Eaton FRN-R-5 Fuse - RK5 Class, 250 Vac, CE Marked
Part Number: FRN-R-5
Quick Summary
Introducing the Eaton FRN-R fuse, a time-delay RK5 dual-element device that protects motor circuits and control panels. Inrush surges and startup transients often cause nuisance trips, risking unplanned downtime. CE marked and Class RK5 compliant, FRN-R delivers up to 200 kAIC at 250 Vac and 20 kAIC at 125 Vdc. Designed for low-voltage branch circuits and motor protection, it helps reduce downtime and extend equipment life. With standard ferrule-end connections and detailed technical data, procurement and installation are straightforward. This alignment with IEC/UL guidelines supports RoHS compliance, while offering a balanced protection strategy for today’s automated systems. For engineers evaluating protection schemes, its 5 A rating and high interrupt ratings provide a robust, easy-to-specify solution.
Product Information
Extended Description
FRN-R-5 Eaton: Eaton Bussmann Series Class RK5 fuse, FRN-R, time-delay, dual-element, current limiting fuse, 5 A, non-indicating fuse, interrupting rating of 200 kA at 250 Vac and 20 kA at 125 Vdc
Product Name
Eaton Bussmann series FRN-R fuse
Catalog Number
FRN-R-5
UPC
051712507226
Product Length/Depth
3 in
Product Height
0.81 in
Product Width
0.81 in
Product Weight
0.1 lb
Warranty
Not Applicable
Compliances
CE Marked
Amperage Rating
5 A
Interrupt rating
20 kAIC at 125 Vdc 200 kAIC at 250 Vac
Response time
8 sec at 500%
Voltage rating
250 Vac, 125 Vdc
Number of elements
Dual
Packaging type
Standard
Class
Class RK5
Connection
Ferrule end x ferrule end
Fuse indicator
Non-indicating
Low Voltage Branch Circuit Fuse Chapter
Low Voltage Branch Circuit Fuse Chapter
RoHS Search Tool
Bussmann series Fuseology
Bussmann series Fusetron FRN-R RK5 fuse data sheet for up to 60 amps No. 1019
Feature: Time-delay operation with dual-element construction. Business Impact: Tolerates inrush and short overloads without nuisance tripping, maintaining production line continuity and reducing downtime. Application: Motor starters, conveyors, and power feeds where startup surges are common. The result is improved equipment uptime and lower maintenance overhead. Feature: High interrupt ratings (200 kAIC at 250 Vac, 20 kAIC at 125 Vdc). Business Impact: Enhanced protection against catastrophic faults, enabling safer shutdowns and reduced risk of cascading failures. Application: Industrial control panels and branch circuits in harsh environments where fault duty is variable. Feature: 5 A amperage rating with RK5 Class. Business Impact: Precise protection for modest-load circuits while preserving service continuity in mixed-load panels. Application: Control circuits, signaling, and instrumentation ports that require reliable discrimination. Feature: Ferrule-end to ferrule-end connection with non-indicating indication. Business Impact: Simplifies replacement and inventory management, lowering maintenance time and error rates. Application: Standard field assemblies using Bussmann ferrule terminals. Feature: CE marking and RoHS compliance. Business Impact: Meets regulatory requirements and supports global supply chains, reducing compliance risk. Application: Global installations where regulatory conformity is mandated. Industry context: The FRN-R fuse is part of Eaton Bussmann’s RK5 family, well-regarded in electrical protection for its predictable response and data-sheet-backed performance. This makes it a trusted choice for engineers seeking a single, documented component across multiple machines and lines, from assembly cells to packaging lines.
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FAQs
FRN-R-5 fuses use ferrule-end terminals and come in a standard 3-inch depth with 0.81 inch height and width. For installation, verify ferrule compatibility with your panel bus bars, ensure correct orientation for heat dissipation, and refer to the Bussmann RK5 data sheets for the FRN-R-5 catalog number. This minimizes contact resistance and ensures consistent interrupt performance. Routine checks should include torque verification on terminal ferrules and inspection of the ferrule ends for alignment with the mating connectors.
The FRN-R-5 is rated for 5 A with a voltage rating of 250 Vac and 125 Vdc. It offers an interrupt rating of 200 kAIC at 250 Vac and 20 kAIC at 125 Vdc, with a response time of 8 seconds at 500% overload. These specs support protection for motors and drive circuits by allowing temporary inrush currents while rapidly interrupting sustained faults. When selecting, compare the motor startup current and available short-circuit current at your site to ensure the fuse provides adequate margin.
Yes. FRN-R-5 is a Class RK5 fuse with ferrule-end connections designed for Bussmann series RK5 assemblies. For compatibility and installation guidance, consult the Bussmann RK5 data sheet No. 1019 and the FRN-R RK5 fuse datasheet referenced in Eaton’s technical bulletins. This ensures correct selectivity, mounting, and replacement procedures across standard control panels and low-voltage branch circuits.
FRN-R-5 is CE marked, indicating compliance with essential health, safety, and environmental requirements recognized in the European market. It also aligns with RoHS expectations, supporting restricted use of certain hazardous substances. For regulated environments, this means smoother acceptance in product certifications and easier import compliance, reducing regulatory risk in multinational deployments.
Using FRN-R-5 can reduce downtime by tolerating startup surges without unnecessary trips, improving line efficiency in motor-driven applications. The 5 A rating matches moderate-load circuits while maintaining strong fault protection due to high interrupt ratings. Combined with easy installation and reliable CE/RoHS compliance, the fuse helps lower maintenance costs, extend equipment life, and simplify procurement through a standard, datasheet-backed component choice.