Blue Sea Rotary Switch 240VAC 65 Amp Off + 2 Position

The Blue Sea Rotary Switch 240VAC 65 Amp Off + 2 Position is a compact AC source selector engineered for marine, RV, industrial, and backup power applications where multiple 120/240-volt AC sources must be safely routed to a single load circuit. This rotary switch eliminates the need for complex changeover logic by providing a simple, intuitive mechanism to isolate and select between two independent AC power feeds—ideal when shore power, generators, or solar inverters must be switched without simultaneous connection. Built by Blue Sea Systems, a recognized leader in electrical distribution and marine power management, this selector is trusted by system integrators and facility managers who demand reliability in mission-critical switching scenarios.

Rated for 65 amps at 240VAC, the rotary switch architecture ensures positive OFF isolation between selections, preventing accidental parallel connection of incompatible or out-of-phase AC sources—a critical safety feature in dual-source installations. The switch handles the full 65-amp load capacity across both 120 and 240-volt configurations, making it suitable for substantial loads including HVAC systems, water heaters, and industrial equipment. Its compact footprint minimizes panel real estate while maintaining robust brass-contact construction and smooth rotary positioning, and because protection is typically provided by external circuit breakers or fuses, this switch focuses purely on source selection without redundant overcurrent elements. The 1.41-pound unit integrates easily into existing electrical enclosures, cabinets, and control panels.

Marine technicians, RV system builders, and standby power installers rely on this switch to manage generator-to-shore-power transitions, solar inverter changeover, or dual-utility source selection with confidence. Installation requires only that external overcurrent protection be sized for the 65-amp rating and that both AC sources be de-energized before switching connections. This rotary switch pairs well with Blue Sea Systems panel breakers, bus bars, and distribution blocks to create a complete, coordinated power management solution. For applications demanding manual source selection with positive OFF isolation, the Blue Sea Rotary Switch 240VAC 65 Amp model 9019-BSS delivers proven, no-nonsense performance.