300A Battery Disconnect Switch, 12V-48V Heavy Duty 4-Position Marine Battery Cut Off Switch, Waterproof Ignition Protected Battery Kill Shut Off Switch for Car Boat RV Truck ATV

This Heavy Duty Battery Disconnect Switch is a reliable and versatile solution for managing power in a wide range of vehicles and vessels. Rated at 300A continuous, 500A for 5 minutes, and 900A for 30 seconds, this single-circuit switch is built to handle demanding electrical loads with ease. Compatible with 12V to 48V DC systems, it works seamlessly with cars, boats, RVs, trucks, ATVs, and more. The ignition-protected design ensures safe operation in marine and automotive environments, while the waterproof construction provides durability against the elements. The simple rotary ON/OFF dial makes it easy to connect or disconnect your battery in seconds, helping to prevent battery drain and protect your vehicle's electrical system when not in use. Mounting hardware is included for a straightforward installation. Whether you're securing a boat at the dock or storing a vehicle long-term, this battery kill switch delivers dependable performance and peace of mind.

• 4-Position Battery Cut Off Switch: Manage your electrical system with 1 / BOTH / 2 / OFF operation. Select Battery 1 or Battery 2 independently, combine both batteries for maximum power output, or completely disconnect power to prevent battery drain. An ideal battery selector switch for boats, RVs, trucks, campers, and off-grid systems.
• Power Switching Without Interruption: Designed with a make-before-break mechanism, this battery disconnect switch maintains uninterrupted power when switching between Battery 1, Battery 2, and BOTH, protecting electronics from sudden power loss. OFF mode completely isolates batteries for safe storage and maintenance.
• Heavy Duty Battery Disconnect Switch: Built for demanding electrical systems with 300A continuous current capacity and support for 12V-48V DC applications. Premium tinned copper terminals deliver excellent conductivity while reducing resistance and heat generation for long-lasting performance.
• Ignition Protected Marine Battery Switch: Constructed from reinforced ABS housing with corrosion-resistant tinned copper studs, this battery kill switch achieves IP68 waterproof protection and meets ISO 8846 marine ignition protection standards, ensuring reliable operation in marine, automotive, and outdoor environments.
• Easy Installation & Universal Compatibility: Supports multiple mounting methods including surface, front panel, and rear panel installation. The 3/8"-16 terminals accept up to 2/0 AWG cables, making this battery isolator switch perfect for boats, yachts, RVs, campers, trucks, trailers, ATVs, UTVs, golf carts, and battery banks.