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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Ships within 48 hours · Estimated delivery Aug 13 - Aug 18

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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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Verified Purchase
Stephen L. Smith
Whiting, US
★★★★★ 5
Worth The Cost Using For Subaru's.
Size: 5 Quart, Style: 1 Pack
Worked great in my Subaru Outback and my daughter's Subaru Forester. Both transmissions shifting very smoothly.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 26, 2026
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Verified Purchase
JACK
Dallas, US
★★★★★ 5
Exactly what advertised
Size: 5 Quart, Style: 1 Pack
Good product and is the same as Genuine Subaru CVT fluid. This company makes it for Subaru
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Reviewed in the United States on May 13, 2026
S
Verified Purchase
Steve
Phoenix, US
★★★★★ 5
Fit for 2021 Subaru Forester CVT
Size: 5 Quart, Style: 1 Pack
Works just fine in the 2021 Forester. Better value than subaru branded CVT Oil. Compatible with any subaru CVT.
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Reviewed in the United States on May 4, 2026
D
Verified Purchase
Dwight Byrd
Grantham, US
★★★★★ 5
A much more affordable option for Subaru owners
Size: 5 Quart, Style: 1 Pack
When you're paying between $16 & $18+ per quart of Subaru brand CVTF 2 fluid this is a much more affordable option. If you look on the back of a Subaru branded CVTF 2 quart bottle you'll see the Idemitsu logo. Doing this job myself saved me over $1000 on what the dealership quoted me to change the valve body and drain and fill my CVT without skimping on anything.
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Reviewed in the United States on March 18, 2026
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Verified Purchase
neal
Cuba, US
★★★★★ 5
Same fluid as the Subaru brand
Size: 5 Quart, Style: 1 Pack
This is the manufacturer that makes the Subaru cvt fluid. I used this for the drain and fill on a 2019 Subaru Forester. No problem using a hand pump to fill the transmission. Excellent product will use again to service a 2018 Subaru Crosstrek.
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Reviewed in the United States on April 22, 2026

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