Cooper Bussmann FNQ-R-15 Cc Class 15A Time Delay Fuse

Product Description

The COOPER BUSSMANN FNQ-R-15 is a Class CC cartridge time delay fuse rated at 15 amps, designed for branch circuit and control circuit overcurrent protection in commercial and industrial electrical systems. The time delay characteristic allows it to tolerate brief inrush currents from motor loads and transformer primaries without nuisance tripping, while still providing reliable fault clearing. With an interrupting rating of 200 kA at AC (RMS) and 20 kA at DC, this fuse is suited for high-fault-current environments. It mounts in a standard CC-class rejection fuse holder, and its rejection feature prevents substitution with non-CC fuses. Licensed electricians are the primary installers of this component.

The FNQ-R-15 is used in residential, light commercial, and industrial control panels where Class CC overcurrent protection is specified. Typical applications include motor control circuits, HVAC control wiring, and low-voltage branch circuits where space-saving, high-interrupting-capacity fusing is required. The 10.3 mm diameter and 38.10 mm overall length fit standard CC fuse holders without modification. Its general purpose rating makes it appropriate across a wide range of control and power circuit applications where time delay performance is needed.

Key Features

• Class CC rejection cartridge body prevents substitution with lower-rated fuse types
• Time delay design tolerates motor inrush and transformer startup currents
• 200 kA interrupting rating at AC (RMS) for high-fault-current installations
• 20 kA interrupting rating at DC for DC circuit applications
• RoHS compliant and CE certified for broad application compliance
• UL Listed 248-4 Class CC (Guide JDDZ, File E4273) and CSA Class CC certified

Compatibility

Designed for use with standard Class CC rejection-style fuse holders. The CC rejection feature ensures this fuse is compatible only with holders designed to accept Class CC fuses, preventing field substitution with non-compliant fuse types.

Installation Notes

Installation should be performed by a licensed electrician in accordance with applicable NEC requirements. De-energize and lock out the circuit before removing or installing any fuse. Verify the fuse holder is rated for Class CC cartridge fuses before installation. Do not exceed the fuse ampere rating or attempt to defeat the rejection feature by modifying the holder.