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Miniature Circuit Breaker 30A, C Curve 480Y/277Vac 3P | B1H3C30
Miniature Circuit Breaker 30A, C Curve 480Y/277Vac 3P | B1H3C30
Miniature Circuit Breaker 30A, C Curve 480Y/277Vac 3P | B1H3C30
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Miniature Circuit Breaker 30A, C Curve 480Y/277Vac 3P | B1H3C30

Marsoni M251S
Sale price$102.53
Pay 4 payments of $25.63 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
Miniature Circuit Breaker 30A, C Curve 480Y/277Vac 3P | B1H3C30NOARK Manual Product Details : Miniature Circuit Breaker 30A, C Curve 480Y 277Vac 3P B1H3C30 Part No: B1H3C30 Product Type: Miniature Circuit Breaker Brand: NOARK No. Of Poles: 3 Tripping Curve: C Curve (5 10 in.) Rated Current (Amps): 30A Standard Ratings: 10 kA at 480Y 277Vac and 10 kA at 125Vdc Voltage (V): 480Y 277Vac Termination Type: Box Lug Min Max Wire AWG Size: 18 4 Limited Warranty: 5 Years Features: Breakers mount on standard 35 mm DIN rail
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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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4.3 ★★★★★
Based on 1819 reviews
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Verified Purchase
Felix
Houston, US
★★★★★ 5
Easy to install for clean under-desk mounting
Fits my Dell WD19TB dock perfectly. Great for under-desk mounting (just be careful if your desk surface isn't super thick - you may not want to tighten the screws all the way)
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 11, 2025
J
Verified Purchase
Jason Holmes
Carnegie, US
★★★★★ 5
Space Saver
Perfect fit and easy install. Made more space for my desk within minutes.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 5, 2025
A
Verified Purchase
Amazon Customer
Lowell, US
★★★★★ 4
Overall great
I LOVE IT. omg exactly what I was looking for. Easy to set up. The only issue is you have to bend over/kneel to set it up and in the process I got an upset stomach, which is why deducted one star. So if you have bowel issues like me, you might want to consider that with this product.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 3, 2026
A
Verified Purchase
Anthony Armenta
Natrona Heights, US
★★★★★ 5
right size for your dock.
Fit perfectly. Everything is nice and neat.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 14, 2025
J
Verified Purchase
Justin B.
Lexington, US
★★★★★ 5
Sturdy, worked well
Holds it sturdy
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 21, 2025

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