Littelfuse® FLNR series fuses have been the superior UL Class RK5 dual element time delay fuses and are the most widely used class of fuses. FLNR series fuses provide excellent protection for all types of circuits especially those containing motors. However, users and specifiers should consider the significant benefits offered by indicator fuses.

Littelfuse® Time Delay Fuse, 250 V, 40 A, Dual Element Fuse, Class: RK5, Fiberglass Housing, 13/16 in Diameter, 3 in Overall Height, For Use With: LFR, ECNR, FLNR, FRN-R, TR-R Series Fuse Blocks

• Reliable interruption of all overcurrent's up to 200000 A
• Faster acting short circuit protection than any non-current limiting mechanical protective device
• Accurate and reliable automated, precision manufactured and assembled parts ensure accurate, consistent response to overloads and short circuits