Eaton FRN-R-1/8 Fuse - RK5 Time-Delay, 200 kAIC
Part Number: FRN-R-1/8
Quick Summary
Eaton FRN-R-1/8 fuse protects control panels with RK5 time-delay, dual-element protection. This device helps prevent nuisance trips during normal startup and brief inrush events, reducing downtime and maintenance costs. CE marking confirms European safety compliance, and RoHS alignment supports sustainability in modern plant environments. By delivering a precise 0.125 A protection while maintaining a high interrupt rating, this fuse enables reliable overcurrent protection without compromising system availability. When selecting fuses for control circuits, engineers value a compact form factor and robust RK5 compatibility, which translates to faster installation and lower assembly risk. The result is improved uptime and predictable protection for industrial automation applications.
Product Information
Extended Description
FRN-R-1/8 Eaton: Eaton Bussmann Series Class RK5 fuse, FRN-R, time-delay, dual-element, current limiting fuse, 0.125 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-1/8
UPC
051712506953
Product Length/Depth
2 in
Product Height
0.56 in
Product Width
0.56 in
Product Weight
0.5 lb
Warranty
Not Applicable
Compliances
CE Marked
Amperage Rating
0.125A
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
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: Time-delay, dual-element design with current-limiting capability. Business Impact: Enables safe handling of startup inrush while preventing nuisance tripping, reducing unplanned downtime. Application: Control circuits and motor starters in automation panels. Feature: 0.125 A amperage rating with 250 VAC / 125 VDC voltage ratings. Business Impact: Provides precise, low-current protection for sensitive electronics without nuisance outages. Application: Relay logic and control feeders in automated lines. Feature: High interrupt ratings of 200 kAIC at 250 VAC and 20 kAIC at 125 VDC. Business Impact: Supports robust protection in high fault-current environments, improving safety and downstream equipment protection. Application: Main feeder and control circuit protection in industrial plants. Feature: Compact RK5 form-factor (2 in length, 0.56 in by 0.56 in). Business Impact: Easier installation, better panel density, and straightforward replacement in standard fuse blocks. Application: Panelboards and compact control enclosures. Feature: Non-indicating status. Business Impact: Reduces component cost and space, with status monitored via separate indicators or clear diagnostics. Application: Large-scale assemblies requiring centralized monitoring. Feature: CE marked with RoHS alignment. Business Impact: Supports regulatory compliance and sustainability goals across regional footprints. Application: European and global manufacturing environments demanding formal compliance.
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FAQs
FRN-R-1/8 fuses install into RK5 fuse holders following the holder manufacturer's torque and insertion guidelines. Align the fuse with the contact blades, push firmly until seated, and verify full engagement with a simple continuity check. Use the standard Bussmann RK5 mounting hardware to ensure secure, vibration-resistant installation in control panels.
The FRN-R-1/8 offers an interrupt rating of 200 kAIC at 250 VAC and 20 kAIC at 125 VDC. It is rated for 250 VAC and 125 VDC operation, making it suitable for low-voltage DC control circuits and conventional AC control loads in industrial environments.
Yes. With time-delay, dual-element protection and a low 0.125 A rating, FRN-R-1/8 is well-suited for control circuits and motor starters where inrush is common. Its RK5 compatibility and high fault-current ratings help maintain uptime while protecting upstream devices from short-circuits and overloads.
FRN-R-1/8 carries CE marking, confirming compliance with European safety requirements. RoHS tooling and documentation indicate alignment with substance restrictions, supporting sustainable manufacturing practices and regulatory adherence in globally distributed systems.
Non-indicating fuses require external monitoring or indicators to confirm status. Plan for periodic inspection or integrate remote diagnostics in your panel. This approach minimizes visual inspection effort while maintaining clear fault diagnostics through the protection system and upstream monitoring devices.