Eaton FRS-R-8 Fuse - RK5 Class, 200 kAIC at 600 Vac
Part Number: FRS-R-8
Quick Summary
The Eaton FRS-R-8 fuse is a time-delay protection device designed for branch circuits and control panels in industrial environments. It helps engineers avoid nuisance trips during motor start-up while preserving protection against faults. This RK5-class, CE-marked current-limiting fuse supports regulatory compliance and predictable coordination in assemblies; RoHS verification can be checked via Eaton's RoHS Search Tool. For procurement and maintenance teams, the ferrule-end connections, standard 7.88 in length, and compact 1.11 in profile simplify replacement in existing Bussmann RK5 installations, driving lower downtime and easier spare parts management.
Product Information
Extended Description
FRS-R-8 Eaton: Eaton Bussmann Series Class RK5 fuse, FRS-R, time-delay, dual-element, current limiting fuse, 8 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-8
UPC
051712508261
Product Length/Depth
7.88 in
Product Height
1.11 in
Product Width
1.11 in
Product Weight
0.4 lb
Warranty
Not Applicable
Compliances
CE Marked
Amperage Rating
8 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 RK5 design. Benefit: Tolerates motor inrush and surge events without sacrificing fault protection, reducing unplanned shutdowns in manufacturing lines. Application: Motor control centers and branch-circuit protection where inrush is common and reliability is critical. Feature: 8 A amperage rating. Benefit: Provides precise protection for low-to-medium current circuits while enabling selective coordination with upstream protection. Application: Control panels and machine control circuits requiring calibrated current protection. Feature: Very high interrupt rating up to 200 kAIC at 600 Vac (and 20 kA at 300 Vdc). Benefit: Superior fault-current handling minimizes equipment damage and arc energy in short circuits. Application: Power distribution and high-energy fault environments in industrial facilities. Feature: Time-delay response time of 10 seconds at 500% overload. Benefit: Allows safe fault clearance behavior during transient faults, reducing unnecessary trips. Application: Heavy-duty loads and equipment with inrush phenomena in process industries. Feature: Ferrule end x ferrule end connection with standard packaging. Benefit: Easy installation and replacement with common Bussmann RK5 compatible clips, shortening maintenance windows. Application: Replacements in legacy RK5 installations and plug-in fuse blocks. Feature: CE Marked with standard Bussmann RK5 class. Benefit: Regulatory alignment across regional panels and streamlined supplier qualification. Application: Global manufacturing environments seeking reliable, certified protection devices.
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FAQs
The FRS-R-8 uses ferrule end x ferrule end connections and ships in standard Bussmann RK5 form factor, with a length of 7.88 in and a square 1.11 in profile. It is sized to drop into common RK5-compatible fuse blocks and clips, simplifying replacement without the need for adapters or re-wiring.
Key ratings include 8 A nominal current, 600 Vac and 300 Vdc voltage ratings, and an interrupt rating of 200 kAIC at 600 Vac with 20 kAIC at 300 Vdc. The fuse provides a time-delay response of about 10 seconds at 500% overload, balancing protection with tolerance for inrush events.
Yes. Its time-delay, dual-element RK5 design accommodates motor start-up surges and inrush currents while offering high fault-current interruption. It’s well-suited for motor control centers, equipment feeders, and branch circuits where reliable protection and selective coordination are required.
The FRS-R-8 is CE marked, aligning with global regulatory expectations for electrical protection devices. RoHS verification can be checked via Eaton’s RoHS Search Tool, helping buyers confirm material restrictions and compliance during supplier qualification and procurement.
By reducing nuisance trips through time-delay protection, the FRS-R-8 minimizes unplanned downtime and extends equipment life. Its standardized RK5 form factor simplifies stocking and replacement, lowers maintenance time, and improves overall equipment availability in automated production lines.