Blue Sea 7945 Contura III Switch SPDT - (ON)-OFF-ON - Black

The Blue Sea 7945 Contura III Switch SPDT in (ON)-OFF-ON configuration is a marine-grade electrical switch designed for demanding saltwater and offshore environments. This switch delivers reliable circuit control for critical onboard systems—from navigation lighting and bilge pumps to auxiliary power distribution—where vibration, moisture, and corrosive salt spray present constant threats to standard electrical components.

Built to withstand the thermal cycling, shock, and environmental stress of extended boating operations, the Contura III features robust construction that resists vibration, thermoshock, moisture, and salt spray corrosion. The (ON)-OFF-ON switching pattern allows independent control of two circuits or redundant operation of a single circuit—a configuration favored in safety-critical applications where dual-position activation prevents accidental engagement. The switch integrates directly into Blue Sea Systems' Contura Water Resistant Panels and Contura Switch Mounting Panels, ensuring seamless integration with modern marine electrical systems and maintaining water-resistant integrity across your panel setup.

This switch addresses the needs of both weekend boaters and serious offshore anglers who depend on reliable electrical distribution in unpredictable conditions. Coastal cruisers, fishing charter operators, and commercial marine users rely on Contura III switches for consistent performance across high-vibration engine rooms, exposed helm stations, and below-deck electrical compartments. The (ON)-OFF-ON configuration is particularly valuable for anglers managing multiple systems—trolling motor, bilge, auxiliary battery charging, or redundant navigation circuits—where separate control positions reduce the risk of unintended power loss or dual activation.

Blue Sea Systems' Contura platform represents the industry standard for waterproof marine electrical switching, combining durable toggle operation with genuine splash and moisture protection. The black finish resists UV degradation and corrosion while maintaining professional appearance in both utilitarian working vessels and finished cabin environments. Compact and modular design allows straightforward installation in new builds or retrofit upgrades without redesigning existing panel layouts.