AMPERAGE: 20A, 30A, 40A, 50A, 60A, 80A, 100A, 150A. Works with 12V-24V DC. You can choose from the wide range of amperes according to your needs. SAFETY PROTECTION: Avoid excessive current, protect the electrical appliance. Self-test, the circuit breaker trips automatically when the current is overloaded. STURDY AND DURABLE: The screw inside is made of pure copper to ensure a long service life. The circuit breaker can be mounted on the panel or firewall. EASY TO USE: The circuit breaker allows you to easily connect or disconnect the circuit when needed. In addition, you don't need to spend more money to replace the fuses WIDE APPLICATION: Suitable for overload protection of car audio/video system. Also for boat, bike, bus, RV and marine --Specifications-- Amp: 20A, 30A, 40A, 50A, 60A, 80A, 100A, 150A Voltage: 12V-24V DC Size: 10x4x4cm Material: Plastic and Metal Package Included 1 * Circuit Breaker Notes There may be 2-3cm difference due to different measurement methods. Please