Littelfuse FLSR300 - UL Class RK5 Time-Delay Fuse (300A, 600V, 200kA AIC)

Littelfuse FLSR300 is a UL Class RK5 dual-element time-delay fuse designed for overcurrent protection in low-voltage industrial circuits. Rated for 600V AC/DC systems with a 300A current capacity, it features a 200kA interrupting rating at 600V for high-fault protection. The fuse measures 11-5/8 inches in length with a 2.59-inch diameter barrel construction, weighing 2 lb for robust mechanical durability. It meets UL 248-12 Class RK5 standards with additional CE and CSA certifications for industrial compliance. Typical applications include motor branch circuits, transformer protection, and feeder circuits requiring time-delay characteristics.

Key Features & Specifications

• Type: Dual-element time-delay fuse with UL Class RK5 construction
• Voltage Rating: 600V AC/DC
• Current Rating: 300A
• Dimensions: 11-5/8 in length, 2.59 in diameter
• Standards: CE, CSA, QPL-W-F-1814, UL 248-12 Class RK5
• Applications: Motor protection, transformers, industrial feeders
• Class Rating: RK5
• Barrels: 1
• AIC rating: 200kA@600V
• Weight: 2 lb

Product Identification

• UPC: 07945817091
• GTIN: 00079458170917