Bussmann FRN-R-7-1/2 Fusetron Dual-Element Time-Delay Fuse

Bussmann FRN-R-7-1/2 Fusetron Dual-Element Time-Delay Fuse, 250V, 7-1/2A

The Bussmann FRN-R-7-1/2 is a Fusetron dual-element time-delay fuse rated 250V and 7-1/2A, engineered to deliver dependable overcurrent protection for electrical circuits. As part of Bussmann's Fusetron series, this fuse 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. The FRN-R-7-1/2 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 its 250V, 7-1/2A rating, this fuse 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: 7-1/2A, sized for circuits and equipment requiring this current-carrying capacity.
• Voltage Rating: 250V, suitable for systems operating at or below this voltage.
• 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.
• Model FRN-R-7-1/2: Bussmann's Fusetron series designation, identifying the specific amperage and voltage combination of this fuse.
• Standard Fuse Construction: designed for compatibility with common fuse holders and fuse blocks accepting this class of fuse, streamlining replacement and installation.
• Reliable Circuit Protection: engineered to open under fault conditions to help protect connected equipment and wiring from damage caused by overcurrent events.

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 the Bussmann FRN-R-7-1/2 for your 250V, 7-1/2A 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 fuses like the FRN-R-7-1/2 for consistent time-delay characteristics that reduce nuisance fuse replacements while still safeguarding circuits from damaging fault currents.