Littelfuse FLNR100 Time-Delay Fuse 100 Amp 250V Class RK5

The Littelfuse FLNR100 is a 100 amp time-delay fuse designed for reliable overcurrent protection in industrial and commercial electrical systems. This dual-element, current-limiting fuse provides excellent short-circuit protection while offering time-delay characteristics that prevent nuisance tripping from temporary overloads and motor starting currents.

Key Features:

• 100 amp current rating with 250VAC voltage rating (also suitable for 125VAC applications)
• Class RK5 time-delay design provides superior protection against short circuits while tolerating temporary overloads
• Dual-element construction combines thermal cutoff for overload protection and fuse link for short-circuit protection
• Current-limiting design helps protect downstream equipment and reduces potential arc flash hazards
• 200,000 amp interrupting rating (AIR) at 250VAC
• UL Listed and CSA Certified for code compliance
• Rejection-style blade design prevents installation of incorrect fuse class

The FLNR series is ideal for motor circuits, lighting panels, transformer protection, and general power distribution applications where time-delay characteristics are required. These fuses meet NEC requirements and are commonly used in industrial control panels, HVAC equipment, and commercial electrical installations.