Cooper Bussmann FNQ-R-2-1/2 Cc Time Delay Fuse 2.5A

Product Description

The COOPER BUSSMANN FNQ-R-2-1/2 is a CC-class cartridge time delay fuse rated at 2.5 amps for use in general-purpose overcurrent protection applications. Built in a rejection-style cartridge body measuring 10.3 mm in diameter and 1.5 inches in length, this fuse is designed to mount in a compatible CC-class fuse holder. The time delay characteristic allows brief inrush currents to pass without nuisance tripping while still providing reliable protection against sustained overloads and short circuits. Electricians and control panel technicians are the primary installers of this component in low-voltage control circuits, motor control centers, and HVAC equipment control boards.

This fuse is suited for residential and light commercial applications where CC-class fusing is specified, including HVAC control circuits, small motor branch circuits, and industrial control panels. The rejection feature ensures the fuse can only be installed in CC-class fuse holders, preventing accidental substitution with non-time-delay fuses of the same amperage. Its compact cartridge form factor fits standard panel and equipment fuse blocks that accept CC-class components.

Key Features

• CC-class rejection design prevents cross-installation with non-CC fuse holders
• Time delay characteristic tolerates motor inrush and transformer magnetizing currents
• 2.5 amp rating suits low-amperage control circuit protection
• Cartridge body: 10.3 mm diameter, 1.5 inches overall length
• UL Listed 248-4 Class CC, CSA Class CC certified, CE marked, and RoHS compliant
• 200 kA interrupting rating at AC RMS for high fault-current environments

Compatibility

Designed for use in CC-class fuse holders and fuse blocks that accept cartridge fuses with a 10.3 mm diameter rejection-style body. The rejection feature limits fitment strictly to CC-class rated holders.

Installation Notes

Installation should be performed by a licensed electrician in accordance with NEC Article 240 and the equipment manufacturer's wiring diagram. De-energize and lockout/tagout the circuit before replacing any fuse. Verify the replacement fuse amperage, class, and voltage rating match the circuit requirements before insertion. Never substitute a non-time-delay or non-CC-class fuse in a circuit specifying this fuse type.