1 piece 12V battery disconnect switch, 300A battery isolator with keys, for boat, car, truck

This 12V battery disconnect switch is a reliable electrical isolator designed to protect the electrical systems of land and marine vehicles. Its key-operated mechanism ensures a complete physical disconnection of the current, eliminating any phantom power consumption when the vehicle or boat is stationary. Made with a high-performance plastic housing and solid copper terminals, it supports a continuous current rating of 300A at 12V DC, with increased thermal resistance and proven mechanical strength. Its design includes two interchangeable keys and a waterproof cover that protects the mechanism from moisture, corrosion, and splashes—an essential feature in coastal or industrial environments. Installation is quick and easy thanks to its standardized dimensions (5mm mounting hole, 8mm fixing screw). Commonly used on cars, vans, light trucks, motorboats, and mobile equipment, this isolator meets the needs of professionals and individuals concerned with reliability, safety, and compliance with French electrical best practices.