Blue Sea 7939 Contura II Switch DPDT Black - ON-ON

The Blue Sea 7939 Contura II Switch DPDT Black – ON-ON is a marine-grade electrical switch designed for serious boaters and anglers who demand reliability in both saltwater and freshwater environments. Built by Blue Sea Systems, a trusted name in the marine industry for over 40 years, this switch is ideal for managing dual battery banks or switching between different power sources on your vessel.

The Contura II design features a panel-mount configuration with tactile, sealed switching action that resists corrosion and moisture infiltration—critical in the spray, salt, and humidity of marine service. The DPDT mechanism allows simultaneous switching of two independent circuits, each with two positions (ON-ON), providing flexible control over redundant systems or isolated loads. The black finish complements modern helm aesthetics while the compact footprint fits standard marine panel cutouts without requiring extensive rewiring.

Weighing only 0.2 pounds, installation is straightforward for experienced boaters familiar with 12V or 24V DC marine systems. This switch excels in applications where redundancy matters, such as selecting between primary and auxiliary fuel pumps or toggling bilge pump circuits. Its robust design ensures dependable performance when you're far from shore.