Blue Sea 2722 DualBus Plus 1/4" Stud, 5 x 10-32 Screw Terminal

The Blue Sea 2722 DualBus Plus 1/4" Stud with 5 x 10-32 Screw Terminal is a marine electrical distribution block engineered for DC power systems aboard fishing vessels, cruisers, and offshore boats. This compact component consolidates both negative and positive bus functions into a single assembly, eliminating the need for separate negative and positive distribution blocks while maintaining full electrical isolation between circuits. The design combines practical space savings with the electrical redundancy that serious marine operators demand when managing multiple battery banks, chargers, and high-load accessories on the water.

The 1/4-inch stud accommodates heavy-gauge battery cable, while the five 10-32 screw terminals accept individual circuits and loads typical of modern marine electrical systems—from navigation electronics and fish finders to cabin lighting, auxiliary charging systems, and engine-start circuits. The clear polycarbonate snap-on cover meets U.S. Coast Guard and ABYC (American Boat and Yacht Council) insulation requirements, protecting terminals from corrosion and accidental contact in the salt-air and vibration-heavy environment of the wheelhouse or engine compartment. This regulatory compliance is essential for vessels operating in coastal or offshore waters where Coast Guard inspection is routine.

This bus block is built for weekend anglers upgrading from single-battery systems as well as serious offshore operators managing complex electrical architectures. Weekend fishermen use it to add a second battery or integrate a battery charger without rewiring existing circuits. Commercial and offshore vessels rely on it to organize high-current loads where a dedicated positive and negative backbone improves troubleshooting and reduces voltage drop across multiple subsystems. At 0.5 pounds and compact dimensions, it fits tight spaces behind panels or in engine compartments where real estate is limited.