Eaton FRN-R-50ID Fuse - RK5 Class, CE Marked
Part Number: FRN-R-50ID
Quick Summary
The Eaton FRN-R-50ID fuse is a time-delay protection device for branch circuits in industrial power systems. Engineers often struggle with nuisance interruptions and coordination gaps during startup surges and mixed-load protection. CE Marked status and the RK5 class design provide confidence in compliance and selective protection, while the ferrule-end connections and indicating option simplify installation and fault locating. This compact, current-limiting fuse supports reliable, code-compliant protection in control panels and distribution enclosures, enabling safer startups and reduced downtime across industrial facilities.
Product Information
Extended Description
FRN-R-50ID Eaton: Eaton Bussmann Series Class RK5 fuse, FRN-R, time-delay, dual-element, current limiting fuse, 50 A, indicating fuse, interrupting rating of 200 kA at 250 Vac and 20 kA at 125 Vdc
Product Name
Eaton Bussmann series FRN-R fuse
Catalog Number
FRN-R-50ID
UPC
051712204460
Product Length/Depth
2 in
Product Height
0.56 in
Product Width
0.56 in
Product Weight
0.5 lb
Warranty
Not Applicable
Compliances
CE Marked
Amperage Rating
50 A
Interrupt rating
20 kAIC at 125 Vdc 200 kAIC at 250 Vac
Response time
10 sec at 500%
Voltage rating
250 Vac, 125 Vdc
Number of elements
Dual
Packaging type
Standard
Class
Class RK5
Connection
Ferrule end x ferrule end
Fuse indicator
Non-indicating With Indicator
Bussmann Full Line Catalog
Bussmann Full Line Catalog
RoHS Search Tool
Bussmann series Fuseology
Bussmann series Fusetron FRN-R RK5 fuse data sheet for up to 60 amps No. 1019
Feature: Time-delay, dual-element design provides staged protection and arc-quenching resilience → Business Impact: minimizes nuisance trips during inrush, improves selectivity for downstream devices, and reduces unplanned downtime → Application: suitable for motor loads and mixed-load branch circuits in industrial automation. Feature: 50 A rating with a 200 kAIC at 250 Vac and 20 kAIC at 125 Vdc interrupt capability → Business Impact: robust fault-current handling limits damage to feeders and equipment, lowering repair costs and maintenance intervals → Application: protection for high-energy feeders and critical control circuits. Feature: Ferrule end x ferrule end termination with compact 2 in length and 0.56 in square footprint → Business Impact: easy, reliable terminations in crowded panels and control cabinets, speeding assembly and service → Application: retrofit and new installations in electrical protection and circuit control environments. Feature: Indicator option (With Indicator) in the FRN-R family → Business Impact: quick fault identification and reduced diagnostic time, increasing uptime and safety → Application: field service and regulatory inspections where rapid fault localization matters. Feature: CE Marked compliance and RK5 class designation with standard packaging → Business Impact: accelerates approval cycles, ensures compatibility with Bussmann-series catalogs, and simplifies stocking for OEMs and integrators → Application: industrial automation rooms, switchgear assemblies, and standalone protection modules.
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FAQs
FRN-R-50ID uses ferrule-end terminations with a compact 2 inch body and 0.56 inch width/height. For panel installations, ensure compatible ferrule wiring, verify correct polarity and clearances, and follow standard enclosure wiring practices. The standard packaging supports straightforward replacement in existing RK5-based Bussmann circuits, reducing retrofit effort.
The fuse is a 50 A time-delay, dual-element, current-limiting device. It offers an interrupt rating of 200 kAIC at 250 Vac and 20 kAIC at 125 Vdc, with a response time of about 10 seconds at 500% overload. Voltage rating is 250 Vac / 125 Vdc, and the product is designed to balance fast protection with nuisance-survival during surges.
Yes. Its time-delay design accommodates motor inrush and startup surges while maintaining protection for downstream devices. The high interrupt rating minimizes fault propagation, making it appropriate for branch circuits feeding motors and control gear in industrial automation panels, as long as the load and coordination requirements align with RK5 protection strategy.
FRN-R-50ID is CE Marked, reflecting European compliance. It belongs to the RK5 fuse family, which is a widely used standard in Bussmann-series products. Additional compliance data, including RoHS considerations, can be explored via Eaton’s RoHS information tools for detailed regulatory alignment and documentation.
Datasheets and catalogs are accessible via Eaton’s Bussmann resources: the Bussmann Full Line Catalog and the bus-ele-ds-1019 FRN-R RK5 fuse data sheet for 1–60 A. These documents provide detailed ratings, timing, and mounting guidance to support engineering calculations, panel design, and spare-part planning.