High-current battery disconnect key for rapid power shutdown and system protection in marine, automotive, and caravan electrical setups. It helps prevent battery depletion during storage while delivering solid performance for high-current applications. - 12-48V DC compatibility with 300A continuous and 1000A intermittent rating. Two deployment options: operate as a standalone disconnect or interlock with companion units for coordinated protection. - Durable, weather-tolerant construction. All-aluminum corrosion-proof casing with a chrome exterior for long service life in outdoor power setups, urgent systems, and vehicular applications. Delivers secure high-current interruption with dependable durability. - Complete installation kit. Includes battery disconnect key, faceplate, two protective rubber terminal insulators, two 3/8-inch copper lugs, and two industrial-strength heat shrink tubes for an easy, secure installation. - Use scenarios: - Marine: protect a boat battery bank from parasitic drain during storage or away from shore power, with rapid isolation if needed. - RV or caravan: isolate the house or starter battery when parked, or coordinate protection if using multiple units with companion modules. - Outdoor/off-grid: reliable shutdown for 12-48V DC solar or auxiliary systems in weather-exposed locations, ensuring quick disconnection during faults or storage.