Feature 1, Used in protecting of car audio and video system, prevent power surges from damaging your equipment. 2, Simple and convenient to be installed on the panel or firewall. 3, Manual reset arm is easy to operate, automatic testing and manual coverage. 4, High sensitivity to provide protection in time in case of overload or short circuit current. 5, Widely use for automobile with speaker, car double battery isolator, winch and other high current when using electricity, to provide protection in case of overload or short circuit current. Features: Used in protecting of car audio and video system, prevent power surges from damaging your equipment. Simple and convenient to be installed on the panel or firewall. Manual reset arm is easy to operate, automatic testing and manual coverage. High sensitivity to provide protection in time in case of overload or short circuit current. Widely use for automobile with speaker, car double battery isolator, winch and other high current when using electricity, to provide protection in case of overload or short circuit current. Specification: Condition: Brand New Material: Metal + Plastic Color: Black shell + Gray cover Circuit Rating: 30A, 40A, 60A Operation mode: Electronic type Input voltage: 12-42 VDC Circuit break speed: normal circuit break speed Arc Extinguishing Capacity: Medium Installation: Easy to install, can be installed on any flat or wall Product function: Over current protection, overvoltage protection, current residue protection, overcharge protection Car Audio/video overload protector Automatic detection, manual recovery Operating Temperature: -32C-82C Package List: 2 * Circuit Breaker