Mersen A4J450 - Class J Fuse 450A (200kA AIC @600V)

Mersen A4J450 is a Class J low-voltage fuse designed for comprehensive circuit protection in industrial power distribution systems. This 600VAC-rated fuse features a 450A current rating and provides 200kA interrupting capacity at 600V for reliable fault current protection. The single-barrel construction with 2.5-inch diameter and 3 lb weight ensures robust physical durability in demanding environments. Engineered to meet industry standards for Class J fuses, this Amp-Trap family component delivers precise time-current characteristics for motor branch circuit and feeder protection applications where selective coordination and high interrupting ratings are critical requirements.

Key Features & Specifications

• Type: Class J low-voltage fuse, single barrel construction, Amp-Trap family
• Voltage Rating: 600V AC
• Current Rating: 450A
• Dimensions: 2.5-inch diameter
• Standards: Class J fuse compliance
• Applications: Industrial power distribution, motor branch circuits, feeder protection
• AIC rating: 200kA@600V
• Class Rating: J
• Barrels: 1
• Weight: 3 lb

Product Identification

• UPC: 782001960476
• GTIN: 00782001960476