Littelfuse FLNR-100 - Class RK1 Fuse 100A@600V (200kA Interrupt Rating)

Littelfuse FLNR-100 is a low-voltage current-limiting fuse designed for circuit protection in industrial power distribution systems. Rated for 600V AC/DC with a 100A current capacity, it features a durable ceramic body construction with tin-plated copper end caps for reliable conductivity. The fuse meets UL 248-12 and CSA standards, ensuring compliance with North American safety requirements. Its compact 10.3 x 38.1 mm (diameter x length) form factor makes it suitable for panelboards, switchgear, and motor control centers. Typical applications include protection of transformers, capacitors, and feeder circuits in commercial and industrial facilities.

Key Features & Specifications

• Type: Class RK1 current-limiting fuse with ceramic body and sand filler
• Voltage Rating: 600V AC/DC
• Current Rating: 100A
• Dimensions: 10.3mm diameter x 38.1mm length
• Standards: UL 248-12, CSA certified
• Applications: Industrial power distribution, transformer protection, motor circuits
• Interrupt Rating: 200kA at 600V AC
• Weight: 0.5 lb
• Temperature Range: -50°C to +125°C
• Termination: Tin-plated copper end caps