


Blue Sea 7440 UL-489 Circuit Breaker - 5A Flat Rocker - 7440
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
Blue Sea 7440 UL-489 Circuit Breaker - 5A Flat Rocker - 74407440 UL 489 Circuit Breaker 5A Flat Rocker Suitable for use when UL 489 specifications are required (Navy, Army, or Coast Guard vessels, and other vessels covered under CFR 46). Specifications: Amperage: 5A DC Actuator Style: Flat Rocker Poles: 1 Maximum Voltage: 80V DC Circuit Breaker Type: Magnetic Hydraulic Trip Free Terminal Type: #10 32 Screw Tin Plated Brass Interrupt Capacity: 10000A
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Your Blue Sea 7440 UL-489 Circuit Breaker - 5A Flat Rocker - 7440 orders ship within 1-2 business days.
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- Standard: 3-7 business days
- Fast: 2-3 business days
- Express: 1-2 business days
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
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4.1 ★★★★★
Based on 835 reviews
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Product Reviews
★★★★★ 5
High quality and all the right connection types
This works great. I've used it for both my MAC and PC. I really love the Ethernet on the end and the HDMI connections (which modern laptops don't include at times). This is a great adaptor and highly recommend.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 14, 2026
★★★★★ 4
One complaint
Works very well and solved port issues on my X1 Carbon. My only quibble is that the C interface cable from the unit to the PC is a bit too stiff and tends to lose connection if things move about.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 5, 2025
★★★★★ 5
Perfect for my use
Works as intended. Solid build quality and works with my Windows laptop through the USB C connection. I wish the product description would clarify that the USB ports do not support video.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 15, 2026
★★★★★ 5
Good Buy
It's been more than a month it works great, no issues. Does not heat up, good material, compatible with both Mac and Windows, I have both OS laptops.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 29, 2026
★★★★★ 5
Great item!
works great. I can plug my backup into it and my printer, so I don't need to connect the printer to the internet.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 28, 2026
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