Eaton FRN-R-3 Fuse - Class RK5, 200 kAIC
Part Number: FRN-R-3
Quick Summary
Eaton FRN-R fuse is a time-delay protection device designed to safeguard electrical panels and machinery in industrial environments. This FRN-R-3 model provides reliable short- and long-term protection for circuit loads while accommodating inrush currents common in automation controllers and drives. The fuse is CE marked and RoHS searchable, aligning with global compliance expectations, and it belongs to the Class RK5 family for consistent sectional protection. With its 3 A rating and high interrupt capability, it delivers a strong balance of selectivity and protection. The FRN-R-3 supports efficient maintenance planning and lower total cost of ownership through reduced nuisance outages and easier spare-part management, while integrating smoothly with ferrule-end terminations in standard RK5 holders.
Product Information
Extended Description
FRN-R-3 Eaton: Eaton Bussmann Series Class RK5 fuse, FRN-R, time-delay, dual-element, current limiting fuse, 3 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-3
UPC
051712506991
Product Length/Depth
2 in
Product Height
0.56 in
Product Width
0.56 in
Product Weight
0.04 lb
Warranty
Not Applicable
Compliances
CE Marked
Amperage Rating
3 A
Interrupt rating
200 kAIC at 250 Vac 20 kAIC at 125 Vdc
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
Special features
Finger safe, power loss 3.48 w
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 → Business Impact → Application: Time-delay, dual-element construction provides improved fault tolerance and inrush handling, reducing nuisance tripping during startup sequences in automation equipment. This translates to higher machine uptime and lower maintenance costs in contract manufacturing lines and packaging systems. Feature → Application: 3 A amperage rating with a 250 VAC, 125 VDC rating combined with a 200 kAIC interrupt capability enables precise protection for control circuits and power distribution in modern control panels, improving system reliability and operator safety. Feature → Application: Non-indicating design simplifies device integration and reduces panel clutter, while finger-safe construction and ferrule-end connections streamline installation in standard RK5 fuse holders. Feature → Business Impact → Application: Time-delay protection helps protect motors, relays, and drives from short surges without compromising downstream devices, ensuring smoother start-ups and compliant protection in OEM equipment. Feature → Application: Class RK5 compatibility guarantees consistent protection across a family of Bussmann fuses, reducing spare-part diversity and streamlining procurement for panel builders and integrators. Feature → Business Impact → Application: Power loss of 3.48 W minimizes unnecessary heat in compact assemblies, supporting energy efficiency goals and safer enclosure temperatures in high-density panels.
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FAQs
FRN-R-3 uses ferrule-end terminations and fits standard RK5 fuse holders. With a 2 inch length, 0.56 inch width and 0.56 inch height, ensure proper clearance for heat dissipation and follow manufacturer mounting guidelines. Use compatible Bussmann RK5 holders and verify mechanical fit before panel assembly to prevent binding or arcing.
The FRN-R-3 is a 3 A, time-delay, dual-element, current-limiting fuse with a 250 VAC and 125 VDC rating and an interrupt rating of 200 kAIC at 250 VAC and 20 kAIC at 125 VDC. It features an 8 second response time at 500% overcurrent, aligning with protection needs for controlled inrush and fault conditions.
Yes. The time-delay, dual-element design enables selective interruption during short-duration inrush without tripping on normal startup surges. This makes FRN-R-3 appropriate for protection of motors, drives, and control circuits in automation lines where inrush is common, helping to avoid unnecessary downtime.
FRN-R-3 is CE marked and part of the Bussmann RK5 fuse family, providing recognized protection standards. RoHS compliance can be verified via Eaton's RoHS tool, ensuring suitability for environments with restricted substances. The device also carries non-indicating status and finger-safe features for safe handling.
Choosing FRN-R-3 supports higher uptime through reduced nuisance tripping, lower spare-part complexity with RK5 family compatibility, and robust protection against faults up to 200 kAIC. In production lines with frequent cycling or heavy startup loads, this translates to fewer outages, faster maintenance, and improved reliability metrics.