Cooper Bussmann FNQ-R-10 Cc Class Time Delay Fuse 10A

Product Description

The COOPER BUSSMANN FNQ-R-10 is a Class CC cartridge time delay fuse rated at 10 amps for use in low-voltage control circuits, motor branch circuits, and supplemental protection applications. This rejection-style fuse is designed to prevent installation in non-CC fuse holders, providing an added layer of system protection. The time delay characteristic allows brief inrush currents to pass without nuisance tripping while still providing reliable overcurrent protection. Measuring 1.5 inches in overall length and 10.3 mm in diameter, the FNQ-R-10 is a compact, industry-standard form factor that installs into standard Class CC fuse holders. Licensed electricians and HVAC technicians are the primary installers.

The FNQ-R-10 is suited for residential and light commercial control circuits, including HVAC control panels, transformer secondary protection, and motor control centers where a Class CC time delay fuse is specified. The rejection feature ensures the fuse seats only in CC-rated holders, preventing accidental substitution with non-rejection fuses. Applications typically include 600-volt-rated circuits where branch circuit or supplemental fusing is required per NEC guidelines.

Key Features

• Class CC rejection fuse body prevents installation in non-compatible fuse holders
• Time delay design accommodates motor inrush and transformer magnetizing currents without nuisance tripping
• 10 amp rating suitable for low-current control and branch circuit protection
• 200 kA interrupting rating at AC (RMS) for high fault-current environments
• UL Listed 248-4 Class CC (Guide JDDZ, File E4273) and CSA Class CC certified
• RoHS compliant and CE certified for broad application suitability

Compatibility

Designed for use in standard Class CC fuse holders. The rejection-style body limits installation to CC-rated holders only, as required by the Class CC specification.

Installation Notes

Installation should be performed by a licensed electrician in accordance with NEC Article 240 and any applicable local codes. Always de-energize and lock out the circuit before removing or installing fuses. Use an appropriately rated fuse puller when servicing energized panels after power restoration. Verify the fuse holder is rated for Class CC fuses before installation.