Littelfuse FLSR040 - Class RK5 Time-Delay Fuse 40A 600V (200kA AIC Rating)

Littelfuse FLSR040 is a UL Class RK5 dual-element time-delay fuse designed for reliable circuit protection in industrial applications. It features a 600V AC voltage rating and 40A current rating with 200kA interrupting capacity at 600V for high-fault current protection. The fuse construction includes a single-barrel design measuring 1.06 inches in diameter with a 5-1/2 inch length and weighs 5.19 lb, built for durable performance. It complies with UL 248-12 Class RK5 standards and carries CE, CSA, and QPL-W-F-1814 certifications for quality assurance. Typical applications include motor branch circuit protection, transformer protection, and industrial control panel circuits where time-delay characteristics prevent nuisance tripping during temporary overload conditions.

Key Features & Specifications

• Type: UL Class RK5 Dual-Element Time-Delay Fuse
• Voltage Rating: 600V AC
• Current Rating: 40A
• Dimensions: 1.06" diameter x 5-1/2" length
• Weight: 5.19 lb
• Standards: UL 248-12 Class RK5, CE, CSA, QPL-W-F-1814
• Applications: Motor branch circuits, transformer protection, industrial control panels
• Class Rating: RK5
• Barrels: 1
• AIC rating: 200kA@600V
• Country of Origin: Mexico

Product Identification

• UPC: 07945817075
• GTIN: 00079458170757