Eaton FRN-R-1/4 fuse - Class RK5 for panels CE Marked
Part Number: FRN-R-1/4
Quick Summary
Eaton FRN-R-1/4 fuse protects industrial control circuits with time-delay, dual-element protection for panelboards and motor starters. Sizing for varying loads and nuisance tripping is a common challenge in modern control panels, and this fuse helps engineers tune protection to actual inrush without sacrificing safety. CE Marked and RK5-class architecture enable predictable protection during motor startups and fault conditions. Designed for control cabinets and machine safety loops, it delivers robust performance with predictable lifecycle costs and reduced maintenance.
Product Information
Extended Description
FRN-R-1/4 Eaton: Eaton Bussmann Series Class RK5 fuse, FRN-R, time-delay, dual-element, current limiting fuse, 0.25 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-1/4
UPC
051712506946
EAN
5027590426084
Product Length/Depth
0.56 in
Product Height
2 in
Product Width
0.56 in
Product Weight
0.5 lb
Warranty
Not Applicable
Compliances
CE Marked
Amperage Rating
0.25 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
Time-delay, dual-element construction delivers selective protection that tolerates motor inrush without tripping, boosting uptime in conveyors and pump circuits. By aligning protection with actual load behavior, it reduces nuisance trips while preserving safety and compliance in panel assemblies. Current-limiting performance minimizes fault energy and helps protect downstream devices and wiring during faults. The FRN-R-1/4 carries 0.25 A and delivers 200 kAIC at 250 Vac and 20 kAIC at 125 Vdc, ensuring reliable fault clearance in industrial plants. RK5 class architecture provides consistent protection and predictable coordination, while ferrule-end terminations simplify field wiring. The ferrule ends speed installation and improve termination reliability in restricted cabinet spaces. Non-indicating design reduces visual maintenance needs, and the compact footprint fits tight control cabinets alongside other Bussmann series devices. Standard packaging and dual-element construction support flexible panel layouts and easy replacement. Compliance documentation and catalogs from Eaton, including the RK5 FRN-R data sheet, help engineers maintain regulatory readiness. This fuse’s combination of precise protection and easy integration translates into lower total cost of ownership over the device lifecycle.
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FAQs
Yes. The FRN-R-1/4 is a Class RK5 time-delay fuse with ferrule-end terminations designed for RK5 fuse blocks. Its dual-element construction and standard ferrule connections simplify mounting, wiring, and replacement in control panels and motor-control centers.
Key specs include 0.25 A amperage, 250 Vac / 125 Vdc voltage rating, 200 kAIC interrupt rating at 250 Vac, 20 kAIC at 125 Vdc, and an approximate 8-second response time at 500% overload. This combination supports reliable fault clearing with controlled inrush tolerance in industrial applications.
Yes. The time-delay, dual-element FRN-R-1/4 is well-suited for motor starters, conveyors, and pumps in automation panels. Its RK5 class design provides selective protection, reducing nuisance trips during startup while safeguarding conductors and downstream devices.
The FRN-R-1/4 is CE Marked, indicating European conformity. It is part of Eaton's RK5 Bussmann series, with documentation and catalogs available for compliance reviews. No UL/CSA listing is stated in the provided data; verify requirements with your procurement team as needed.
The non-indicating design minimizes unnecessary visual inspections, while the time-delay feature reduces nuisance trips, improving uptime. Its compact ferrule-end construction and robust interrupt ratings help extend equipment life and lower maintenance costs by preventing arc and conductor damage during faults.