Blue Sea 8689 m-Series Dual Circuit Plus 2 Panel

The Blue Sea 8689 m-Series Dual Circuit Plus 2 Panel is a twin-engine circuit protection panel that isolates the Engine circuit from the House circuit while providing 24-hour circuit protection. It is designed for boaters running twin engines who want simplified battery switch operation and independent battery discharge in a smaller footprint than the e-Series.

The panel protects electronics from the voltage sags and spikes that come with engine cranking, while allowing an emergency cross-connect between isolated battery banks if you ever need it. Adding an automatic charging relay automates charging on both batteries, and the panel comes with square format and 24-hour round labels included. Browse more options in our panels, switches, and circuit breakers category.

Key Features

• Isolates Engine and House circuits so a problem on one bank doesn't affect the other.
• Protects electronics from cranking spikes that can occur when starting the engine.
• Allows emergency bank cross-connect if one battery bank fails and you need to borrow power.
• Includes label sets, so the panel is ready to label without a separate purchase.

Frequently Asked Questions

What is this panel designed for? It's built for twin engine configurations, isolating the Engine circuit from the House circuit.

Can I still combine battery banks in an emergency? Yes, it allows an emergency cross-connect between isolated battery banks.

How is this different from Blue Sea's e-Series panel? The m-Series includes 3 push-button thermal breakers versus 4 on the e-Series, in a more compact panel.