High quality materials: The current circuit breaker is made of plastic and metal, with good conductivity and high temperature and pressure resistance. The circuit breaker can be installed on a panel or firewall and has a long duration of life. Safety protection function: The single reset button can also be used as a termination switch. When the current is overloaded, the circuit breaker will automatically trip to prevent excessive current and protect the device. Easy to Use: Circuit breakers allow you to easily connect or disconnect electrical circuits when needed. Plus, you don't need to spend more money to replace the fuse. Application scenarios: Suitable for car audio, video system overload protection, but also for boats, bicycles, buses, RVs and ships. Size: 20A Specification: Material: plastic and metal Amp range: 20 A Dimensions: 10 x 4 cm / 3.9 x 1.6 inches (length x width) Height: 4 cm / 1.6 inches Net weight: 83 g / 3 oz