Blue Sea 1480 10/240V AC Rotary 65A OFF + 2 Sources 2x120V/1x240V

The Blue Sea 1480 10/240V AC Rotary 65A OFF + 2 Sources 2x120V/1x240V is a marine-grade shore power selector switch designed for cruising sailboats, trawlers, and larger powerboats that operate at dual voltage docks. After years on the water, any experienced boater knows that inconsistent shore power availability across different marinas demands a reliable switching solution. This rotary selector handles the complexity of managing two independent 120V AC sources and one 240V AC source, routing power to two separate 120V load groups without requiring manual circuit reconfiguration. Built by Blue Sea Systems—the trusted standard in marine electrical—this switch eliminates the guesswork when choosing between different shore power pedestals or switching between standard and high-amperage circuits.

The 1480 features a robust 65-amp rotary design with an OFF position that safely disconnects all incoming power before switching sources, preventing damaging current surges or backfeed conditions. Integrated red reverse polarity LED indicators provide instant visual confirmation of wiring faults—a critical safety feature when docking at unfamiliar marinas where shore power wiring quality varies widely. Green power-available LEDs confirm that each source is live and ready, reducing onboard troubleshooting time. The compact 10 x 6 x 13-inch footprint and modest 3-pound weight make installation straightforward in tight electrical panels, while the marine-rated construction withstands salt spray, vibration, and the thermal cycling inherent to vessel environments. The rotary mechanism delivers positive detent feedback with each selection, ensuring crew confidence during source switching underway.

This switch is indispensable for liveaboard cruisers, commercial fishing operations, and any extended-range powerboat that cannot rely on a single shore power source. Vessels equipped with 240V heating, air conditioning, or appliances benefit most, as the 1480 safely isolates legacy 120V systems from high-demand circuits. Installation requires integration into an existing AC distribution panel with proper breaker protection and marine-certified wiring; consult your vessel's electrical schematic or work with a qualified marine electrician to ensure correct phasing and grounding. Compatible with standard marine shore power connectors (NEMA L5-30, L14-30, or equivalent), the Blue Sea 1480 remains the workhorse choice for serious boaters who demand reliability in their electrical systems.