SKU: 75215839878

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:
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  • 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: 75215839878

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4.8 ★★★★★
Based on 5 reviews
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Product Reviews
K
Verified Purchase
Keith M
Port Orchard, US
★★★★★ 5
Fantastic Mount especially on rough Roads
Robust and discretely positioned mount. This mount is the real deal. It is by far the highest quality most stable mount that I've ever had in my Tacoma pickup. I also really like that it's positioned closer to the steering wheel in instead of in the windshield, making it easier to view. Very highly recommended!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 27, 2026
R
Verified Purchase
Rosati
Natrona Heights, US
★★★★★ 5
Perfecto Product!!
I rarely write reviews, however on this product I need too. This clearly is a pricey phone mount, but after reading so many reviews I went for it & purchased. After opening, I immediately could see & feel the quality of material used. Installation was surprisingly easy & quick to my Tacoma. The mount is very firm, sturdy, very adjustable, perfectly designed product. For as costly as this was, I have absolutely no regrets! Totally can recommend this product to anyone with a Tacoma within the stated production years. So as so many others have said accurately in reviews, I am beyond satisfied even with the cost in mind.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 8, 2023
R
Verified Purchase
Ren Bolln
Draper, US
★★★★★ 5
Perfect fit for my 2018 sr5 Tacoma. Great quality!
Extremely well made. Doesn't rattle or slide off. Holds the phone tightly. Finally found a phone mount that works great for my Tacoma (2018 sr5). I highly recommend this product.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 5, 2025
G
Verified Purchase
GT
West Palm Beach, US
★★★★★ 5
5 Stars with 1 Call-Out….
SOLID built like a tank! Really like the all-metal design. No vibration on the road and minimal if any off road, extremely stable. 360 adjustability = endless options on positioning your phone. Overall a good buy considering fit, form and functionality as compared to the less expensive composite holders that shake move and rattle (Drives me nuts). The ONLY negative…. I have a pro max iphone with a case and there’s no way one-handed operation works to insert and remove the phone into the holder. You can use one hand to adjust the angle and positioning but not otherwise. An OFI for OffRoam, incorporate a tension adjustment into the design for ease of insertion and removal of the phone (without breaking the bank). Taking all things into consideration the pros far outweigh the cons! Best unit out there for Gen 3 Tacoma owners.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 14, 2026
E
Verified Purchase
Everette Entzminger
Carnegie, US
★★★★★ 5
Safe phone travels
Color: for 2025-2026 Kia Carnival
Works in my Kia Carnival Hybrid so u can have my phone at eye level and does not block my screen. Easy to install. Not too sticky. Waiting to see how it holds up to the FL heat. To be continued.
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Reviewed in the United States on February 23, 2026

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