Blue Sea 7937 Contura II Switch DPDT Black - (ON)-OFF-ON

The Blue Sea 7937 Contura II Switch DPDT Black - (ON)-OFF-ON is a heavy-duty electrical switch built for demanding marine environments where reliability cannot be compromised. Whether you're managing multiple electrical circuits on a center console, cabin cruiser, or offshore fishing vessel, this dual-pole, dual-throw switch delivers the rugged construction serious boaters depend on. Blue Sea Systems engineered this switch specifically for saltwater and freshwater applications where corrosion resistance and circuit control are non-negotiable.

The DPDT (dual-pole, dual-throw) configuration allows simultaneous control of two independent circuits or the ability to switch between two separate electrical loads—ideal for managing redundant systems, alternate pump circuits, or independent battery banks common on modern fishing boats and cruisers. The (ON)-OFF-ON gate positions give you three distinct switching states: circuit A engaged, both circuits off, and circuit B engaged, providing precise control without ambiguity. The black Contura II housing is molded from durable polymer that resists UV degradation and saltwater corrosion, while the switch mechanism itself is rated for heavy-duty marine-grade performance with low contact resistance and smooth, positive toggle action even after years of use.

This switch is ideal for retrofit applications on center consoles, cabin boats, or any vessel requiring secondary circuit isolation or dual-load management without adding bulky toggle banks. Installation is straightforward in standard 1⅛-inch panel cutouts, and the compact 3 x 2 x 4-inch form factor fits tight helm stations and electrical panels common on mid-size and larger recreational vessels. Anglers and cruisers who run GPS, sounder, autopilot, and auxiliary systems appreciate the clean circuit separation this switch provides—protecting critical navigation electronics from load surges on bilge pump or trim tab circuits.