Blue Sea 7456 UL-489 Circuit Breaker - 15A Flat Rocker

The Blue Sea 7456 UL-489 Circuit Breaker – 15A Flat Rocker is a magnetic hydraulic, trip-free circuit protection device engineered to meet UL-489 marine electrical specifications. Designed for Naval, Army, and Coast Guard vessels operating under CFR 46 regulatory requirements, this single-pole breaker provides reliable overcurrent protection in demanding maritime and offshore environments where compliance and dependability are non-negotiable.

Rated at 15 amperes AC with a maximum voltage rating of 240V AC, the 7456 delivers trip-free operation—meaning the breaker will not reset if an overload condition persists, protecting circuits from thermal cycling damage. The flat rocker actuator provides tactile feedback and visual status confirmation, while tin-plated brass terminal lugs (sized #10-32 screw) ensure corrosion resistance in salt-air exposure and reliable electrical connection in high-humidity applications. The magnetic-hydraulic mechanism responds proportionally to fault current, preventing nuisance trips from inrush transients common in marine auxiliary systems.

This breaker is specified for naval retrofit, offshore support vessels, research platforms, and any marine electrical system where UL-489 certification is mandated. The trip-free design is especially critical in unattended or remote-location installations where automatic reset could mask an underlying electrical fault. Compact dimensions (3 x 2 x 5 inches) accommodate tight panel layouts without sacrificing thermal headroom or serviceability.

For operators and technicians sourcing certified marine electrical components, the Blue Sea 7456 represents the standard marine circuit breaker solution. Its proven reliability in military and government vessel fleets makes it the reference point for offshore electrical system upgrades and new installations requiring uncompromising regulatory compliance.