This item is made of to prevent excessive current, protect the electrical appliance. It works with voltage of 12v DC. and can stops from damaging your amps. The unique push button reset can also be used as a Kill . Features - - Material: Metal and Plastic. - Size: Approx. 8 * 5.2 * 4 cm/ 3 * 2.05 * 1.6 inch (L*W*H). - Working voltage (V) : minimum 5VDC, highest 50VDC. - Current: 100A. - Stops from Damaging Your Amps. - Mount on Panel or Firewall. - Unique Push Button Reset can also be used as a Kill . - High Tech water resistant housing. - Prevent excessive current, protect the electrical appliance. - Use scope: commonly used in the automobile industry, demo products, winch, dc power supply equipment, electric vehicles, chargers, motors and other electrical products over-current protection situations. - Open circuit protection: when the current gets to the cut off value, long handles automatically , cut-off power supply, skips is generally short circuit conditions, such as troubleshooting. After the long with by - Manual powers: we need to disconnect the circuit when converted, the insurance directly to the oval red button pressed, the long with automatic , cut-off power supply. Put the long handle back in place as it is above. - Method of use: 1). the connection in (BAT) lane. OUT (AUX). 2). press the oval button, the long handle is unlocked. The breaker is off. (make sure to press the oval button, if you use the handle directly with the handle, the breaker is broken and there is no .) 3). after the laborious process of the flick is reset, the circuit breaker is energized. Package list: 1 * Waterproof 100 Amp Manual Reset Circuit Breaker 12V Car SUV Marine Boat