Blue Sea Systems 7140 187 Series DC Circuit Breaker - Surface Mount, 60 Amps
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Blue Sea Systems 7140 187 Series DC Circuit Breaker (surface mount) is built for medium-duty protection on 12V/24V/42V DC systems where you need both switching and overcurrent circuit protection in a single breaker.
Key Features
- Surface-mount 187 Series breaker rated for 60 amps DC
- Single lever operation provides clearly visible ON/OFF status
- Ignition protected (conforming to SAE J1171), suitable for installation aboard gas-powered boats
- Weather resistant housing for marine environments
- 5/16-18 terminal studs for secure wiring connections
- Maximum voltage: 42 volts DC
Intended Use
- DC marine electrical systems requiring switchable circuit protection
- Auxiliary DC loads where medium-duty breaker protection and manual switching are needed
- Custom and retrofit power distribution panels and switchboard circuits (surface-mounted breaker installations)
Product Details
- Brand: Blue Sea Systems
- Series: 187 Series
- Type: DC circuit breaker (surface mount)
- Model/Part number: 7140
- Amperage rating: 60 Amps
- Switch operation: single lever with visible trip status
- Ignition protection: conforms to SAE J1171
- Terminal studs: 5/16-18
- Maximum voltage: 42 volts DC
Parts Desk Insights
Best Use Case: Use this breaker to add reliable, switchable overcurrent protection for DC circuits on a boat—especially where the installation location benefits from ignition-protected, surface-mount hardware and clearly visible lever status.
Common Issues: Common install pain points include incorrect terminal stud lug fitment, loose torque on ring terminals, and relying on an improper system voltage. Verify the circuit’s DC voltage is within the breaker’s maximum rating and confirm the stud/lug hardware you’re using matches the 5/16-18 studs before final wiring.
Related Products & Accessories
- Blue Sea Systems 187-Series Circuit Breakers (collection) - Browse the related 187-Series circuit breakers and ratings to match your circuit needs.
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.