SKU: 55288802466

A4BY4000 -Gould Mersen Ferraz Shawmut 4000A 600V AC Class L Time Delay Current Limiting Fuse

Sale price$359.10 Regular price$399.00
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Description

A4BY4000 -Gould Mersen Ferraz Shawmut 4000A 600V AC Class L Time Delay Current Limiting FuseProduct Title Mersen A4BY4000 4000A 600V AC Class L Time Delay Current Limiting Fuse Product Description The Mersen A4BY4000 is a 4000 Amp, 600V AC Class L time delay current limiting fuse engineered for high demand industrial and commercial electrical protection. Its 4 second minimum time delay allows temporary overloads without interrupting normal operation, while the current limiting design reduces damage during short circuit events. This fuse

Product Title

Mersen A4BY4000 – 4000A 600V AC Class L Time-Delay Current-Limiting Fuse


Product Description

The Mersen A4BY4000 is a 4000 Amp, 600V AC Class L time-delay current-limiting fuse engineered for high-demand industrial and commercial electrical protection. Its 4-second minimum time delay allows temporary overloads without interrupting normal operation, while the current-limiting design reduces damage during short-circuit events.

This fuse features blade mounting for secure installation, a durable glass melamine body, and plated terminals for long-lasting performance in harsh environments. The A4BY4000 is UL and CSA certified, with a 200,000 AIC AC interrupting rating and 100,000 AIC DC interrupting rating, ensuring reliable protection in both AC and DC circuits. Its unique dimensions prevent replacement with other fuse types, maintaining safety and correct application.


Key Features

  • Amperage: 4000A

  • Voltage: 600V AC / 300V DC

  • Type: Class L Time-Delay Current-Limiting Fuse

  • Time Delay: Minimum 4 seconds

  • Mounting Type: Blade

  • AC Interrupting Rating: 200,000 AIC

  • DC Interrupting Rating: 100,000 AIC

  • UL Listed: UL 248-10

  • CSA Certified: C22.2 No. 248.10

  • Durable Construction: Glass melamine body with plated terminals

  • Prevents incorrect fuse replacement


Technical Specifications

  • Manufacturer: Mersen (Ferraz Shawmut)

  • Catalog Number / Part Number: A4BY4000

  • Fuse Class: L

  • Barrels: 1

  • Family / Series: AKR / A4BY

  • Diameter: 5.75 in

  • Weight: 30 lbs


Product Data

  • UPC: 782001939298

  • GTIN: 00782001939298

  • Provides reliable short-circuit and overload protection

  • Ideal for industrial power distribution, switchgear, and high-demand applications

  • Designed for safe, correct installation in Class L fuse holders

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 55288802466

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Elite Mobile Yacht Services LLC
San Leandro, US
★★★★★ 5
Quality
Size: Medium, Color: Navy Blue
I was completely satisfied with the quality of the fit, workmanship. Great price point and promptly ordered another one in a different color
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 31, 2026
M
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Mrs. G
Chelsea, US
★★★★★ 3
Way too big
Size: XX-Large, Color: Light Gray
Can't really speak to the quality of the suit as it was only tried on, but the look was nice enough. Purchased based on measurements and sizing guide and it was huge. Probably could have gone 2 sizes down but didn't have time to reorder in a different size so just returned. Ordered XXL for son who is 6ft and 220lbs. He wears a large to XL in most tops and a 33x34 in most jeans. Many reviews advised to size up. He was drowning in the XXL. Color was nice light gray.
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Reviewed in the United States on April 26, 2026
M
Verified Purchase
Micah Poet
Bozeman, US
★★★★★ 5
I sized down
Size: Large, Color: Navy Blue
This suit fit very well! And looks very sharp. It looks great with or without the jacket. I had to size down from my normal large to a medium, but as someone who’s skinny tall, I’ve always wavered between medium and large.
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Reviewed in the United States on June 3, 2026
J
Verified Purchase
JustAShopper
Louisville, US
★★★★★ 5
Nice suit
Size: Medium, Color: Black
Cool fits well and is comfortable.
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Reviewed in the United States on May 21, 2026
J
Verified Purchase
Jamie Myers
Birmingham, US
★★★★★ 4
Very pleasantly suprised - good quality, for a great price!
Size: Large, Color: Black
I ordered this suit for my son, for Prom. I was nervous that it was going to be poor quality, or the fit would be really off, but was absolutely blown away by the quality, for the price. ..its a great deal for good quality. Especially for young men. For reference, my son is tall (6'2") and medium/slender build. He usually wears about a 33" waist. I ordered him a Large but maybe could have gone XL. It does seem to be a slimmer fit. He doesn't usually wear XL in anything.
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Reviewed in the United States on April 29, 2026

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