Overview

The Blue Sea Systems 1218 is a 360 Panel System combination circuit breaker panel with a 120V AC main section with 6 positions and a 12V DC main section with 19 positions. It brings AC and DC distribution together in one panel, which suits boats that need shore power circuits and a larger group of 12V house loads in the same electrical station.

This version includes an AC digital multi-function meter and a DC digital multi-function meter, along with factory-installed main and branch breakers on both sides of the panel. Overall size is 10.75 in high, 13.63 in wide, and 4.00 in deep, so it is worth checking panel depth, cable bend space, and rear access before cutting into a bulkhead or console face.

The AC side is set up with a double-pole 30A main and six 15A branch breakers. The DC side is set up with a 100A main and nineteen 15A branch breakers. For boats with a busy cabin or utility layout, that gives enough branch capacity for lighting, pumps, refrigeration, outlets, and electronics without splitting everything across separate panels.

Key features

• 120V AC and 12V DC distribution combined in one 360 panel layout
• 6 AC positions and 19 DC positions for boats with a higher branch circuit count
• Includes AC Digital Multi-Function Meter 8247 and DC Digital Multi-Function Meter 8248
• Factory-installed AC and DC buses are pre-wired to speed up panel installation
• ON-indicating LEDs are installed in all circuit positions
• Label backlighting is pre-installed for easier circuit identification in low light
• Tin-plated copper bus bars help with conductivity and corrosion resistance in marine service
• Open-frame modular construction leaves room for later changes within the 360 panel system

Compatibility and fit

This panel is built for boats with 120V AC service and a 12V DC distribution system. It fits installations where the owner or builder wants one finished panel for cabin AC loads and a broader group of DC loads instead of mixing separate breaker panels across different locations.

It is not the right match for 230V AC systems or 24V DC distribution. Before ordering, confirm the vessel voltage, the number of branch circuits needed now and later, and whether the mounting location can handle a 4.00 in panel depth plus wiring clearance behind the face panel.

Installation and setup

Because the buses are already installed and pre-wired, this panel cuts down setup work during a refit or new build. The modular 360 layout also makes sense when the electrical plan may change over time, since the panel starts with a finished structure instead of requiring a custom one-off build.

Main breaker selection still matters because AC and DC panel amperage follows the installed AC main and DC main breakers. This panel is a good fit for cruisers, sportfishing boats, and similar vessels where a single AC/DC distribution point keeps troubleshooting and service work more straightforward.

What’s included

• AC Digital Multi-Function Meter 8247
• DC Digital Multi-Function Meter 8248
• 1 double-pole 30A AC main breaker
• 6 single-pole 15A AC branch breakers
• 1 single-pole 100A DC main breaker
• 19 single-pole 15A DC branch breakers
• Basic AC label kit
• Basic DC label kit
• Panel insulating back covers
• Installation instructions and cutout template