Blue Sea Systems 7136 187 Series DC Circuit Breaker - Surface Mount, 30 Amps
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
Blue Sea Systems 7136 187 Series DC Circuit Breaker is a surface-mount thermal breaker that combines dependable circuit protection with convenient switching in one unit—ideal for protecting 12V DC and 24V DC marine/off-grid circuits up to the breaker’s 42V DC maximum voltage rating.
Key Features
- Single lever operation for clearly visible switching status
- Ignition protected (conforming to SAE J1171) for safe installation aboard gas-powered boats
- Weather resistant, designed for harsh environments
- Surface mount design for straightforward panel/plate mounting
- 5/16-18 terminal studs for secure connections
- Maximum voltage: 42 volts DC
Intended Use
- Marine DC power distribution
- Gas-powered boat electrical systems (ignition protected)
- Off-grid / RV DC circuit protection and switching
- Replace/upgrade for 187-Series surface-mount DC circuit breaker applications
Product Details
- Blue Sea Systems 7136 187 Series DC Circuit Breaker - Surface Mount, 30 Amps
- Type: DC circuit breaker (surface mount)
- Amps: 30 amps
- Single-lever operation
- Ignition protected: conforms to SAE J1171
- Weather resistant
- Terminal studs: 5/16-18
- Maximum voltage: 42 volts DC
Parts Desk Insights
Best Use Case: Use this 187-Series surface-mount DC breaker where you need a single device to both switch a circuit and provide thermal circuit protection.
Common Issues: When installing, verify the breaker’s stud size (5/16-18) matches your ring-terminal/lug hardware and check that the mounting location allows proper clearance and good cable routing. If troubleshooting tripping, confirm the load type and wiring condition before swapping components.
Related Products & Accessories
- Electrical & Accessories - Browse the Electrical & Accessories collection for compatible wiring accessories, terminals, and related protection components.
- Fuses - If your circuit design uses fuses in coordination with breakers, browse the Fuses collection.
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.