Blue Sea 7442 UL-489 Circuit Breaker - 15A Flat Rocker

The Blue Sea 7442 UL-489 Circuit Breaker - 15A Flat Rocker is purpose-built for military and maritime electrical systems requiring strict compliance with federal vessel regulations. Designed for Navy, Army, and Coast Guard vessels—as well as any watercraft falling under Code of Federal Regulations Title 46—this circuit breaker meets UL-489 specifications that govern branch circuit protection in marine environments. If you operate or maintain government vessels, commercial marine platforms, or tactical equipment requiring certified electrical safety, this component is essential for code compliance and system reliability.

The 15-ampere DC rating handles moderate electrical loads in 12V or 24V marine DC systems common to military craft and tactical installations. The flat rocker actuator provides positive tactile feedback and positive off positioning—critical in harsh marine environments where accidental reconnection after a fault must be prevented. UL-489 certification ensures this breaker meets rigorous testing standards for arc containment, thermal stability, and interrupting capacity, meaning it reliably isolates circuits during overcurrent events without nuisance trips or dangerous arcing. The compact footprint (2 x 2 x 3 inches, weighing just 0.25 lbs) integrates seamlessly into space-constrained panel layouts aboard ship or in remote tactical installations.

Maritime electricians, naval engineers, and vessel maintenance crews rely on Blue Sea Systems products for their proven durability in saltwater and high-vibration environments. This breaker suits retrofit upgrades, new-build marine electrical systems, and field repairs where federal compliance cannot be waived. Installation requires standard DIN-rail mounting in approved electrical panels; verify DC polarity before connecting to ensure correct trip characteristics. For operators maintaining military or commercial vessels, inventory this certified component as a critical spare for emergency electrical repairs.