When installing an aftermarket amplifier in a vehicle, it is necessary to install a protective fuse case to the car battery, which protects the electrical installation in the event of a short circuit. We offer fuse cases for various types of fuses, so always carefully select the fuse case and the corresponding fuse. Circuit breakers replace the function of the fuse case. If you need to immediately interrupt the power supply, the best solution is to use a circuit breaker. With one movement, you unlock the fuse and interrupt the power supply. In the event of a short circuit, the circuit breaker will of course trip itself.