Eaton FRS-R-300 Fuse - RK5 Class, 200kA at 600V, CE
Part Number: FRS-R-300
Quick Summary
The Eaton FRS-R-300 fuse provides time-delay, current-limiting protection for industrial power circuits. Engineers face nuisance openings and costly downtime when fuses don’t handle transient surges or coordination properly. This device is CE marked, built as Class RK5 dual-element, and rated for 600 Vac / 300 Vdc, delivering reliable interrupting performance and cross-application compatibility. The RK5 family is known for selective coordination and fast fault clearing, reducing damage and maintenance costs. As part of the Bussmann Series, the FRS-R-300 supports standardization, easy sourcing, and predictable life-cycle costs in panel boards, motor control centers, and machine automation, improving uptime and safety with proven protection.
Product Information
Extended Description
FRS-R-300 Eaton: Eaton Bussmann Series Class RK5 fuse, FRS-R, time-delay, dual-element, current limiting fuse, 300 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-300
UPC
051712508513
Product Length/Depth
11.63 in
Product Height
0.81 in
Product Width
0.81 in
Product Weight
0.4 lb
Warranty
Not Applicable
Compliances
CE Marked
Amperage Rating
300 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
Time-delay, dual-element RK5 construction provides selective coordination and reduced nuisance trips, delivering predictable fault clearing and safer motor starts. This translates to fewer unplanned outages and extended equipment life, ideal for panel boards, MCCs, and branch circuits in industrial automation. The high interrupt ratings — 200 kAIC at 600 Vac and 20 kAIC at 300 Vdc — minimize arc energy and downstream damage during faults, supporting robust protection in high-demand settings. The 300 A amperage rating and 600 Vac / 300 Vdc capacity cover both AC and DC protection scenarios, enabling universal applicability in power distribution and machine tools. The non-indicating design simplifies stocking and replacement in fast-paced maintenance environments, while CE marking confirms European compliance. Compact dimensions (11.63 in x 0.81 in x 0.81 in) and a 0.4 lb weight ease retrofit into crowded switchgear and control panels. Integration with standard Bussmann-series protection schemes reduces procurement complexity and accelerates installation timelines.
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FAQs
The FRS-R-300 is a blade-end, dual-element RK5 Class fuse designed for standard Bussmann-series holders and panelboards. With a length of 11.63 in and a compact 0.81 in profile, it fits typical MCCs and control panels while maintaining compatibility with 600 Vac / 300 Vdc protection schemes. This facilitates straightforward replacement during maintenance and reduces downtime.
FRS-R-300 is rated for 300 A, with 600 Vac and 300 Vdc voltage ratings. It provides an interrupting capability of 200 kAIC at 600 Vac and 20 kAIC at 300 Vdc. The device is time-delay and dual-element, offering reliable fault clearance while accommodating motor inrush and transient events common in automation environments.
Yes. The FRS-R-300 is designed for motor control centers and branch circuits in industrial automation. Its RK5 dual-element design supports selective coordination, reducing arc energy and protecting downstream equipment. The 300 A rating and high interrupt levels make it well-suited for MCC protecting motors and drives in demanding production lines.
Yes. The FRS-R-300 is CE Marked and classified as Class RK5, which ensures compliance with European standards and predictable performance in branch circuits. Its dual-element design supports robust protection, while the 600 Vac / 300 Vdc rating covers both AC and DC applications commonly found in industrial control systems.
The non-indicating design simplifies stocking and field replacement, reducing maintenance complexity. Its reliable time-delay protection minimizes nuisance trips, decreasing downtime and extending equipment life. Integrated within the Bussmann Series, it supports standardized spares, streamlined procurement, and predictable lifecycle costs across panel boards, MCCs, and automation equipment.