Littelfuse FLNR-250 - Low Voltage Fuse 250A RK5 Class (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 a 600V AC voltage rating and provides time-delay (TD) characteristics to withstand temporary overloads without unnecessary interruption. The fuse construction utilizes a 0.56-inch diameter single-barrel design with RK5 classification, ensuring high interrupting capacity and effective short-circuit protection. This fuse complies with UL/CSA standards for safety and performance requirements. Typical applications include motor control centers, industrial control panels, and power distribution equipment where reliable circuit protection is critical.

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: Branch circuit protection, feeder protection, motor control centers, industrial power distribution
• Class Rating: RK5
• Barrels: 1
• Velocity: TD - Time Delay
• Item Subcategory: Low Voltage