Mersen A4BY400 - Class L Fuse 400A (200kA@600V Interrupting Capacity)

Mersen A4BY400 is a Class L low-voltage fuse designed for high-interrupting circuit protection in industrial power distribution systems. Rated for 600V AC applications with a 400A current capacity, this single-barrel fuse delivers 200kA interrupting capacity at rated voltage for reliable fault protection. The compact 2-inch diameter unit features robust construction meeting UL/ANSI standards for demanding environments. Certified for industrial power panels and switchgear, it provides critical overcurrent protection for motor control centers, transformers, and feeder circuits.

Key Features & Specifications

• Type: Class L time-delay fuse with single barrel construction
• Voltage Rating: 600V AC
• Current Rating: 400A
• Dimensions: 2-inch diameter
• Standards: UL/ANSI compliant
• Applications: Industrial power distribution, motor control centers, transformers
• AIC rating: 200kA@600V
• Class Rating: L
• Barrels: 1
• Weight: 3 lb

Product Identification

• UPC: 782001939045
• GTIN: 00782001939045