Overcurrent protection, overvoltage protection, overcharge protection, current residual protection This is 12V 24V 48V High Quality Mini Circuit Breaker , we have Optional 20A 30A 40A 50A 60A 80A 100A 125A 150A , Suitable for car audio video Home Solar system overload protection. The difference with ordinary insurance is the following three points: 1. Its sensitivity is very high, can protect circuit electrical appliances in time 2. After disconnecting and troubleshooting, it can be manually resumed and used manually. 3.It can control high current circuit 100% brand new and high qualityLeakage protection, overload protectionGood conductivity and craftsmanship, high temperature pressure Instructions for use: 1.If you need to disconnect manually, you can press the manual disconnect button, do not forcibly open the reset wrench, or it will cause the shaft to break. 2.When the power is on, the rated current is reached or close, the circuit breaker will automatically disconnect. This product uses the principle of thermal induction, so the current when disconnected is not the rated current. 3.After manual disconnection, push the reset wrench can be reset. After the automatic disconnection, and product has cooled, can push the reset wrench to reset.