Bussmann FNQ-R-4 Class CC Time-Delay Fuse

Bussmann FNQ-R-4 Class CC Time-Delay Fuse, 4A, 600V, Ferrule End

The Bussmann FNQ-R-4 is an Eaton Bussmann series FNQ-R Class CC time-delay fuse rated 4A at 600V, delivering a 200kAIC interrupt rating for dependable overcurrent protection in commercial and industrial electrical systems. This non-indicating fuse features ferrule end x ferrule end terminations and a rugged melamine tube body, opening in 12 seconds at 200% of rated current so momentary inrush conditions such as motor starting can pass without nuisance blowing while conductors and equipment remain protected. Built to standard Class CC dimensions, the FNQ-R-4 is a footprint-compatible fit for standard Class CC fuse holders, blocks, and disconnect switches used throughout industrial and commercial facilities.

Key Features

• Amperage Rating: 4A Class CC fuse rated 600V for branch-circuit and equipment overcurrent protection.
• Durable Construction: Melamine tube body provides mechanical strength and thermal stability in demanding electrical environments.
• Time-Delay Performance: Opens in 12 seconds at 200% of rated current, allowing momentary overloads such as motor inrush to pass without nuisance operation.
• Ferrule End x Ferrule End: Ferrule terminations for compatibility with standard Class CC fuse holders, blocks, and disconnects.
• High Interrupt Rating: 200kAIC interrupt rating delivers high fault-current withstand capability for demanding circuits.
• Class CC Fuse: Standard Class CC dimensions allow footprint-compatible installation into existing Class CC fuse blocks and holders.
• Non-Indicating, Standard Design: Standard non-indicating construction for reliable, code-compliant overcurrent protection.

Technical Specifications

• Refer to manufacturer documentation for complete technical specifications.

Typical Applications

• Class CC Branch-Circuit Fuse Protection
• Motor and Equipment Overcurrent Protection
• Industrial and Commercial Electrical Panels
• Control Circuit and OEM Equipment Protection
• Panelboard and Disconnect Switch Fusing

Why Bussmann?

Bussmann by Eaton is a recognized name in circuit protection, and the FNQ-R series Class CC fuse reflects that engineering standard with its melamine tube construction, 200kAIC interrupt rating, and consistent 12-second time-delay response at 200% of rated current. The ferrule end x ferrule end configuration and standard Class CC footprint make the FNQ-R-4 a straightforward, code-compliant replacement in existing fuse holders and blocks. Choose the Bussmann FNQ-R-4 for dependable overcurrent protection in professional electrical installations.