Cooper Bussmann FRN-R-2-1/4 Time Delay Fuse 2.25A RK5

Product Description

The COOPER BUSSMANN FRN-R-2-1/4 is a time delay cartridge fuse rated at 2.25 amps in the RK5 class. It is designed for general-purpose overcurrent protection in control circuits, motor branch circuits, and equipment panels where a time delay characteristic is required to ride through inrush currents without nuisance tripping. The fuse body measures 2 inches in overall length and 0.563 inches in diameter. It is a dual-element, non-indicating fuse that mounts in a standard fuse holder. Licensed electricians and industrial maintenance technicians install this fuse as part of panel and equipment servicing work.

This fuse is suited for residential, commercial, and light industrial electrical systems where Class RK5 time delay protection is specified. It is commonly installed in disconnect switches, fuse blocks, and equipment control panels that call for a 2.25-amp time delay fuse. The two-element design allows the fuse to carry normal motor starting currents while still opening reliably on sustained overloads or short-circuit faults. It is a single unit per package.

Key Features

• Class RK5 time delay cartridge fuse rated at 2.25 amps
• Dual-element design handles motor inrush without nuisance tripping
• Non-indicating fuse body in standard cartridge form factor
• Mounts in standard fuse holders for easy replacement
• CE Certified, CSA Certified, and UL Listed to published standards

Compatibility

Designed as an OEM-style replacement for Class RK5 time delay cartridge fuses in standard fuse holders requiring a 2.25-amp, 2-inch cartridge fuse.

Installation Notes

Installation must be performed by a qualified electrician in accordance with the National Electrical Code (NEC) and applicable local codes. Always de-energize and lock out the circuit before removing or installing the fuse. Verify the fuse holder is rated for Class RK5 cartridge fuses before installation. Do not substitute a fuse of a different amperage or class than what is specified for the circuit.