Blue Sea 7440 UL-489 Circuit Breaker - 5A Flat Rocker

The Blue Sea 7440 UL-489 Circuit Breaker - 5A Flat Rocker is an essential electrical protection component for any serious boater or marine electrician. After years running systems from small center consoles to larger cruising vessels, protection from catastrophic electrical failure is non-negotiable. This compact, UL-489-certified breaker sits at the heart of responsible marine electrical design, safeguarding your vessel's circuits, crew, and investment from overcurrent damage. Whether you're upgrading an aging panel or building out a new electrical system from scratch, the Blue Sea 7440 delivers the reliability that experienced offshore anglers and cruisers depend on.

The 5-amp rating makes this breaker ideal for low-current circuits—auxiliary lighting, bilge pump controls, trim systems, and navigation electronics that draw modest amperage. Its flat rocker switch design is intuitive to identify and reset, even in rough seas or dim lighting conditions, and the compact 3 x 2 x 4-inch form factor integrates seamlessly into tight panel spaces common on production boats. The UL-489 listing ensures compliance with marine electrical codes and insurance requirements, while Blue Sea Systems' proven track record means this breaker will trip reliably when needed and reset without nuisance faults. The 0.3-pound weight is negligible, making it an easy retrofit on any vessel.

Install the Blue Sea 7440 in any UL-1117 or equivalent marine circuit breaker panel where low-amperage branch circuits require individual protection. It's compatible with standard marine 12V or 24V DC systems and serves as a drop-in replacement for aging breakers in legacy panels. Experienced technicians and DIY installers appreciate its straightforward mounting and industry-standard terminal connections. For cruisers who spend extended time offshore, weekend anglers running multiple electronics, or anyone who values electrical safety as seriously as navigation, the Blue Sea 7440 is a critical component that costs pennies today versus thousands in damage prevention tomorrow.