 200A, 250A, 300A (optional) Voltage rating: 12–48 V DC Interrupt rating: 3000 A @ 30 V Operating temperature: –32 °C to 82 °C Storage temperature: –34 °C to 149 °C Number of poles: 2 Ingress protection rating: IP67 Certifications: SAE J1627, SAE J1171, UL 1500 Housing color: Black Housing material: Thermoplastic, UL 94V-0 rated Mounting hole (stud) size: 6 mm / 1/4″–28 Dimensions: 74 × 49 × 44 mm (2.91″ × 1.92″ × 1.73″) Operation instructions: 1. Automatic circuit protection: When current reaches the trip threshold, the lever automatically trips open to cut power. This typically occurs during overloads or short circuits. After fault correction, press the lever back into position to restore the circuit. 2. Manual shutdown: To safely disconnect power during maintenance, press the red button. The lever will trip open. To restore power, press the lever back into position. Package includes: 1 × Circuit Breaker Notes: 1. 1 inch = 2.54 cm 2. Please verify dimensions before installation. 3. Screen displays may affect perceived color; actual product color may vary.