Eaton FRN-R-3/10 Fuse - RK5 time-delay, 0.3A, 250VAC, CE
Part Number: FRN-R-3/10
Quick Summary
The Eaton FRN-R-3/10 fuse is a time-delay, current-limiting protector for industrial control circuits. It helps engineers reduce nuisance trips during motor startup by allowing brief inrush events while maintaining fault protection. CE marked and Class RK5 aligned, it delivers predictable coordination in 250 Vac and 125 Vdc systems. The compact 2-inch body with a finger-safe dual-element design simplifies installation in standard control panels, saving space and labor. This Eaton Bussmann series fuse supports reliable sourcing across the same product family, providing a consistent protection solution for automation cabinets. In demanding environments, FRN-R-3/10 helps minimize downtime and maintenance costs while delivering dependable circuit protection for mission-critical machinery.
Product Information
Extended Description
FRN-R-3/10 Eaton: Eaton Bussmann Series Class RK5 fuse, FRN-R, time-delay, dual-element, current limiting fuse, 0.3 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-3/10
UPC
051712507035
EAN
5027590426213
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
0.3 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
Fuse indicator
Non-indicating
Special features
Finger safe
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
Time-delay, dual-element design enables controlled response during startup with inrush currents, reducing nuisance tripping while preserving protection during faults. This improves equipment uptime and reduces service calls in machine control panels and motor circuits. Current-limiting action constrains fault energy, protecting wiring and downstream devices from short-circuit events, which translates to longer conductor life and fewer cascaded faults in automation systems. Class RK5 alignment ensures standardized protection coordination with other Bussmann series devices, simplifying panel design and stock management while maintaining regulatory compliance in industrial applications. The compact 2-inch form factor and finger-safe construction ease installation in dense panels and enclosure backs; the non-indicating indicator reduces visual clutter while enabling quick fault diagnosis. CE marking confirms conformity to international safety standards, supporting global deployment in automation networks and plant-wide safety programs. The FRN-R-3/10’s robust performance supports lifecycle cost reductions by lowering downtime, simplifying maintenance, and ensuring predictable protection across diverse loads in utility and manufacturing environments.
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FAQs
Install the FRN-R-3/10 into compatible Bussmann RK5 fuse holders or universal holders designed for 2 inch, dual-element RK5 fuses. Ensure correct voltage rating (250 Vac / 125 Vdc) and secure the fuse in a fiber- or phenolic-based holder. The finger-safe, non-indicating design simplifies handling and reduces enclosure contamination during replacement, while the compact size aids in dense panel layouts.
This fuse provides time-delay operation with current-limiting capability, guarding motors and control circuits during startup surges. It features an amperage rating of 0.3 A and high interrupt ratings of 200 kAIC at 250 Vac and 20 kAIC at 125 Vdc, ensuring rapid fault isolation while accommodating brief inrush currents typical of motor loads.
Best suited for industrial control panels, small motor starter circuits, and branch circuits where inrush is expected but fast fault clearance is required. Its RK5 class and CE marking make it a dependable choice for machine automation, conveyor systems, and downstream protection in 24/7 manufacturing environments.
Yes. The FRN-R-3/10 is CE marked and Classified as Class RK5, aligning with Eaton Bussmann’s RK5 fuse family. This ensures consistent protection coordination, easier stocking, and compliance with international safety expectations across European and global deployments in automation equipment.
The fuse reduces downtime by limiting nuisance trips during startup while still protecting against faults, lowering maintenance costs and unplanned outages. Its compact form factor speeds installation, minimizes panel alterations, and leverages existing Bussmann RK5 stock, providing predictable lifecycle costs and fast ROI for control panels and machine builders.