Top Post Battery Power Cut-Off Switch 12-48V Maximum Current 300A Power Disconnect Switch Compact Top Post Battery Disconnect for Cars, Boats, Trucks 【Product Specifications】Material: Brass & ABS; Operating Voltage: DC12-48V; Rated Current: 300A; Circuit Type: Bidirectional 【Versatility】This top post battery is compatible with DC12-48V systems, providing high-precision electrical system disconnection and protection. It supports a wide range of electrical systems, including automobiles, boats, RVs, campers, trailers, trucks, ATVs, UTVs, and even battery banks and other electrical equipment. 【Durability】This switch is designed for high durability and safety. It effectively manages fluctuations in current and voltage in the electrical system, minimizing the risks of overcurrent, overheating, and short circuits. The switch itself uses brass and ABS materials, boasting extremely high durability and providing stable performance without changes even after long-term use. 【Easy Installation】It can be installed directly on the top post of the battery without the need for special tools or additional parts. The installation work is very easy to understand even for beginners, and it is also an ideal item for DIY enthusiasts. You can quickly set it up and start using it without special knowledge or skills. 【Note】This switch is compatible with 12V-48V systems, and the rated current is 300A. The current will be halved when the voltage is doubled, so please make sure that the current does not exceed the rated value according to the voltage of the battery system you are using.