Blue Sea 7036 187 - Series Thermal Circuit Breaker - 30Amp

The Blue Sea 7036 187-Series Thermal Circuit Breaker 30Amp is the marine-grade electrical protection every serious boater needs in their vessel's electrical system. After years running offshore and navigating unpredictable conditions on the water, you learn that a single electrical failure can strand you miles from shore—or worse. This panel-mount thermal circuit breaker combines switching and circuit protection into one compact device, eliminating the need for separate components and reducing potential points of failure in your boat's power distribution system. Whether you're upgrading a fishing rig, cruiser, or commercial watercraft, this 30-amp unit is the dependable foundation of safe, reliable onboard power management.

Built to the rigorous SAE J1171 external standard, the Blue Sea 7036 delivers thermal protection that responds instantly to overcurrent conditions without requiring manual reset or replacement of cartridge fuses. The integrated switching function lets you control high-amperage loads—running lights, pumps, thrusters, battery chargers—from a single point, simplifying your electrical architecture and improving troubleshooting efficiency. Its compact 5 x 2 x 8-inch footprint and lightweight 0.45-pound profile make it easy to integrate into crowded panel layouts, while the thermal design responds dynamically to temperature and load conditions rather than simply tripping at a fixed current threshold. This makes it ideal for applications where brief inrush currents or seasonal temperature swings occur—precisely the environment encountered in marine duty.

Boaters upgrading from fused systems or adding new circuits for auxiliary equipment will find the 7036 an intelligent choice for 30-amp loads: VHF radios, windlasses, and cabin distribution panels all benefit from its fast, reliable protection. Installation is straightforward on any marine panel accepting standard DIN rail or bolt-down mounting hardware. Verify your panel space and amperage requirements before ordering—this 30-amp breaker is sized for dedicated circuits, not main battery protection. Pair it with marine-grade wiring and appropriate bus bars, and you've built an electrical backbone that will perform reliably whether you're running shallow creeks or crossing open water.