Littelfuse FLNR400 - RK5 Time-Delay Fuse 400A@250V (200kA AIC)

Littelfuse FLNR400 is a UL Class RK5 dual-element time-delay fuse designed for circuit protection in low-voltage applications. Rated for 250V AC/DC systems with a 400A current capacity, it features a rejection blade connection and time-delay characteristics for overload protection. The fuse measures 8-5/8" in length with a 2.09" diameter and 1 lb weight, constructed with a single-barrel design for industrial durability. It meets CE, UL 248-12 Class RK5, CSA, and QPL-W-F-1814 standards with a 200kA interrupting rating at 250V. Typical applications include motor branch circuits, transformers, and feeder protection in commercial/industrial power distribution systems.

Key Features & Specifications

• Type: Dual-element time-delay fuse with rejection blade connection
• Voltage Rating: 250V AC/DC
• Current Rating: 400A
• Dimensions: 8-5/8" length x 2.09" diameter
• Weight: 1 lb
• Class Rating: RK5
• Barrels: 1
• Velocity: Time Delay (TD)
• Certification: CE, UL 248-12 Class RK5, CSA, QPL-W-F-1814
• AIC rating: 200kA@250V
• Connection: Rejection Blade

Product Identification

• UPC: 079458150933