Eaton FRS-R-2-1/4 Fuse - Class RK5, 2.25 A, 600 Vac
Part Number: FRS-R-2-1/4
Quick Summary
The Eaton Bussmann FRS-R-2-1/4 fuse provides time-delay protection for industrial branch circuits. Engineers often contend with nuisance trips and space constraints in control panels. Class RK5 certification, CE marking, and a 600 Vac rating deliver safe, reliable protection across global installations. This two-element, non-indicating fuse simplifies panel design and procurement, delivering consistent performance for motor drives, transformers, and power distribution. Leveraging the Bussmann series enables easier stocking and maintenance, reducing downtime and optimizing total cost of ownership. In practice, its 2.25 A rating and 200 kA interrupt at 600 Vac handle quick overloads while preventing nuisance outages.
Product Information
Extended Description
FRS-R-2-1/4 Eaton: Eaton Bussmann Series Class RK5 fuse, FRS-R, time-delay, dual-element, current limiting fuse, 2.25 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-2-1/4
UPC
051712508155
EAN
5027590426626
Product Length/Depth
5 in
Product Height
0.81 in
Product Width
0.81 in
Product Weight
0.145 lb
Warranty
Not Applicable
Compliances
CE Marked
Amperage Rating
2.25 A
Interrupt rating
200 kAIC at 600 Vac 20 kAIC at 300 Vdc
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
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Bussmann series Fuseology
Bussmann series FRS-R 600 V Class R up to 60 A fuse data sheet no. 1017
Time-delay, dual-element design: Enables inrush current tolerance for motor and transformer loads, reducing nuisance trips while maintaining protection. Business impact: smoother startup sequences and higher equipment uptime in automation cells; Application: motor starters and power feeds in manufacturing lines. 2.25 A current rating: Matches accurate protection for sensitive sensors and control circuits without over-tripping, lowering replacement costs and maintenance intervals. Application: instrumentation loops and PLC input protection in panel assemblies. 200 kA interrupt rating at 600 Vac: Provides robust fault current protection for critical feeders and switchgear, improving safety and reducing arc-flash risk. Business impact: enhanced system resilience and compliant fault clearing; Application: distribution blocks and feeder circuits in process automation. Ferrule end x ferrule end connections: Ensures quick, reliable installation with existing RK5 families and minimal tooling. Application: plug-and-play replacement in standard control panels. Class RK5, CE marked: Supports global manufacturing and regulatory compliance, streamlining audits and supplier qualification. Application: plants with ISO, IEC, and regional CE requirements. Non-indicating design: Reduces nuisance indicators and simplifies visual inspection in busy enclosures. Application: compact panel layouts where indicators are not required. Overall, the FRS-R-2-1/4 integrates seamlessly with Eaton Bussmann series fuses, delivering measurable outcomes in efficiency, uptime, and total cost of ownership.
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FAQs
The FRS-R-2-1/4 uses ferrule end connections, matching standard RK5 fuse holders. Ensure correct orientation in the fuse block and provide adequate clearance for heat dissipation. The dual-element, time-delay design tolerates inrush without compromising protection, enabling straightforward replacement with compatible Bussmann RK5 fuses. Proper panel labeling and adherence to CE-listed installation practices help maintain compliance.
This fuse is rated for 2.25 A with an interrupt rating of 200 kAIC at 600 Vac and 20 kAIC at 300 Vdc. It supports 600 Vac and 300 Vdc applications and has a response time of about 10 seconds at 500% overload. Such specifications enable safe protection for diverse industrial circuits, including motor loads and power distribution components, while minimizing nuisance trips.
Yes. This fuse uses ferrule-end terminations compatible with the Bussmann RK5 family, allowing easy substitution in existing panels and boards without changing mounting hardware. Its Class RK5 designation ensures predictable coordination with other RK5 devices, improving protection selectivity and simplifying spare parts stocking for global operations.
Ideal for motor starters, transformers, and power distribution blocks within automotive, process, and manufacturing automation. The time-delay characteristic handles inrush currents common to motors, while the 2.25 A rating provides precise protection for control circuits. Its CE marking and RK5 class support reliable, compliant protection across international facilities.
The fuse is CE-marked and part of the RK5 class family, ensuring regulatory alignment for many regions. Its non-indicating design reduces wiring clutter, while dual-element construction minimizes nuisance trips and maintenance costs. Over time, this translates to lower downtime, fewer panel replacements, and a lower total cost of ownership in mid- to high-volume automation environments.