Eaton FRN-R-1-4/10 Fuse - RK5 Time-Delay, 250V
Part Number: FRN-R-1-4/10
Quick Summary
FRN-R fuse provides time-delay overcurrent protection for control panels and branch circuits. Engineers often battle nuisance trips and poor selectivity when protecting mixed loads, risking downtime and extended outages. This Class RK5, CE-marked device delivers reliable current-limiting protection with dual-element construction and robust interrupt ratings, supporting EU and global standards. With its compact form, ferrule-to-ferrule connection, and standard packaging, it offers easy integration, reducing installation time while improving protection for industrial controls and motor circuits.
Product Information
Extended Description
FRN-R-1-4/10 Eaton: Eaton Bussmann Series Class RK5 fuse, FRN-R, time-delay, dual-element, current limiting fuse, 1.40 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-1-4/10
UPC
051712507110
EAN
5027590426060
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
1.40A
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
Bussmann Full Line Catalog
Bussmann Full Line Catalog
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, current-limiting design provides steadier fault clearing and reduced nuisance trips, boosting equipment uptime and process reliability in machines and panels. Application: Use in control panels and small motor circuits where transient inrush is common, ensuring selective protection without sacrificing safety. Feature → Business Impact → Application: 1.40A amperage rating enables precise protection for low-current control circuits, reducing unnecessary component replacement while preserving line power for critical loads. Application: Sensor networks and logic controllers in automation cabinets. Feature → Business Impact → Application: High interrupt rating of up to 200 kAIC at 250Vac and 20 kAIC at 125Vdc enhances protection for feeders and distribution points against short-circuit events. Application: Main panels and branch circuits in industrial environments. Feature → Business Impact → Application: Class RK5 construction with ferrule-end connections simplifies installation and improves contact reliability, reducing maintenance time. Application: Retrofit or new builds in panels with standard Bussmann/FRN-R fuse holders. Feature → Business Impact → Application: CE compliance signals regulatory alignment for EU projects, facilitating procurement and cross-border deployment in manufacturing facilities. Application: Global manufacturing lines requiring standardized protection. Feature → Business Impact → Application: Non-indicating design lowers part costs and simplifies stock management, while still delivering reliable protection for critical loads. Application: Replacement in legacy systems where indication is not required.
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FAQs
FRN-R-1-4/10 uses ferrule-end x ferrule-end connections and a 2 inch length with 0.56 inch width and height, matching standard RK5 fuse holders. This ensures straightforward drop-in replacement in compatible panels, minimizing downtime and permitting quick upgrades without modifying wiring. Check that your block is rated for Class RK5 devices and ferrule termini.
Key specs include a 1.40A amperage rating, voltage rating of 250Vac / 125Vdc, and an interrupt rating of 200 kAIC at 250Vac and 20 kAIC at 125Vdc. It is a time-delay, dual-element, current-limiting fuse under Class RK5, designed to handle transient inrush while protecting circuits from sustained faults.
Yes. The device is CE-marked, meeting EU safety and conformity standards for electrical protection devices. This supports compliant procurement and installation in EU-based manufacturing and machinery, ensuring alignment with regulatory expectations for protective fuses in control panels.
By combining time-delay protection with high interrupt ratings, the fuse reduces nuisance trips and short-circuit damage, lowering unplanned downtime and maintenance needs. Its compact RK5 form and ferrule terminations speed installation, reducing labor costs during panel upgrades or new builds.
Because FRN-R-1-4/10 is non-indicating, regular visual checks are limited; rely on a periodic test regimen or panel monitoring to confirm circuit integrity. The dual-element, current-limiting design supports reliable protection without frequent reselection, and standard packaging facilitates quick stock replacement when service is required.