Eaton FRS-R-3-1/2 Fuse - Class RK5, 600 Vac CE Marked
Part Number: FRS-R-3-1/2
Quick Summary
The Eaton FRS-R-3-1/2 fuse protects motors and controllers with time-delay RK5 protection. For engineers facing nuisance trips during motor start-up or transformer energization, this dual-element device minimizes interruptions and helps maintain line uptime. It is CE marked and rated for 600 Vac and 300 Vdc, with interrupt ratings of 200 kAIC at 600 Vac and 20 kAIC at 300 Vdc. With its compact 5 inch length and ferrule end connections, it fits standard Bussmann RK5 panels and simplifies replacements. This fuse offers reliable protection while enabling streamlined spares management in automation projects, delivering a balance of safety, efficiency, and cost control.
Product Information
Extended Description
FRS-R-3-1/2 Eaton: Eaton Bussmann Series Class RK5 fuse, FRS-R, time-delay, dual-element, current limiting fuse, 3.5 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-3-1/2
UPC
051712508193
Product Length/Depth
5 in
Product Height
0.81 in
Product Width
0.81 in
Product Weight
0.135 lb
Warranty
Not Applicable
Compliances
CE Marked
Amperage Rating
3.5 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
Low Voltage Branch Circuit Fuse Chapter
Low Voltage Branch Circuit Fuse Chapter
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 provides controlled response to startup surges. Impact — Minimizes nuisance trips, extending equipment life and reducing unplanned downtime. Application — Ideal for motor starters, transformers, and power-distribution panels in manufacturing. Feature — Current-limiting capability and high interrupt ratings. Impact — Safer fault clearing with reduced arc energy, protecting upstream devices. Application — Suitable for distribution blocks and heavy-load feeders in control rooms and machine shops. Feature — Class RK5 with ferrule end connections and standardized footprint. Impact — Easy retrofit and fast, reliable installation across Eaton Bussmann RK5 families. Application — Replacement in existing panels and new builds using RK5 compatible fuses in control cabinets. Feature — Compact 5 inch length and 0.81 inch square form-factor. Impact — Fits tight spaces in modern control enclosures, enabling denser panel design. Application — Modular panels in conveyors, presses, and packaging lines. Feature — 600 Vac / 300 Vdc rating and CE compliance. Impact — Broad system protection across AC and DC circuits with regulatory alignment. Application — Industrial drives, power supplies, and other mixed-voltage applications in Europe and North America. Feature — Non-indicating indicator; standard packaging. Impact — Low-maintenance operation with straightforward replacement logistics. Application — Suitable for non-indicating applications where status indication is managed by upstream monitoring.
Get a Quick Quote for a Eaton FRS-R-3-1/2
Chat with us on WhatsApp - fast responses guaranteed
Need to speak with someone? We'll call you back within 2 hours during business hours
Interested in Eaton FRS-R-3-1/2?
Enquire Now
FAQs
This fuse uses ferrule end terminations and a 5 in overall length, matching the RK5 family footprint. It enables straightforward field replacement in standard Bussmann RK5 panels and offers reliable mechanical fit in compact control cabinets, reducing panel rework time and ensuring consistent safety clearance.
The device is rated at 3.5 A with a voltage rating of 600 Vac and 300 Vdc. It provides 200 kAIC fault interruption at 600 Vac and 20 kAIC at 300 Vdc, with a time-delay response of about 10 seconds at 500% overload, balancing fast fault clearing with inrush tolerance.
Yes. The dual-element time-delay design handles motor start-up surges while protecting windings from short circuits. It fits motor starters and transformer protection schemes, reducing nuisance trips and extending equipment life in automation and packaging lines.
The FRS-R-3-1/2 is CE marked and belongs to the RK5 class of fuses. This combination supports regulatory compliance in European installations and aligns with common industrial protection standards used across global manufacturing facilities.
By delivering reliable time-delay protection with high interrupt ratings, this fuse minimizes unplanned downtime from startup transients, reduces spare-part fragmentation through RK5 compatibility, and supports easier maintenance planning in automated lines, ultimately lowering total cost of ownership.