Cooper Bussmann FRN-R-1-6/10 Cartridge Time Delay Fuse RK5

Product Description

The COOPER BUSSMANN FRN-R-1-6/10 is a cartridge-style, time-delay fuse rated at 1.6 amps and classified as Class RK5. It is designed for general-purpose overcurrent protection in branch circuits and equipment circuits where a controlled response to temporary inrush currents is required. The fuse measures 2 inches in overall length and 14.3 mm in diameter, fitting standard RK5 fuse holders. With a two-element construction and non-indicating body, it provides reliable protection without a visible trip indicator. Licensed electricians and industrial maintenance technicians install this fuse in panelboards, motor control centers, and other electrical enclosures governed by NEC requirements.

This fuse is suited for residential, commercial, and light industrial electrical systems where Class RK5 time-delay protection is specified. Its time-delay characteristic allows it to absorb brief motor-start inrush currents or transformer magnetizing surges without nuisance opening, making it appropriate for circuits serving motors, transformers, and similar inductive loads. The non-indicating body keeps the profile compact for dense fuse holder arrangements.

Key Features

• Class RK5 time-delay fuse rated at 1.6 amps for general-purpose branch circuit protection
• Two-element design accommodates temporary inrush currents without nuisance opens
• Cartridge body measures 2 inches in overall length and 14.3 mm in diameter
• Non-indicating construction maintains a low-profile fit in standard RK5 fuse holders
• CE Certified, CSA C22.2 No. 248.12 Class 1422-02 File 53787 Certified, and UL Listed 248-12 Class RK5 Guide JDDZ File E4273
• Interrupting rating of 20 kA at DC 200 volts RMS

Compatibility

Designed as an OEM-style replacement for Class RK5 cartridge fuse positions in standard fuse holders accepting a 2-inch by 14.3 mm time-delay fuse body.

Installation Notes

Installation and replacement of branch-circuit fuses must be performed by a qualified electrician in accordance with the National Electrical Code (NEC) and all applicable local codes. De-energize and lock out the circuit before removing or installing the fuse. Verify that the replacement fuse amperage and class match the circuit and equipment nameplate requirements. Do not substitute a higher-amperage or different-class fuse in place of the specified rating.