Blue Sea Battery Cutoff Switch - m-Series

When you’re building an overland or off-road rig, there’s one thing you can’t compromise on – control over your power system. The Blue Sea Systems m-Series Mini On-Off Battery Switch is the compact, heavy-duty solution trusted by pros for years.

This little powerhouse might look small, but it’s built for serious electrical loads. Rated for continuous duty, it’s perfect for adding a master disconnect to your rig – and it works especially well for disconnecting the winch on the front of your vehicle when it’s not in use. That means no parasitic draw, no accidental spooling, and an extra layer of safety for your electrical system.

Whether you’re wiring up an auxiliary battery, isolating circuits for accessories, or simply looking for a clean way to cut power when you need to, this switch gets it done.

Key Features:

• Compact & Rugged – Fits tight spaces but handles full-size power demands.

• Perfect for Winch Disconnects – Instantly kill power to your winch for safety and security.

• Marine-Grade Durability – Corrosion-resistant materials built for extreme conditions.

• Simple On/Off Operation – One twist and your circuit is live or dead.

• Blue Sea Quality – Trusted by boaters, off-roaders, and expedition rigs worldwide.

• Continuous Rating - 300A

• Maximum Voltage - 48V

If you’re building a serious off-road setup, don’t skimp on your power control. This switch is the no-nonsense way to keep your system safe, organized, and ready for adventure.