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

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You may return items within 30 days of delivery for a refund.

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