FLSR400ID - FLSR_ID Series Indicator Fuse

The Littelfuse FLSR400ID is a Class RK5 dual-element time-delay fuse designed for advanced short circuit and overload protection in electrical distribution and motor control circuits. It features a patented solid-state visual blown fuse indicator for quick status identification, reducing downtime and enhancing safety. This fuse is suitable for use by electrical distributors, lighting solutions providers, wire and cable suppliers, and switchgear suppliers in applications such as service entrance switches, transformers, switchboard mains and feeders, and motor branch circuits.

Specifications

• Amperage Rating: 400 A
• Voltage Rating AC: 600 V
• Voltage Rating DC: 300 V
• Interrupting Rating AC: 300 kA rms symmetrical (Littelfuse self-certified)
• Interrupting Rating DC: 20 kA
• Standard: UL Listed (File: E81895), CSA Certified (File: LR29862), Federal Specification WF-1814 (QPL-W-F-1814)
• Product Weight: 3.49 lbs

Features

• Visual blown fuse indication with patented solid-state design
• True dual-element construction for superior performance
• Current limiting to reduce damage during fault conditions
• Time-delay characteristic suitable for motor circuits
• Reduces downtime and nuisance openings, improving safety and reliability

Downloads & Links

• FLNR and FLSR Series Datasheet
• UL JDDZ E81895
• CSA 1422-02 029862