This is a circuit breaker specifically designed for vehicles and vessels. It comes with an automatic circuit-breaking protection function and is a resettable circuit switch fuse holder circuit protector. It is made of zinc alloy, which is solid and durable, enabling it to work stably for a long time in the complex usage environments of vehicles and vessels. The product features a compact design with dimensions of 74*49*44 (mm), taking up little space and facilitating installation in the limited spaces of vehicles and vessels. The circuit breaker has a wide range of applications. It has a voltage range of 12 - 48 (V), a power of 10 (W), and is suitable for all vehicle models, meeting the circuit protection needs of different vehicles and vessels. Moreover, it has a signal-to-noise ratio of 10 (dB), effectively ensuring the stable transmission of circuit signals. It weighs only 0.087 kg, being light and convenient without adding extra burden to vehicles and vessels. There is a wide variety of specifications available, including 20A, 30A, 40A, 50A, 60A, 70A, 80A, 100A, 120A, 135A, 150A, 200A, 250A, and 300A, which can be adapted to the circuit systems of vehicles and vessels with different power requirements. This product is sold in regions such as Africa, Europe, South America, Southeast Asia, North America, Northeast Asia, and the Middle East. It also has an authorized self-owned brand, guaranteeing reliable quality. Whether for daily car trips or travels on yachts and RVs, it can provide reliable protection for the circuit systems of your vehicles and vessels.