Product details Description: This circuit breaker protects the amplifier from damage by overload currents or voltages. It also protects the power supply from short-circuiting and causing the battery to rupture and explode. It has an easy-to-use manual reset arm, which can be manually restored after troubleshooting. Mainly used for Car audio and Amps protection and in trucks, boats, RVs, marine, buses, etc. Specification: Product Name: Circuit Breaker Switch Product Model:20A/30A/40A/50A/60A/80A/100A/125A/150A Product Material: alloy material Product Weight: 79.8g Applicable Voltage: 12-48V Product Size: 100x42x43(mm) Product Function: overcurrent protection, overvoltage protection, current residual protection, overcharge protection Packing List:1*Breaker Switch Functions: Used for line protection. Specially designed for car audio amplifier (current fluctuating high and low), not suitable for continuous current. When the current reaches a predetermined value, the fuse can be restored to automatically disconnect the protection circuit. Resettable: Manual control circuit breaker and easy to operate with manual reset arm, can also be used as an on/off button switch for the battery. Application: Used in the solar system, battery charges, inverter, car audio video system, boat, marine, bike, RV, and DC sound amplifier system. Easy To Use: Just press the switch, the circuit automatically closes/opens. No need to remove the power cord and screw terminals, fix the power cord in place, can be installed it on the panel or firewall. High-quality Materials: 100% brand new high-quality leakage protection, overload protection, good electrical conductivity and manufacturability, high temperature, and voltage resistance.