Eaton FRS-R-350 Fuse - Class RK5, 350A, CE Marked
Part Number: FRS-R-350
Quick Summary
FRS-R-350 fuse provides fast-acting protection for industrial circuits and motor feeders in Eaton Bussmann protection systems. The design addresses the common pain point of nuisance tripping during inrush events by using a time-delay, dual-element architecture that tolerates startup surges without compromising protection. CE marking confirms European safety compliance, and Class RK5 construction supports reliable coordination across panels and feeders in modern electrical installations. Rated at 350 A with 600 Vac / 300 Vdc capability, this fuse delivers dependable protection, supports compliance initiatives, and reduces maintenance costs through longer intervals between replacements. Its non-indicating form factor and blade-end connections simplify field installation and retrofit in legacy equipment, enabling faster commissioning and minimized downtime.
Product Information
Extended Description
FRS-R-350 Eaton: Eaton Bussmann Series Class RK5 fuse, FRS-R, time-delay, dual-element, current limiting fuse, 350 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-350
UPC
051712508520
Product Length/Depth
11.63 in
Product Height
2.34 in
Product Width
2.34 in
Product Weight
0.00052 lb
Warranty
Not Applicable
Compliances
CE Marked
Amperage Rating
350 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
Blade end x blade 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 65-600 A fuse data sheet no. 1018
Feature: Time-delay, dual-element design → Business Impact: Tolerates motor startup inrush without nuisance trips, increasing line reliability → Application: Motor feeders and power distribution panels. Feature: 350 A amperage rating with current-limiter capability → Business Impact: Protects high-load circuits while minimizing arc flash energy → Application: Large industrial drives and feeders. Feature: High interrupt ratings of 200 kAIC at 600 Vac and 20 kAIC at 300 Vdc → Business Impact: Robust short-circuit protection for critical applications and reduced downtime → Application: Data centers, processing lines, and heavy machinery. Feature: Non-indicating, blade-end x blade-end connection → Business Impact: Easy retrofit and quick field replacement with minimal downtime → Application: Standard Bussmann RK5 compatible equipment. Feature: Class RK5 construction with CE marking → Business Impact: Reliable coordination and European compliance for panel builds and cross-border installs → Application: New installs and upgrades following industry standards. Feature: 11.63 in length, 2.34 in width, 2.34 in height, blade-end configuration → Business Impact: Predictable form factor supports clean enclosures and straightforward stocking from Bussmann catalogs → Application: Panel-mounted protection solutions. Considerations: For objections about compatibility, this fuse aligns with Bussmann full-line catalogs and standard RK5 footprints, enabling rapid sourcing and consistent maintenance planning.
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FAQs
The FRS-R-350 uses blade end x blade end connections and follows the Class RK5 construction, making it compatible with standard Bussmann RK5 compatible equipment and panels. It supports 600 Vac and 300 Vdc systems, and its 350 A rating suits motor feeders and distribution panels in industrial environments.
The time-delay dual-element design tolerates motor inrush and startup surges, reducing nuisance tripping while still providing fast interruption during sustained faults. With a 10-second response characteristic at 500% and a 350 A rating, it protects equipment without interrupting normal operation.
Yes. Designed for motor feeders and panel protection, the 350 A, 600 Vac / 300 Vdc rating, and dual-element time-delay provide reliable startup handling while maintaining robust fault protection. The high interrupt rating and RK5 class support selective coordination in modern electrical installations.
The FRS-R-350 is CE marked, confirming compliance with European safety standards for electrical protection devices. Its RK5 class and non-indicating design further support standardized panel installations and straightforward field retrofits in compliant environments.
The fuse reduces unplanned downtime by tolerating inrush without nuisance trips, enabling more stable production. Its durable Class RK5 form factor and standardized blade-end connections shorten maintenance cycles, simplify stocking from the Bussmann catalog, and improve uptime and overall equipment efficiency.