Blue Sea 7229 AC / DC Single Pole Magnetic World Circuit Breaker - 50 Amp

The Blue Sea 7229 AC / DC Single Pole Magnetic World Circuit Breaker — 50 Amp is the marine-grade electrical protection system serious anglers and cruising boaters depend on to safeguard their vessel's power distribution. Whether you're running a center console, trawler, or extended offshore platform, this compact breaker isolates high-amperage circuits from accidental overloads, short circuits, and fault conditions that can disable electronics, damage wiring, or create fire hazards. Engineered to meet American Boat and Yacht Council (ABYC) standards, it's the choice of captains who understand that reliable circuit protection keeps both crew and equipment safe on the water.

This single-pole magnetic breaker operates on both AC and DC power supplies, making it versatile across dual-voltage marine electrical systems common in modern boats. The 50-amp rating handles high-draw loads such as bow thrusters, electric windlasses, large refrigeration units, and multiple battery chargers without nuisance trips. Blue Sea's magnetic trip mechanism responds instantly to fault currents, providing faster protection than thermal designs—critical in confined engine rooms where heat buildup can mask dangerous conditions. UL 1077 recognition, TUV certification, and CE/CSA markings confirm compliance with international marine safety standards, ensuring your installation meets insurance and regulatory requirements in U.S. waters and beyond.

Skippers upgrading electrical systems or adding auxiliary power circuits will find this breaker ideal for panel-mount installation in engine compartments, battery boxes, or electrical distribution centers. Its compact footprint (3 × 1 × 4 inches) and featherweight design (0.2 lbs) simplify retrofitting into tight spaces without requiring major rewiring. The manual reset lever provides hands-on control and clear status indication—if a breaker trips, you'll immediately know which circuit needs attention before troubleshooting. Pair it with Blue Sea bus bars and marine-rated conductors for a code-compliant power backbone that handles years of salt spray, vibration, and continuous duty cycle typical of serious fishing and cruising vessels.