Overview

The Blue Sea Systems 1505 is a 120V AC distribution panel with one 30A main breaker, six 15A branch breakers, and an integrated M2 AC multimeter. It gives you a single control point for bringing shore power into the boat and splitting it out to individual AC circuits from one panel face.

The front panel uses flat rocker breakers, green ON indicator LEDs, backlit label positions, and a red reverse polarity LED. Overall size is 10.75 x 4.88 x 4 in, which is useful to confirm before replacing an existing panel or planning a new install in a tight electrical locker, cabin bulkhead, or nav station.

This panel suits boats running a straightforward 120V AC system where the owner wants a clear, organized way to switch and protect several onboard circuits while keeping AC monitoring in the same panel area.

Key features

• 120V AC panel layout with one 30A main breaker and six 15A branch circuit breakers
• Integrated M2 AC multimeter for panel-level monitoring of AC voltage, current, and frequency
• Red reverse polarity LED for quick indication of shore power wiring faults
• Green ON indicator LEDs make it easier to see which branch circuits are energized
• Backlit label positions help keep circuit identification readable in low light
• A-Series flat rocker breakers combine switching and circuit protection in each position
• Compact 10.75 x 4.88 x 4 in form factor fits many cabin and helm electrical panel locations

Compatibility and fit

This panel is meant for 120V AC applications, so it fits boats with a single 120V shore power feed rather than a larger split-phase setup. It works well when you need one main disconnect and protection for up to six branch circuits such as receptacles, battery charger supply, water heater feed, galley loads, or other dedicated AC runs that already match the boat's wiring plan.

Before ordering, check both the face area and the space behind the mounting surface. The panel depth is about 4 in, and you will also need room for wire routing, terminations, and service access.

Electrical and system integration

The built-in M2 AC multimeter adds real value when you want to see what is happening on the AC side without adding a separate display elsewhere on the boat. It gives the operator a quick read on incoming voltage and frequency and helps track AC load at the panel, which is useful after connecting shore power or when larger onboard loads are running.

The breaker layout keeps day-to-day switching simple. With the main breaker and six branch positions on one panel, it is easier to isolate a circuit for service, shut down selected loads at the dock, or bring circuits online one at a time after connecting shore power.

Installation and setup

This model makes sense for cruising boats, fishing boats, and sailboats that need a clean 120V AC distribution point in an interior location that is easy to reach and easy to read. The 360 panel format is also useful in refit work where the electrical system is being reorganized around a modular panel layout.

As with any AC panel, installation should match the boat's wiring plan, shore power inlet arrangement, breaker sizing, and onboard load schedule. Confirm the branch count, breaker ratings, and available mounting depth before replacing another panel or building a new AC distribution section.