Blue Sea 8367 AC 30A 2-Source Rotary Switch Panel

The Blue Sea Systems 8367 is a 30A AC rotary switch panel using the 9011 two-pole selector, choosing between two 120V sources plus Off.

Two sources is the common case: shore power and a generator, with a positive Off between them. The three-source 8366 is the alternative where an inverter feed also needs selecting, and choosing between them means counting the AC sources the boat will eventually have rather than the ones it has now.

Green power-available LEDs show which incoming sources are energized and red reverse-polarity LEDs warn if a source is wrongly wired. Both readings before a transfer are what stop the boat being switched onto a dead or miswired supply.

The selector is two-pole, switching line and neutral of a single-phase 120V supply rather than the three conductors split-phase service needs. Heavy 5052 aluminum with a two-part polyurethane finish resists corrosion. Correctly sized main breakers must be installed separately, since this selects rather than protects. Explore more marine switch panels.

• Two sources plus Off: shore and generator
• The 8366 adds a third for an inverter feed
• Two-pole, for single-phase 120V not split-phase
• Power-available and polarity LEDs before transfer