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The Blue Sea Systems 187-Series Surface Mount Circuit Breaker combines switching and circuit protection into a single compact device, making it ideal for marine, RV, off-grid, and automotive electrical systems. Available in 100A, 120A, and 200A ratings, these ignition-protected circuit breakers provide reliable overcurrent protection while allowing convenient manual switching when servicing electrical circuits.
Designed for demanding marine environments, the 187-Series features a waterproof housing, corrosion-resistant construction, and a trip-free design that cannot be held in the ON position during a fault condition. Large lever operation provides clear visual indication of breaker status, while heavy-duty terminals accept large gauge cable connections for high-current applications.
Perfect for battery banks, inverter circuits, trolling motor systems, charging systems, and high-amperage DC electrical installations.
Features
- Combines switching and circuit protection in one device
- Available in 100A, 120A, and 200A ratings
- Waterproof construction for marine environments
- Trip-free design for enhanced safety
- Ignition protected for gasoline-powered boats
- Surface mount installation
- Visual indication of breaker status
- Accepts large gauge battery and power cables
- Meets SAE J1171 ignition protection requirements
- Ideal for marine, RV, automotive, and off-grid electrical systems
Blue Sea Systems 187-Series Circuit Breaker FAQ
What is the Blue Sea 187-Series Circuit Breaker used for?
The 187-Series protects high-amperage DC electrical circuits from overloads and short circuits while also functioning as a manual reset switch.
What amperage ratings are available?
This product is available in 100A, 120A, and 200A configurations.
Is the 187-Series waterproof?
Yes. The breaker is designed for marine environments and features a waterproof construction to help protect against moisture and corrosion.
Can this breaker be used on boats with gasoline engines?
Yes. The 187-Series is ignition protected and meets SAE J1171 requirements for installation aboard gasoline-powered boats.
Can this breaker be used as a battery disconnect switch?
The 187-Series includes switching capability but is primarily designed for circuit protection. Always follow Blue Sea Systems installation recommendations for your application.