Blue Sea 187-Series 135 Amp Circuit Breaker Surface Mount

The Blue Sea 187-Series 135 Amp Circuit Breaker Surface Mount combines electrical protection and switching functionality into a single, reliable device for marine electrical systems. Designed for serious boaters and anglers who depend on consistent power management, this circuit breaker handles the demanding conditions found aboard fishing boats, cruisers, and offshore vessels. Whether you're running trolling motors, fish finders, navigation systems, or auxiliary loads, this breaker protects your investment while ensuring safe, uninterrupted operation on the water.

This surface-mount breaker features a "trip free" design that prevents the lever from being held in the ON position during a fault condition—a critical safety feature that eliminates dangerous workarounds and ensures the device responds automatically to overcurrent events. The single-lever operation delivers intuitive, clear switching that's instantly recognizable even in rough seas or low-light conditions, and the 135-amp rating accommodates substantial power draws typical of modern marine installations. Blue Sea Systems engineered this breaker to withstand saltwater corrosion, vibration, and thermal cycling, delivering reliability that anglers and boaters have trusted for decades.

Ideal for main bus protection, dedicated circuit loads, or high-amperage subsystems, the Blue Sea 187-Series 135 Amp Circuit Breaker mounts directly to bulkheads or panels, simplifying installation and maximizing enclosure space. Anglers deploying multiple electronics—from deep-drop sounder packages to electric anchor winches—benefit from the breaker's ability to isolate circuits quickly and safely. This model pairs seamlessly with Blue Sea Systems fuse panels, battery banks, and marine-grade wiring, making it a standard choice for both new builds and system upgrades where professional-grade circuit protection is non-negotiable.