Blue Sea's M & E series battery selector switches allow for a quick and easy way to turn off a car's electrical power for storage and transportation to prevent discharging the car's batteries, or from damaging any electronics from welding. They are also used as a quick emergency power cut off in case of an accident to prevent electrical fires.

• Make-before-break contact design allows switching between battery banks without power interruption
• Ignition protected—safe for installation aboard gasoline powered boats & cars
• Case design allows surface or rear panel mounting
• Single circuit on-off switch for single battery banks
• Dual circuit on-off switch for positive & negative terminals for a single battery bank or for dual isolated battery banks
• 4-way switches for connecting two batteries for a single battery bank

Cole Hersee's M-750 Series battery selector is a four way switch that is designed to be used with two batteries. The four way selector allows you to choose between; Both Batteries OFF, Battery 1 ON, Battery 2 ON, Batteries 1 & 2 ON. The selector was designed to meet the Coast Guard's requirements for applications which allows it to be vapor proof, weatherproof, dust proof, and corrosion resistant. It can run 310 Amps continuously, 500 Amps intermittently, and between 6-36 volts.

Your standard single circuit battery master disconnect. This durable steel housing switch allows for easy mounting with a fabricated bracket or on a vehicle's sheet metal body allowing it to be easily accessed from outside of the vehicle.

Hella's keyed master disconnect functions like other single circuit battery disconnects but features a removable steel key handle. This key allows for a greater level of security for your vehicle when storing it or when leaving it unattended in your pit or camp. The max continuous load is 100 amps with a max cranking load of 5000 amps at 12 volts.