Bussmann Fusetron FRN-R Dual-Element Time-Delay Fuse, 250V

Bussmann Fusetron FRN-R Dual-Element Time-Delay Fuse, 250V

The Bussmann Fusetron FRN-R series is a family of dual-element time-delay fuses rated 250V, available in amperage ratings from 1-1/4 Amp to 7-1/2 Amp to match the specific current-carrying needs of your circuit or equipment. Each fuse in this series pairs a dual-element construction with a spring-loaded thermal unit, allowing it to ride through momentary inrush currents from motors and other equipment while still opening quickly under sustained overload or short-circuit conditions. Every FRN-R fuse is built as a direct-fit replacement for standard fuse holders and fuse blocks rated for this class, simplifying maintenance, retrofit, and upgrade work. With a shared 250V voltage rating across the line, the FRN-R series is suited to branch-circuit and equipment protection applications where reliable time-delay performance is required to prevent nuisance fuse opening.

Key Features

• Amperage Rating Range: available from 1-1/4 Amp to 7-1/2 Amp, allowing you to select the exact current-carrying capacity your circuit or equipment requires.
• Voltage Rating: 250V, suitable for systems operating at or below this voltage across every amperage option in the series.
• Fusetron Dual-Element Design: time-delay construction that rides through temporary overload conditions, such as motor starting inrush, while responding rapidly to true short-circuit or sustained overload faults.
• FRN-R Series Designation: Bussmann's Fusetron series identifier, with individual amperage ratings selectable to match your specific application.
• Standard Fuse Construction: designed for compatibility with common fuse holders and fuse blocks accepting this class of fuse, streamlining replacement and installation across the amperage range.
• Reliable Circuit Protection: engineered to open under fault conditions to help protect connected equipment and wiring from damage caused by overcurrent events, at any amperage rating in the series.

Technical Specifications

• Refer to manufacturer documentation for complete technical specifications.

Typical Applications

• Electrical Circuit Overcurrent Protection
• Motor and Transformer Circuit Protection
• Industrial and Commercial Electrical Systems
• Panelboard and Fuse Block Installations
• Equipment Replacement and Retrofit Projects
• General Purpose Branch Circuit Wiring

Why Bussmann?

Bussmann is a well-established name in circuit protection, and the Fusetron FRN-R series is engineered around a dual-element time-delay design that balances reliable overload ride-through with fast-acting response to short circuits. Specifying a Bussmann FRN-R fuse in the 250V, 1-1/4 Amp to 7-1/2 Amp range for your application means installing a fuse built for consistent, dependable performance in demanding commercial and industrial electrical environments, helping maintain code-compliant overcurrent protection across your system. Professionals rely on Bussmann Fusetron fuses like the FRN-R series for consistent time-delay characteristics that reduce nuisance fuse replacements while still safeguarding circuits from damaging fault currents, whatever amperage rating your equipment demands.