Blue Sea Systems 7141 187 Series DC Circuit Breaker - Surface Mount, 70 Amps
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You have 30 days to request a return. All sale items are final sale.
When your DC system needs both switching and overcurrent protection in one rugged device, the Blue Sea Systems 7141 187 Series DC Circuit Breaker is built for the job. This surface-mount 70A breaker features clear single-lever operation and external-ignition protection for marine engine-room environments.
Key Features
- Single lever operation is clearly visible.
- Ignition protected (conforming to SAE J1171) for safer installation aboard gas-powered boats.
- Weather resistant.
- Surface-mount design for straightforward wiring and mounting.
- 5/16-18 terminal studs.
- Maximum voltage: 42 volts DC.
Intended Use
- Marine DC power distribution (battery/engine-room circuits)
- Boat electrical system circuit switching and protection
- General purpose DC switching/protection applications where a 42V DC, 70A rated ignition-protected breaker is suitable
Product Details
- Blue Sea Systems 7141 187 Series DC Circuit Breaker - Surface Mount, 70 Amps
- Circuit protection type: DC circuit breaker (switching + circuit protection in one device).
- Mounting style: Surface mount.
- Current rating: 70 Amps.
- Terminal studs: 5/16-18.
- Maximum voltage: 42 volts DC.
- Ignition protection: Conforming to SAE J1171.
Parts Desk Insights
Best Use Case: Use this 187-Series surface-mount breaker as a dedicated DC circuit switch/protection device in boat power distribution where external ignition protection is required.
Common Issues: Common install points to double-check are correct lug/wire gauge selection for the 5/16-18 studs, confirming the circuit voltage is within 42V DC maximum, and verifying the mounting surface and wiring clearance for a clean, dry, weather-resistant installation.
Related Products & Accessories
- Fuses - Browse the Fuses category to pair breaker protection with appropriate fuse protection where required.
- Electrical & Accessories - Browse Electrical & Accessories for marine-rated wiring, lugs, and related DC electrical components.
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.