Moeller Battery Disconnect Switch with Key

Cut Power. Protect Your Boat.

The Moeller Battery Disconnect Switch with Key gives you a reliable, single-point shutoff for your vessel’s electrical system. Whether you’re securing your boat for the season, preventing parasitic battery drain at the dock, or adding a layer of theft deterrence, this switch installs cleanly on any bulkhead and handles serious amperage without complaint.

The key-operated design means only authorized users can restore power a simple but effective safeguard for unattended vessels. The environment-proof boot on both the key and cover shields the internals from moisture, salt spray, and UV exposure, keeping the switch functioning season after season.

Key Features

• 110A continuous duty rating handles full electrical loads without overheating
• 500A surge capacity at 12V for 10 seconds withstands engine cranking loads
• Key-operated on/off control prevents unauthorized use and battery discharge
• Environment-proof boot on key and cover resists corrosion in marine environments
• Bulkhead-mount design installs cleanly on panels, consoles, or engine compartments
• Compact footprint fits standard marine switch cutouts

Compatible Applications

• Powerboats and runabouts
• Bass boats and fishing boats
• Pontoon boats
• Ski and wakeboard boats
• Trailered vessels stored seasonally
• 12V DC marine electrical systems

Parts Desk Insights

Best use case: This switch is the go-to solution for boaters who want a clean, permanent battery isolation point ideal for seasonal storage (eliminates the need to disconnect cables manually), marina slip security, and vessels with multiple electronics that draw standby power. It’s particularly well-suited for installations where a keyed lockout is preferred over a simple lever-style disconnect.

Installation note: Designed for bulkhead mounting. Ensure your wiring gauge matches the 110A continuous rating. For boats with dual-battery setups, pair with a battery selector switch for full system control.

Looking for battery storage solutions? Check out the Moeller Marine Battery Tray with Strap Series 27/30/31 or the Moeller Marine Battery Tray with Strap Group 24.