Identify Blue Sea m-Series Battery Switches: 6004–6010 Comparison
Blue Sea's m-Series switches are compact, but their electrical functions can be very different. Some disconnect one circuit, others select between batteries, and a dual-circuit model isolates two circuits at the same time. If an RV or boat battery switch has been damaged or has an unreadable label, identify its original function and full MPN before choosing a replacement.
What kind of battery switch is installed?
Check the marked switch positionsLook for ON/OFF, 1/BOTH/2/OFF or 1/2/OFF markings. These indicate different functions, not simply different colours.
Record the complete model numberLook for the factory label, rear moulding or purchase paperwork. Blue Sea suffixes and product versions can identify a different mounting or finish.
Check the rear connectionsCount the battery and load terminals and compare the original installation wiring diagram. A dual-circuit switch may have a different terminal layout to a battery selector.
Blue Sea 6006 vs 6007 vs 6008 vs 6010
6006 — One circuit
Single-circuit ON/OFF. Best understood as a manual disconnect for one appropriately rated electrical circuit.
6007 — Four-position selector
Battery 1, BOTH, battery 2 and OFF positions. It is intended for selecting or combining battery banks in an approved installation.
6008 — Three-position selector
Battery 1, battery 2 or OFF. It does not have a BOTH position and should not be treated as the same control as a 6007.
6010 — Two isolated circuits
Dual-circuit ON/OFF action; this controls two separate circuits together instead of routing all loads through one selected battery.
Electrical safety: Check the switch's continuous and cranking ratings for the exact manufacturer part number and the intended voltage. Do not operate a battery selector in a manner that disconnects charging sources under load unless the system and switch instructions expressly permit it. Isolate power before wiring work.
m-Series model number and function reference
Use the model and position markings to narrow the options. The chart lists products available in our catalog, not a guarantee that any particular model will replace another without changes to wiring or mounting.
| Model | Function | Positions | Colour | Product |
|---|---|---|---|---|
| 6004-BSS | Key-style battery disconnect | ON/OFF | Black | View |
| 6005-BSS | Key-style battery disconnect | ON/OFF | Red | View |
| 6005200-BSS | Key-style battery disconnect | ON/OFF | Black | View |
| 6006-BSS | Single-circuit disconnect | ON/OFF | Red | View |
| 6006200-BSS | Single-circuit disconnect | ON/OFF | Black | View |
| 6007-BSS | Two-bank selector | 1 / BOTH / 2 / OFF | Red | View |
| 6007200-BSS | Two-bank selector | 1 / BOTH / 2 / OFF | Black | View |
| 6008-BSS | Two-bank selector | 1 / 2 / OFF | Red | View |
| 6008200-BSS | Two-bank selector | 1 / 2 / OFF | Black | View |
| 6010-BSS | Dual-circuit switch | ON/OFF | Red | View |
Compare exact Blue Sea switch listings
These product cards link to the manufacturer part numbers in our store. Compare the original rear terminals and manufacturer diagram when choosing a replacement.
Single-circuit ON/OFF
The 6006 family isolates one circuit. Confirm a true ON/OFF switch is needed; it cannot select among two batteries.
Battery selectors
6007 offers OFF/1/BOTH/2. The 6008 family is a three-position OFF/1/2 selector, with no BOTH connection. Both are intended for different system arrangements.
Dual-circuit disconnect
6010 is designed to switch two isolated battery circuits together while keeping them separate. It is not an ordinary single-circuit selector.
Key-style disconnect versions
6004 and 6005 numbered versions use a different keyed mounting arrangement. Confirm the exact original MPN and hole requirements rather than relying on colour or nominal current.
Battery switch identification questions
Does 6007 have the same positions as 6008?
No. The 6007 is a four-position selector with a BOTH option, while the 6008 is a three-position selector without BOTH. They should not be interchanged without evaluating the complete electrical design.
What makes the 6010 different from a 6006?
6006 isolates one circuit. 6010 operates two isolated circuits together. Compare the original circuit design and terminal layout before selecting between them.
Does a 300 A switch fit any RV or boat?
No. Amperage is only one requirement. Continuous versus cranking ratings, voltage, cable size, overcurrent protection, mounting, ignition protection and the number of circuits all need to match the application.
Other battery switches, relays and wiring references
For different Blue Sea functions, see the 6011 and 5511e switch comparison, 11001/11003 selector guide and Add-A-Battery kit reference. The RV battery compartment guide explains related fuse, relay and busbar components.
Manufacturer references: Blue Sea 6007 selector specifications, 6008 selector specifications, 6010 dual-circuit specifications, and 6006 ON/OFF specifications.
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