Eaton FRN-R-500 Fuse - Class RK5, 200 kAIC
Part Number: FRN-R-500
Quick Summary
The Eaton FRN-R-500 fuse provides reliable Class RK5 protection for industrial panels and motor circuits. Nuisance trips and slow fault isolation cost uptime, so a time-delay, dual-element design minimizes those events while preserving line protection. This device is CE marked and RoHS compliant, helping you meet European regulatory requirements and environmental standards. With blade-end connections and a 500 A rating, it integrates seamlessly into standard Bussmann RK5 holders. By combining current limiting with fast fault clearing, it supports uptime targets, reduces maintenance labor, and simplifies spares management for electrical distribution and machine builders.
Product Information
Extended Description
FRN-R-500 Eaton: Eaton Bussmann Series Class RK5 fuse, FRN-R, time-delay, dual-element, current limiting fuse, 500 A, non-indicating fuse, interrupting rating of 200 kA at 250 Vac and 20 kA at 250 Vdc
Product Name
Eaton Bussmann series FRN-R fuse
Catalog Number
FRN-R-500
UPC
051712507554
Product Length/Depth
10.38 in
Product Height
2.38 in
Product Width
2.38 in
Product Weight
3.1 lb
Warranty
Not Applicable
Compliances
CE Marked
Amperage Rating
500 A
Interrupt rating
200 kAIC at 250 Vac 20 kAIC at 125 Vdc
Response time
10 sec at 500%
Voltage rating
250 Vac, 125 Vdc
Number of elements
Dual
Packaging type
Standard
Class
Class RK5
Connection
Blade end x blade end
Fuse indicator
Non-indicating
Bussmann Full Line Catalog
Bussmann Full Line Catalog
RoHS Search Tool
Bussmann series Fuseology
Bussmann series Fusetron FRN-R RK5 fuse data sheet for fuses 70 to 600 amps No. 1020
Feature → Business Impact → Application: Time-delay, dual-element FRN-R design reduces nuisance tripping during motor inrush and short overloads, improving line availability and reducing unplanned downtime in manufacturing lines and packaging equipment. Application: motor control panels and power distribution where inrush is common. Feature → Business Impact → Application: 500 A amperage rating with current-limiting capability delivers controlled fault clearance, protecting conductors and devices while minimizing equipment damage during short circuits. Application: large motors, drives, and feeders in process plants. Feature → Business Impact → Application: High interrupt rating (200 kAIC at 250 Vac) provides robust short-circuit protection in high-energy areas, supporting safer cabinets and compliant installations. Application: switchgear enclosures and centralized control panels. Feature → Business Impact → Application: Blade-end connections and standard RK5 compatibility simplify retrofits and new builds, reducing installation time and stock variety. Application: OEM assemblies and field service projects. Feature → Business Impact → Application: CE Marking and RoHS compliance align with regulatory expectations and sustainability goals, easing procurement for European operations. Application: multinational facilities and design-for-regulatory markets.
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FAQs
The FRN-R-500 uses blade-end connections designed for standard RK5 fuse holders. Ensure the holder matches the RK5 class, align polarity where required, and securely seat the fuse until it locks. Verify circuit ratings (500 A, 250 Vac) and check that the panel bus bars and enclosure clearance meet the fuse’s dimensions for safe operation.
Key ratings include 500 A amperage, 250 Vac voltage, 125 Vdc capability, 200 kAIC interrupt rating at 250 Vac and 20 kAIC at 125 Vdc, along with a time-delay, dual-element design that provides current limiting and selective fault clearing within Class RK5.
Yes. The time-delay, dual-element design of FRN-R-500 is specifically intended to tolerate motor inrush while still delivering fast fault clearing, making it well-suited for motor protection in control panels and drive applications.
The FRN-R-500 is CE marked and RoHS compliant, which supports regulatory alignment for European markets and environmental standards. These certifications help with supplier approvals, reduce compliance risk, and streamline procurement in multinational projects.
The fuse’s current-limiting and time-delay features minimize nuisance trips and provide predictable fault clearing, reducing downtime and maintenance labor. Its robust interrupt rating and compatibility with standard RK5 holders help lower spares costs and simplify replacements, delivering a favorable total cost of ownership over time.