Feature: Emergency use: This kind of circuit breaker helps you turn off the power in emergency, ensuring your security and avoiding electricity problems, you can order according to your need. Wide use: The circuit protector is suitable for trucks, cars, boats, marines and other vehicles, powering off the attachments and avoiding short circuit. Long-lasting: This marine circuit breaker is made of metal and plastic, durable and sturdy, serving you for a long time without being cracked or broken. Portable & waterproof: This circuit breaker is small and lightweight that is easy to store and carry, and it is IP67 waterproof, suitable for different weathers and environments. Manual control: You can reset the fuse and circuit manually, and you can pre the long handle to the regular position after repairing, saving strength for you. Specification: Material: plastic, metal Color: Black Size: approx. 74x49x44mm/2.91 x 1.92 x 1.73inch Rated current: 30A, 40A, 50A ,60A ,70A ,80A ,100A ,120A, 150A, 200A, 250A, 300A (optional) Rated voltage: 12-48V Work temperature: -32~+83 Waterproof: IP67 Storage temperature: -34 Installation hole: ul 94v0 How to use: 1. Open circuit protection: when the current reaches the turn-off value, the long cable will automatically disconnect and turn off the power supply. Generally it is short circuit. After repairing, pre the long handle back to its regular position. 2. Manual power-off: Disconnect the circuit and pre the red button on the fuse. And the long cable automatically open to power off the power supply. Connect as above, pre the long handle back into place. Note: There may be slight size deviations due to manual measurement, different measuring methods, and tools. The picture may not reflect the actual color of the item because of different photographing light, angles, and monitors.Packing list 1 X Circuit Breaker