Blue Sea 8686 Dual-Battery m-Series, Dual Circuit Plus - 8686

Blue Sea 8686 Dual Battery Management Panel – m-Series Dual Circuit Plus Switch (12V/24V, 300A)

Upgrade your boat’s electrical system with the Blue Sea Systems 8686 Dual Battery Management Panel, designed for reliable power distribution and seamless battery control. Featuring the trusted m-Series Dual Circuit Plus™ battery switch, this panel efficiently manages two battery banks—keeping your engine (start) and house (auxiliary) circuits isolated while allowing easy emergency connection when needed.

Built for demanding marine environments, the Blue Sea 8686 offers 300A continuous current capacity and supports both 12V and 24V DC systems, making it ideal for a wide range of boats and off-grid applications. The intuitive switch positions—OFF, ON, COMBINE BATTERIES—provide simple operation while protecting sensitive electronics from voltage drops during engine start.

Perfect for boat owners, RV setups, and off-grid power systems, this dual battery panel ensures safety, reliability, and optimal battery performance.

Key Features:

• Dual Circuit Plus™ Functionality: The integrated m-Series 6011 switch acts as two separate switches in one. In the "ON" position, it keeps the starting and house batteries isolated, preventing cranking voltage sags from affecting sensitive electronics.

• Emergency Crossover: In the event of a flat starting battery, the "COMBINE BATTERIES" position allows you to parallel the house and engine banks to start the engine.

• Consolidated Circuit Protection: Includes a 100A C-Series flat rocker breaker for main DC protection and two 15A push-button thermal breakers for 24-hour circuits like bilge pumps or alarms.

• 24-Hour Circuit Support: Specifically designed to provide power to essential equipment that must remain active even when the main battery switch is turned off.

• Ignition Protected: This panel is SAE J1171 and UL 1500 rated, making it safe for installation in gasoline-powered engine rooms.

• Supports 12V / 24V DC systems (32V max)

• 300A continuous rating for high-power applications

• Protects electronics during engine cranking

• Compact, pre-wired panel for easy installation

• Ideal for marine, RV, and off-grid use

In The Box

• (1) m-Series 6011 Dual Circuit Plus Red Switch

• (1) 100A C-Series Flat Rocker Breaker

• (2) 15A Push-Button Reset-Only Breakers

• (1) Square Format Label Set (4218)

• (1) 24-Hour Round Label Set (4140)

• ON-indicating LEDs for all circuit positions

Applications:
Marine boats, fishing vessels, yachts, RV electrical systems, and dual-battery off-grid setups.

Why Choose Blue Sea Systems?
Known for premium marine-grade electrical components, Blue Sea Systems delivers durability, safety, and performance trusted by professionals worldwide.

Installation Tip: To fully automate your battery charging, consider adding a Blue Sea 7610 SI-ACR. This will allow both batteries to charge from a single engine alternator while keeping them isolated during discharge, eliminating the need to manually move the battery switch to combine banks for charging.

WARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.

Manufacturer : Blue Sea Systems
Manufacturer Part No : 8686
UPC : 632085086862