Blue Sea Systems 7144 187 Series DC Circuit Breaker - Surface Mount, 100 Amps
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
The Blue Sea Systems 7144 187 Series DC Circuit Breaker provides dependable surface-mount circuit protection with ignition protection for use aboard gas-powered boats. Featuring a clearly visible single lever, it’s designed for DC switching and protection in harsh, weather-exposed installations.
Key Features
- Single lever operation is clearly visible for quick manual switching
- Ignition protected (conforming to SAE J1171) for installation aboard gas-powered boats
- Weather resistant for marine environments
- Surface mount design for straightforward panel/structure installation
- 5/16-18 terminal studs for secure connections
- Maximum voltage: 42 volts DC
Intended Use
- Marine DC power distribution (surface-mount breaker protection)
- Boat and off-grid DC electrical systems requiring ignition-protected switching/protection
- DC switching and overload protection for appropriate 42V DC circuits
Product Details
- Brand/Series: Blue Sea Systems 187 Series
- Model/Part Number: 7144
- Mounting: Surface Mount
- Type: DC Circuit Breaker
- Amps: 100 Amps
- Terminal studs: 5/16-18
- Maximum voltage: 42 volts DC
- Ignition protection: Conforming to SAE J1171
- Operation: Single lever (manual switching visible)
- Notes for installation: Use appropriate lug/wire connections on the 5/16-18 terminal studs and verify breaker placement on your mounting surface for a secure fit.
Parts Desk Insights
Best Use Case: Choose this breaker when you need an ignition-protected, weather-resistant DC circuit breaker for surface-mounted marine electrical protection and switching.
Common Issues: Common installation issues include using mismatched lug sizes or hardware on the 5/16-18 studs, and overlooking clearance around the breaker/panel for comfortable lever operation. Double-check wiring polarity and route conductors to avoid strain at the studs.
Related Products & Accessories
- Browse circuit breakers and fuses - Find matching breakers, fuse holders, and related electrical protection components for your DC distribution panel.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 1-3 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.