Blue Sea Systems 7039 187 Series DC Circuit Breaker - Panel Mount, 50 Amps
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You have 30 days to request a return. All sale items are final sale.
Blue Sea Systems 7039 187 Series DC Circuit Breaker provides panel-mount circuit protection for DC systems—designed for both switching and protection when you need a rugged, ignition-protected breaker.
Key Features
- Single lever operation is clearly visible.
- Ignition protected (conforming to SAE J1171), safe for installation aboard gas-powered boats.
- Weather resistant.
- Panel mount design for a clean, protected installation.
- 5/16-18 terminal studs for secure connections.
- Maximum voltage rating: 42 volts DC.
- 187 Series DC circuit breaker (50A).
Intended Use
- Marine DC electrical systems (DC circuit protection and switching)
- Boat and RV DC distribution panels requiring ignition-protected breakers
- General-purpose DC switching/protection applications where a 42V DC, 50A ignition-protected breaker is appropriate
Product Details
- Brand/Series: Blue Sea Systems 187 Series
- Product type: DC circuit breaker (thermal)
- Mounting: Panel mount
- Current rating: 50 Amps (50A)
- Terminal studs: 5/16-18 terminal studs
- Ignition protection: SAE J1171 (ignition protected)
- Maximum voltage: 42 volts DC
Parts Desk Insights
Best Use Case: Use this breaker in DC distribution panels when you want one device to handle both switching and circuit protection in a weather-resistant, panel-mounted format.
Common Issues: For best results, confirm terminal stud compatibility with your ring terminals/fasteners (5/16-18). Also verify the breaker’s maximum voltage and system wiring plan during installation, and confirm the intended cover/installation method provides the ignition protection performance expected for your environment.
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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.