Dependable Battery Safety - Engineered for 300A loads, this battery disconnect key provides fail-safe protection by cutting off main battery power. - Ideal for boats and caravans; stops parasitic drain during inactivity, preserving battery health while allowing urgent system shutdown when needed. Versatile Compatibility - Handles extreme electrical loads: 300A sustained and up to 1000A at 12-48V DC networks. - Interlock-ready mechanism supports single-unit use or synchronized multi-key operation for multiple circuits. Enduring Material - Aluminum enclosure with a reflective chrome finish resists rust and corrosion. - Weather-tolerant design built to withstand demanding environments, ensuring reliable performance for battery systems. Complete Installation Kit - Includes key, faceplate, 2 rubber terminal insulators, 2 copper 3/8-inch lugs, and 2 heavy-duty heat shrink tubes. - Provides proper insulation and dependable high-current connections straight out of the box. Use scenarios - Boat systems: isolate the house battery when the vessel is moored for extended periods, preventing discharge while keeping emergency shutdown ready. - RV and caravan storage: disconnect main battery during long-term idle to reduce drain and extend battery life. - Off-grid or solar setups: use for safe maintenance shutdowns or fault isolation, protecting battery bank during servicing.