Blue Sea 7226 AC/DC Single Pole Magnetic World Circuit Breaker - 40AMP

The Blue Sea 7226 AC/DC Single Pole Magnetic World Circuit Breaker – 40AMP is the marine electrical system's backbone for serious boaters and anglers who demand reliable engine protection on every trip. Whether you're running offshore for tuna or anchoring in shallow coastal waters, this circuit breaker safeguards your vessel's AC and DC power distribution against dangerous overloads and short circuits. Certified to meet American Boat and Yacht Council (ABYC) standards and recognized by UL 1077, this component represents the gold standard for marine electrical safety across saltwater and freshwater applications.

This magnetic circuit breaker delivers instant protection through its dual-pole design, which means it cuts power to both the positive and negative legs of your electrical circuit simultaneously—critical for preventing arcing and ensuring complete load isolation in an emergency. The 40-amp rating handles moderate to substantial electrical loads without nuisance trips, while the magnetic mechanism responds faster than thermal-only designs when fault currents spike. Its compact footprint (3 x 2 x 5 inches) allows tight integration into cramped engine compartments and electrical panels, and the TUV and CE certifications confirm it meets international maritime safety standards for vessels operating in European waters.

Captains and experienced anglers installing new electrical systems or upgrading aging panels rely on this breaker to protect high-draw systems—navigation electronics, battery chargers, auxiliary refrigeration, and bow thruster motors. Its dual AC/DC rating eliminates the need for separate components, saving weight and installation complexity on displacement hulls and center consoles alike. The 0.2-pound unit installs easily into standard marine electrical enclosures and pairs seamlessly with Blue Sea Systems busbars and distribution blocks, making it the go-to choice for DIY retrofits and professional marine electricians building systems that will outlast the boat.