FLNR040ID - FLNR_ID Series

FLNR040ID - FLNR_ID Series Indicator Fuse The FLNR040ID from Littelfuse is a 40 amp, Class RK5 indicator fuse designed for electrical distributors and switchgear suppliers requiring reliable circuit protection. This fuse provides visual blown fuse indication at a glance, enabling quick identification and reducing downtime in industrial and commercial electrical systems. Its dual-element, time-delay design offers advanced short circuit and overload protection, making it suitable for motor control circuits, transformers, switchboard mains, feeders, and general purpose applications. Specifications Manufacturer: Littelfuse Amperage Rating: 40 A Voltage Rating (AC): 250 V Voltage Rating (DC): 125 V (for 35 – 600 A range) Interrupting Rating (AC): 200,000 A rms symmetrical Interrupting Rating (DC): 20,000 A Fuse Type: Dual-element, time delay UL Listed: File E81895 CSA Certified: File LR29862 Federal Specification: WF-1814 (QPL-W-F-1814) Product Weight: 0.1230 lb Manufacturer Part Number: FLNR040ID Features Visual blown fuse indication for immediate status recognition True dual-element design for superior short circuit and overload protection Current limiting to reduce damage during fault conditions Reduces downtime and nuisance openings, enhancing safety and operational efficiency Compatible with recommended fuse holders such as LFR60 and LFR25 series Downloads & Links FLNR and FLSR Series Datasheet UL JDDZ E81895 CSA 1422-02 029862