Blue Sea 7463 UL-489 Circuit Breaker - 20A Flat Rocker

The Blue Sea 7463 UL-489 Circuit Breaker – 20A Flat Rocker is a magnetic hydraulic trip-free breaker engineered for marine electrical systems operating under strict federal compliance standards. This 20-ampere breaker is rated for 240V AC applications and features a 2-pole configuration with a flat rocker actuator, making it the specified choice for Navy, Army, and Coast Guard vessel installations as well as commercial vessels operating under CFR 46 regulations.

The magnetic hydraulic design provides reliable overcurrent protection through thermal and magnetic trip mechanisms, ensuring that electrical faults are interrupted before damage to downstream systems occurs. The 35 in-lb terminal stud torque specification ensures secure connection to marine-grade electrical busses, critical in salt-air and high-vibration environments where connection integrity directly impacts system safety. As a trip-free breaker, this unit cannot be held in the ON position if a fault condition exists—a non-negotiable safety feature for vessel applications where unintended system energization creates collision and fire hazards.

This breaker addresses the specialized requirements of marine electrical engineers, vessel maintenance personnel, and military contractors who operate under UL-489 compliance mandates. Whether upgrading existing systems aboard Navy vessels, outfitting Coast Guard patrol craft, or repairing commercial offshore platforms, the Blue Sea 7463 delivers the regulatory compliance, mechanical reliability, and electrical performance demanded in mission-critical marine environments where circuit protection failures carry operational and life-safety consequences.

Blue Sea Systems is recognized within the marine industry for manufacturing electrical components that meet or exceed military specifications, making their products standard equipment aboard government and commercial vessels worldwide.