Blue Sea Systems 7042 187 Series DC Circuit Breaker - Panel Mount, 80 Amps
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
Blue Sea Systems 7042 187 Series DC Circuit Breaker provides heavy-duty switching and circuit protection in a panel-mount design—built for marine electrical panels with ignition protection and weather resistance.
Key Features
- Single lever operation clearly visible for convenient manual switching
- Ignition protected (conforming to SAE J1171) for safe installation aboard gas-powered boats
- Weather resistant marine build
- Panel mount circuit breaker for DC power distribution protection
- 5/16-18 terminal studs for secure conductor connections
- Maximum voltage: 42 volts DC
Intended Use
- Marine DC electrical distribution (panel-mount protection)
- Gas-powered boat DC systems requiring ignition-protected breakers
- General DC switching/circuit protection for onboard auxiliary and control loads
Product Details
- Brand: Blue Sea Systems
- Series: 187 Series
- Model/Part Number: 7042
- Product Type: DC Circuit Breaker (panel mount)
- Amps: 80 Amps
- Mounting: Panel Mount
- Terminal Stud Size: 5/16-18
- Maximum Voltage: 42 volts DC
- Ignition Protection: Conforming to SAE J1171
- Design Notes: Heavy duty circuit protection when switching and circuit protection are both required
Parts Desk Insights
Best Use Case: Use this breaker as a panel-mount DC protection device where you need both manual switching and circuit protection for a defined DC feed.
Common Issues: Common install issues include using mismatched wire/terminal hardware for the 5/16-18 studs and over/under-tightening at high-torque connections—confirm terminal compatibility and follow the correct torque procedure for your installation.
Related Products & Accessories
- Browse circuit breakers and fuses for additional protection options - Use the category filters to match your required amperage and mount style.
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.