A4BY800 - Mersen 800 Amp 600V AC 300V DC Class L Time Delay Current Limiting Fuse, Bolt-On Mount, 200kA Interrupt Rating, UL/CSA Listed

A4BY800

A4BY800 is a high-performance Class L time delay current limiting fuse manufactured by Mersen, designed for robust circuit protection in demanding electrical environments.

This fuse features an 800 Amp rating, 600V AC and 300V DC voltage capability, and a bolt-on mounting style for secure installation. It offers a 200kA interrupting rating, ensuring reliable protection against high fault currents. The A4BY800 is UL listed to standard 248-10 and CSA certified to C22.2 No. 248.10, with self-certification for DC applications. Its unique physical dimensions prevent accidental substitution with incompatible fuse classes, and the glass melamine body with plated terminals provides durability in harsh conditions.

Key Specifications
• Amperage: 800A
• Voltage: 600V AC, 300V DC
• Poles: 1
• Mounting Type: Bolt-On
• Interrupt Rating: 200,000A (200kA)
• Series/Frame: Class L
• Trip Unit: Time Delay (4 second)
• Certifications: UL 248-10, CSA C22.2 No. 248.10, DC self-certified per UL248
• Body Material: Glass Melamine
• Terminals: Plated
• Indication System: Yes
• Physical Size: 2-1/2" x 8-5/8"

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Specifications

• Part Number: A4BY800
• Manufacturer : Mersen
• Brand : Mersen
• Category : Fuse
• Item Subcategory : Low Voltage Fuse
• Family : AKR Series
• Type : A4BY
• Voltage : 600
• Amperage : 800
• AIC rating : 200kA@600V
• Diameter : 2.5
• Class Rating : L
• Barrels : 1

Product Data

• UPC : 782001939113
• GTIN : 00782001939113
• Country of Origin : Mexico
• Dimensions : x 8-5/8" x
• Weight : 5
• Certification : CSA, UL