Circuit Breaker w/Cover (Resettable)
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
LNS Sea-Dog Line inline resettable circuit breaker with manual reset button and splash-proof Breaker Cover. Built for ignition-protected marine electrical distribution and designed to help protect higher-amperage accessories on 12V or 24V systems.
Key Features
- Inline resettable circuit breaker with manual reset button
- Ignition protected for installation aboard gasoline powered boats
- May be used on 12V or 24V DC systems
- Injection molded nylon and polycarbonate construction
- Stamped brass #10-32 studs with nuts
- Copper “power in” post and silver “power out” protected auxiliary post
- Includes splash proof Breaker Cover (420840)
- Complies with SAE standard J553 and SAE J1171
Intended Use
- Marine DC electrical distribution
- Protection for higher amperage accessories (based on system wiring design)
- 12V or 24V DC boat electrical systems
Product Details
- Brand: LNS (Sea-Dog Line)
- Product: Circuit Breaker w/Cover (Resettable)
- Circuit protection: Inline resettable circuit breaker with manual reset button
- Cover: Includes splash proof Breaker Cover (420840)
- Construction: Injection molded nylon and polycarbonate
- Studs: Stamped brass #10-32 studs with nuts
- Electrical connections: Copper post is the battery / “power in” post; silver post is the auxiliary / “power out” protected post
- Standards compliance: SAE J553 and SAE J1171
- SKU / variant identifier: 354-4208521
- Variant barcode (as provided): 35514425735
- Variant weight (as provided): 36 GRAMS
Parts Desk Insights
Best Use Case: Use when you need an inline, resettable marine circuit breaker (with manual reset) to protect higher-amperage accessories on 12V or 24V DC systems, especially in areas where a splash-resistant cover helps keep connections cleaner and protected.
Common Issues: If the breaker trips repeatedly, check for a short, overload, or undersized wiring/loads on the protected circuit. During installation, confirm the “power in” (copper) and “power out” (silver) posts are connected correctly and that the Breaker Cover is properly seated to help protect the studs and connections.
Related Products & Accessories
- Breaker Cover (420840) - Included with this resettable breaker; useful as a replacement if needed.
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.