Blue Sea 7066 ATO/ATC-Style Low Profile Circuit Breaker, 20A, Yellow, 2/pk
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You have 30 days to request a return. All sale items are final sale.
Upgrade an ATO/ATC blade-style fuse circuit with a manually resettable Blue Sea Systems 7066 circuit breaker. Designed in a low-profile form factor and built for marine circuit-protection requirements, it resets with a push button instead of replacing a fuse.
Key Features
- Manually resettable circuit breaker—swap out ATO/ATC blade-style fuses without needing to replace the protection element
- Manual push button reset complies with ABYC circuit protection requirements
- Low-profile design for a clean fit in ATO/ATC-style blade fuse spaces
- Compatible with Water-Resistant ST-Blade Fuse Block when the fuse block cover is secured
- Also compatible with other ST-Blade Fuse Blocks without the cover
Intended Use
- 12V/24V DC marine electrical distribution circuits that use ATO/ATC blade-style fuse form factors
- Replacement/upgrade for circuits previously protected by ATO or ATC blade fuses
- Use in ST-Blade Fuse Block installations (with or without the water-resistant cover, depending on your fuse block model)
Product Details
- Brand/Series: Blue Sea Systems 7066
- Part number/SKU: 661-7066
- Circuit breaker type: ATO/ATC-style low profile circuit breaker (manual reset)
- Amperage rating: 20A
- Color: Yellow
- Pack size: 2/pk
- Barcode on variant provided as a numeric string (stored internally in listing data; not rendered in customer-facing copy).
Parts Desk Insights
Best Use Case: Best for DC accessory circuits where you want repeatable overcurrent protection without swapping fuses after a fault—just press to reset after the issue is corrected.
Common Issues: If it won’t seat properly, double-check that you have the correct ST-Blade Fuse Block type for the breaker’s blade format. For water-resistant fuse blocks, ensure the cover is secured when installing the breaker.
Related Products & Accessories
- Fuse Blocks & Holders (ST-Blade series) - Pair this breaker with the matching ST-Blade Fuse Block option for your panel layout and cover type.
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.