1Manual Reset Circuit Breaker: Car audio inline circuit breaker with red manual reset button, compatible with all 12?24V audio amplifier systems. 22 Working Mode: There are two modes of current overload disconnection and manual disconnection. After the circuit is repaired, the switch is opened and the fuse holder can be used again. 3High Current Protection: The circuit breaker protects the electronic safety of the car at all times and prevents the high current of the car from damaging the electronic equipment of the car. 4Packge Included: 2Pcs circuit breaker with fuse holder, 4Pcs battery lug, 4Pcs heat shrink tube, 4Pcs screw, 1Pcs hex wrench. Easy to install and safe to use. 5Wide Application: Typically used in solar systems, battery charging, inverters, car audio video systems, boat, bikes, Rv and Dc audio amplifier systems.