Littelfuse KLNR400 - RK1 Class Fuse 400A (200kA AIC @ 250V)

Littelfuse KLNR400 is a current-limiting fuse designed for industrial circuit protection applications requiring high interrupting capacity. This RK1 class fuse features a 400A current rating and 250V voltage rating with an impressive 200kA interrupting capacity at rated voltage. The single-barrel construction measures 2.09 inches in diameter and weighs 2 lb, providing robust protection in low voltage systems. Engineered to meet industry standards for time-delay characteristics, this fuse offers reliable overload and short-circuit protection. Typical applications include motor branch circuits, feeder circuits, and industrial control panels where coordinated protection is essential.

Key Features & Specifications

• Type: Current-limiting time-delay fuse, RK1 class, single barrel construction
• Voltage Rating: 250V AC
• Current Rating: 400A
• Dimensions: 2.09 inches diameter
• Standards: UL/CSA recognized, RK1 classification
• Applications: Motor protection, feeder circuits, industrial control panels
• AIC rating: 200kA @ 250V
• Class Rating: RK1
• Barrels: 1
• Weight: 2 lb
• Item Subcategory: Low Voltage
• Family: KLNR Series

Product Identification

• UPC: 079458280937