Littelfuse FLNR-250 - Low Voltage Fuse 250A (RK5 Time Delay)

Littelfuse FLNR-250 is a low-voltage current-limiting fuse designed for branch circuit and feeder protection in industrial electrical systems. It features a 250A current rating with 600V AC voltage rating and provides time-delay (TD) characteristics to withstand temporary overloads while maintaining superior short-circuit protection. The fuse construction utilizes a 0.56-inch diameter single-barrel design with RK5 classification, weighing 5.19 lb for robust performance in demanding applications. It complies with UL/CSA standards for safety and reliability in commercial and industrial power distribution. Typical applications include motor circuit protection, service entrance equipment, and industrial control panels where high interrupting capacity and time-delay characteristics are required.

Key Features & Specifications

• Type: Current-limiting time-delay fuse, RK5 class, single barrel construction
• Voltage Rating: 600V AC
• Current Rating: 250A
• Dimensions: 0.56-inch diameter
• Standards: UL/CSA listed
• Applications: Industrial motor protection, branch circuits, feeder circuits, service entrance equipment
• Class Rating: RK5
• Barrels: 1
• Velocity: TD - Time Delay
• Item Subcategory: Low Voltage
• Weight: 5.19 lb