Eaton FRS-R-1/4 Fuse - Class RK5, CE Marked, 600 Vac
Part Number: FRS-R-1/4
Quick Summary
The Eaton FRS-R-1/4 fuse provides time-delay, current-limiting protection for industrial control circuits. Nuisance trips during motor starts or surges are a major pain point, and this fuse minimizes downtime without compromising safety. It is CE Marked and built as a Class RK5 dual-element device with rugged interrupt ratings up to 200 kAIC at 600 Vac and 20 kA at 300 Vdc. With ferrule-end connections, a compact 5 in length (0.81 in wide) and straightforward installation, it integrates smoothly into standard panel assemblies for reliable branch-circuit protection. This solution supports uptime, reduces nuisance faults, and preserves equipment in automotive, industrial automation, and process control environments.
Product Information
Extended Description
FRS-R-1/4 Eaton: Eaton Bussmann Series Class RK5 fuse, FRS-R, time-delay, dual-element, current limiting fuse, 0.25 A, non-indicating fuse, interrupting rating of 200 kA at 600 Vac and 20 kA at 300 Vdc
Product Name
Eaton Bussmann series FRS-R fuse
Catalog Number
FRS-R-1/4
UPC
051712507974
Product Length/Depth
5 in
Product Height
0.81 in
Product Width
0.81 in
Product Weight
0.15 lb
Warranty
Not Applicable
Compliances
CE Marked
Amperage Rating
0.25 A
Interrupt rating
20 kAIC at 300 Vdc 200 kAIC at 600 Vac
Response time
10 sec at 500%
Voltage rating
600 Vac, 300 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 FRS-R 600 V Class R up to 60 A fuse data sheet no. 1017
Feature: Time-delay, dual-element design. Business Impact: Reduced nuisance tripping during startup and short surges while maintaining robust protection. Application: Motor starters, pumps, fans, and other inductive loads in control panels. Feature: Current-limiting and high interrupt rating. Business Impact: Limits fault energy, protects downstream devices, and improves safety margins in high-inrush scenarios. Application: feeders, power distributions, and safety circuits in industrial plants. Feature: 600 Vac / 300 Vdc rating and 200 kAIC at 600 Vac, 20 kAIC at 300 Vdc. Business Impact: Reliable fault clearing in diverse power environments, enabling compliant protection schemes. Application: branch circuits across automation racks and machine controls. Feature: Ferrule-end x ferrule-end connections and 5 in length with 0.81 in width. Business Impact: Easy field installation and quick replacement, reducing downtime. Application: retrofit projects and new panel builds using standard RK5 holders. Feature: Non-indicating, standard packaging. Business Impact: Clean panel presentation and simple maintenance checks without visual fuse status indicators. Application: compact control enclosures and modular panels in manufacturing environments.
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FAQs
The FRS-R-1/4 uses ferrule-end x ferrule-end connections and a 5 in overall length, designed for standard RK5 fuse holders in control panels. It fits common Bussmann RK5 mounting patterns and simplifies field replacement with a compact, non-indicating body that minimizes panel intrusion.
It carries a 0.25 A amperage rating, is rated for 600 Vac and 300 Vdc, and provides high interrupt ratings of 200 kAIC at 600 Vac and 20 kAIC at 300 Vdc, with a 10-second response at 500% overload.
Yes, the fuse is CE Marked and built to the Class RK5 specification, indicating compliance with essential health and safety requirements for electrical equipment used in Europe and other markets that recognize CE.
Ideal for motor protection, control panels, and branch-circuit protection in automation environments, including manufacturing lines, process control systems, and power distribution within control cabinets.
Its time-delay, dual-element design reduces nuisance trips, while the high interrupt ratings and ferrule-end construction simplify replacement and upgrades. This translates to lower downtime, extended equipment life, and a favorable total cost of ownership in factory automation projects.