Bussmann FRN-R-8/10 RK5 Time-Delay Fuse

Bussmann FRN-R-8/10 RK5 Time-Delay Fuse, 250V

The Bussmann FRN-R-8/10 is a 250V RK5 time-delay fuse engineered to deliver dependable overcurrent protection across motor circuits, control circuits, and general-purpose branch circuit applications. As part of the Bussmann FRN-R series of Class RK5 fuses, the FRN-R-8/10 combines a 250V voltage rating with time-delay (TD) operation, allowing the fuse to ride through momentary inrush currents-such as those generated during motor starting-while still opening reliably under sustained overload or short-circuit conditions. This balance of surge tolerance and fast-acting fault protection makes the FRN-R-8/10 a practical choice anywhere dependable, code-compliant circuit protection is required. Electrical professionals specify Bussmann fuses for their consistent, repeatable performance in commercial and industrial power distribution systems.

Key Features

• Voltage Rating: 250V, making the FRN-R-8/10 suitable for electrical systems and equipment operating at or below this voltage rating.
• Fuse Class: RK5 (Class RK5) construction, a widely used fuse classification designed for time-delay performance in circuits subject to temporary current surges.
• Time-Delay (TD) Operation: The time-delay design allows the FRN-R-8/10 to withstand momentary inrush currents, such as motor starting loads, without nuisance opening, while still providing dependable protection against sustained overloads and short circuits.
• Model Designation: Identified as FRN-R-8/10 within the Bussmann FRN-R family of RK5 time-delay fuses, matching this specific amperage designation for accurate circuit protection replacement.
• Consistent Manufacturing: Produced by Bussmann to help ensure uniform, repeatable time-delay characteristics from fuse to fuse across a given installation.
• Replacement Accuracy: The FRN-R-8/10 designation helps electricians and maintenance teams specify an exact like-for-like replacement when servicing existing Bussmann FRN-R fuse installations.

Technical Specifications

• Refer to manufacturer documentation for complete technical specifications.

Typical Applications

• Motor Circuit Overcurrent Protection
• Branch Circuit Protection
• Control Circuit Protection
• Industrial and Commercial Electrical Systems
• Panelboard and Disconnect Switch Fusing
• Maintenance Replacement for Existing Bussmann FRN-R Fuse Installations

Why Bussmann?

Bussmann is a widely recognized manufacturer of circuit protection products, and the FRN-R-8/10 reflects that engineering focus with its 250V rating and RK5 time-delay construction. Choosing a Bussmann FRN-R-8/10 fuse helps ensure dependable, time-delay overcurrent protection for motor and branch circuit applications where inrush current tolerance and reliable fault clearing are both essential. For facilities and contractors standardizing on Bussmann circuit protection, the FRN-R-8/10 offers a consistent, code-compliant option for maintaining and expanding RK5 time-delay fuse installations.