Cooper Bussmann FNQ-R-6 Time Delay Cartridge Fuse 6A Cc

Product Description

The COOPER BUSSMANN FNQ-R-6 is a Class CC time delay cartridge fuse rated at 6 amps, designed for general-purpose overcurrent protection in low-voltage control circuits. It features a rejection design that prevents substitution with lower-rated fuse classes, helping maintain system integrity. At 1.5 inches in overall length and 10.3 mm in diameter, it fits standard CC fuse holders. The FNQ-R-6 carries a 200 kA interrupting rating at AC (RMS), making it suitable for installations where high fault-current capacity is required. Licensed electricians and controls technicians are the primary installers of this component.

The FNQ-R-6 is used in residential and commercial electrical panels, motor control centers, and HVAC control circuit applications where a Class CC time delay fuse is specified. Time delay characteristics allow it to withstand brief inrush currents common in motor-load and transformer circuits without nuisance tripping. It mounts in a compatible CC-class fuse holder and is well suited to branch-circuit and control-circuit protection tasks where space and rejection compliance are both required.

Key Features

• 6 amp rating with time delay response for motor and transformer inrush tolerance
• Class CC rejection design prevents installation of non-CC fuses in the same holder
• 200 kA interrupting rating at AC (RMS) for high fault-current environments
• Compact cartridge body: 1.5 inches length, 10.3 mm diameter
• UL Listed 248-4 Class CC, CSA Class CC certified, CE Certified, and RoHS Compliant

Compatibility

Designed for use in Class CC fuse holders that accept rejection-style cartridge fuses. The rejection ferrule ensures this fuse cannot be installed in non-CC holders, limiting fitment to holders specifically rated for Class CC devices.

Installation Notes

Installation should be performed by a qualified electrician in accordance with applicable NEC requirements. De-energize and lock out the circuit before replacing or inspecting fuses. Use an approved fuse puller when removing cartridge fuses from live-adjacent equipment. Verify that the replacement fuse class, amperage, and voltage rating match the original specification before closing the circuit.