Bussmann FNQ Series Midget Time-Delay Fuse, 500V

Bussmann FNQ Series Midget Time-Delay Fuse, 500V

The Bussmann FNQ Series is a family of 500V Midget-style time-delay (TD) fuses engineered to provide dependable, code-compliant overcurrent protection in a compact footprint. This series is available across a broad range of amperage ratings, from 1/10A through 6-1/4A, giving electricians, panel builders, OEMs, and maintenance professionals a single trusted fuse family for precise, low-current protection needs. Every fuse in the FNQ Series shares the same 500V voltage rating and Midget form factor, with a time-delay element engineered to ride through momentary current surges, inrush events, and temporary overload conditions without opening unnecessarily. Because Midget-style fuses are smaller than standard fuse classes, the FNQ Series is widely selected where panel space is at a premium, fitting standard Midget-style fuse holders and fuse blocks commonly used in industrial and commercial control panels. Select the amperage rating that matches your circuit's specific overcurrent protection requirement from the available options in this family.

Key Features

• Amperage Rating Range: Available from 1/10A through 6-1/4A, allowing precise selection of overcurrent protection tailored to low-current control and instrumentation circuits.
• Voltage Rating: Every fuse in the FNQ Series is rated 500V, giving the headroom needed for a wide range of circuit voltage applications in commercial and industrial electrical systems.
• Midget Fuse Design: Compact Midget-style fuse body is sized to fit standard Midget fuse holders, fuse blocks, and disconnect switches, making it easy to specify as a drop-in replacement across existing installations.
• Time-Delay (TD) Construction: Time-delay fuse element is engineered to ride through temporary current surges and inrush conditions, such as motor starting current, without opening, reducing nuisance fuse replacement.
• FNQ Series: Part of the established Bussmann FNQ family of Midget time-delay fuses, built for consistent, repeatable performance across amperage ratings and production lots.
• Space-Saving Format: The Midget fuse class occupies less physical space than larger fuse types, supporting higher packing density in fuse panels and disconnect blocks.
• Compact Footprint: The Midget fuse form factor saves panel and enclosure space compared to larger fuse classes, supporting compact panel design across the entire series.

Technical Specifications

• Series: FNQ
• Voltage Rating: 500V
• Amperage Range: 1/10A - 6-1/4A (select amperage rating at time of order)
• Fuse Class: Midget
• Time-Delay Type: Time-Delay (TD)

Typical Applications

• Control Circuit Overcurrent Protection
• Motor and Transformer Circuit Protection
• Panelboard and Control Panel Fusing
• Instrumentation and Low-Current Circuit Protection
• Industrial and Commercial Electrical Equipment Protection
• Fuse Panel and Disconnect Block Retrofits

Why Bussmann?

Bussmann fuses are engineered for consistent, dependable overcurrent protection that electrical professionals rely on for code-compliant installations across industrial and commercial facilities. The FNQ Series combines a compact Midget form factor with time-delay performance across its full amperage range, giving installers and OEMs a space-saving fuse solution built for demanding, low-current electrical systems. With decades of fuse manufacturing experience behind the Bussmann name, the FNQ Series is manufactured to consistent quality standards that support safe, reliable circuit protection at every amperage rating offered. When you need overcurrent protection you can trust for critical control and instrumentation circuits, Bussmann's FNQ Series delivers the rated performance electrical professionals expect.