High quality materials: The current circuit breaker is made of plastic and metal, with good conductivity and high resistance to temperature and pressure. The circuit breaker can be installed on a panel or a firewall and has a long service life. Safety protection function: the unique 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. What's more, 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. What You Get: 1 Pcs x Circuit Breaker. If you have any questions about the products, you can always contact us and we will provide you with the best customer service. Specification: Material: plastic and metal Amp range: 40 A Dimensions: 10 x 4 cm / 3.9 x 1.6 inch (Length x Width) Height: 4cm / 1.6 inch Net Weight: 83g / 3oz