Blue Sea 7040 187 - Series Thermal Circuit Breaker - 60Amp

The Blue Sea 7040 187-Series Thermal Circuit Breaker – 60Amp is the marine electrical protection standard trusted by serious boaters, fishermen, and yacht captains for decades. This 60-amp panel-mount breaker combines switching capability and overload protection into a single, compact device, eliminating the need for separate components in your vessel's electrical system. Whether you're running a center console, cruiser, or multi-engine sportfisher, reliable circuit protection is non-negotiable—this breaker ensures your electrical infrastructure stays safe during high-demand operations.

Built to meet SAE J1171 external marine standards, the 187-Series design uses thermal protection technology that responds to sustained overcurrent conditions with precision and repeatability. The breaker automatically opens under fault conditions, protecting wiring, components, and battery banks from dangerous overheating and arc risk. Its integrated switching function means you can manually isolate circuits without additional disconnects, reducing panel real estate and installation complexity. The compact footprint—measuring just 5 x 2 x 8 inches and weighing only 0.5 lbs—fits seamlessly into tight panel installations while delivering the same rock-solid protection found on commercial fishing vessels and naval applications.

This 60-amp breaker is ideal for main distribution panels, thruster circuits, large pump systems, or auxiliary power feeds in vessels 30 feet and larger. Anglers running multiple electronics, livewell systems, and high-output alternators benefit from the thermal response curve that distinguishes between momentary surge (engine start) and genuine fault conditions. Installation requires standard panel cutout space and tinned marine-grade wiring terminated to the breaker lugs—Blue Sea's design philosophy ensures compatibility with both legacy and modern DC distribution systems. For anyone serious about electrical reliability on the water, the 187-Series is the proven choice.