★★★★★ 4
Almost good
Item Package Quantity: 1
They worked kinda good
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 14, 2026
Supplementary Protector 20A, B Curve 277Vac 1P | B1E1B20
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
Supplementary Protector 20A, B Curve 277Vac 1P | B1E1B20NOARK Manual Product Details : Supplementary Protector 20A, B Curve 277Vac 1P B1E1B20 Part No: B1E1B20 Product Type: Supplementary Protector Brand: NOARK No. Of Poles: 1 Tripping Curve: B Curve (3 5 in.) Rated Current (Amps): 20A Standard Ratings: 5 kA at 480Y 277Vac and 10 kA at 240Vac. Voltage (V): 277Vac Limited Warranty: 5 Years Features: Breakers mount on standard 35 mm DIN rail Thermal magnetic over current protection three levels of protection,
Quick Dispatch:
Your Supplementary Protector 20A, B Curve 277Vac 1P | B1E1B20 orders ship within 1-2 business days.
Delivery Options:
- Standard: 3-7 business days
- Fast: 2-3 business days
- Express: 1-2 business days
Order Tracking:
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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 706 reviews
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Product Reviews
★★★★★ 5
Good quality
Item Package Quantity: 1
Works great, would by it again
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 1, 2026
★★★★★ 2
Don't waste your money.
Item Package Quantity: 1
Did not work!
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Reviewed in the United States on May 7, 2026
★★★★★ 1
Doesn't work
Item Package Quantity: 1
No effect at all on my headlights. Don't waste your money.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 30, 2026
★★★★★ 5
Well worth the money. And easy to use.
Item Package Quantity: 1
For what it cost, it worked way better than I expected. 👍
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 16, 2026
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