2027 Vancouver Boat Show
After two years away, we’re heading back to the Vancouver International Boat Show, January 27–31, 2027, bigger and better than ever, with lots of prizes to be won. Here’s what...
Blue Sea Systems 187-Series Surface Mount Circuit Breaker - 100 Amp is in stock and available for pickup within 24hrs.
Couldn't load pickup availability
✔ Locally owned in Nanaimo, BC
✔ Trusted by boaters and anglers since 1986
✔ Knowledgeable staff with real on-the-water experience
✔ Large in-stock selection of marine & fishing gear
We’re here to help you get the right gear the first time.
We ship across Canada with fast, reliable delivery from our Nanaimo location.
✔ Trusted since 1986
✔ Fast Canada-wide shipping
✔ Expert support available
Need it sooner or have questions? Our team is here to help.
We stand behind the products we sell and want you to shop with confidence.
✔ Easy returns on eligible items
✔ Manufacturer warranties supported
✔ In-store support available if you need help
Some items are non-returnable. Please review our full Return & Refund Policy before completing your purchase.
** Contact us to Order Out of Stock Items
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.
The 187-Series protects high-amperage DC electrical circuits from overloads and short circuits while also functioning as a manual reset switch.
This product is available in 100A, 120A, and 200A configurations.
Yes. The breaker is designed for marine environments and features a waterproof construction to help protect against moisture and corrosion.
Yes. The 187-Series is ignition protected and meets SAE J1171 requirements for installation aboard gasoline-powered boats.
The 187-Series includes switching capability but is primarily designed for circuit protection. Always follow Blue Sea Systems installation recommendations for your application.