Blue Sea 7936 Contura II Switch DPDT Black - ON-OFF-ON

The Blue Sea Systems 7936 Contura II Switch DPDT Black in ON-OFF-ON configuration is a marine-grade electrical switch engineered for the harsh saltwater environment. This double-pole, double-throw switch is built to withstand vibration, shock, thermoshock, moisture, and salt spray—the four enemies of reliable electrical systems on boats. The Contura II design mounts directly into Blue Sea Systems water-resistant panels and mounting systems, making it the go-to solution for integrating navigation lights, anchor lights, and other dual-circuit electrical loads on vessels ranging from center consoles to larger cruising boats.

Rated for 20 amps at 12V and 15 amps at 24V, this switch handles typical marine electrical demands with margin. The DPDT (double-pole, double-throw) configuration allows simultaneous switching of two independent circuits—a critical feature when combining nav lights or anchor lights that share a single bulb, or when managing redundant systems. The ON-OFF-ON action provides three discrete positions: circuit A engaged, both circuits off, and circuit B engaged. Black actuator finish integrates seamlessly with modern helm layouts and resists UV fading common in open-water environments. The compact 3 × 2 × 4-inch footprint fits standard panel cutouts without requiring panel modifications.

This switch is built for boat owners and marine technicians who demand reliability in corrosive saltwater conditions. Weekend anglers upgrading panel layouts, liveaboard cruisers managing complex electrical architectures, and commercial fishing operations all rely on Blue Sea Systems switching components because failure at sea is not an option. The modular Contura II platform ensures consistency across your entire electrical panel—mix and match switches, breakers, and indicators without compatibility concerns. Proper installation into a Blue Sea Systems water-resistant panel enclosure maximizes the switch's resistance to spray and condensation.