Blue Sea 6007 m-Series Mini Battery Switch Selector Four Position Red – 300 Amp 2-Batteries.

M-Series Selector Battery Switch (Mini) switches battery bank 1 or battery bank 2 or BOTH to a single load using one switch. Features make-before-break design. Rated for 300 amps, 500 intermittent, 1500 cranking.

Blue Sea 6007 has 2 inputs and 1 output. PLUS, it has the built-in capability to parallel both outputs. Its called a 1-2-BOTH switch (and of course it has an OFF position)

This would commonly be used on a boat with two batteries: a start and a house. It would normally be used when you do not have an Automatic Charging Relay installed and prefer to manually control which battery is charged by your engines alternator.

• Type:SPDT.
• Positions: 4 (1/2/BOTH/OFF).
• Inputs:2.
• Outputs:1.
• Batt Combine:Yes.
• Continuous Current Rating:300A.
• Intermittent Current Rating:500A.
• Cranking Current Rating (30s):900A.
• Stud Size:3/8.