Eaton FRN-R-7-1/2 Fuse - RK5, 7.5A, 200 kAIC
Part Number: FRN-R-7-1/2
Quick Summary
FRN-R fuse from Eaton Bussmann delivers reliable overcurrent protection for control panels and motor drives. It is a time-delay, dual-element RK5 fuse designed to withstand short transients while safeguarding critical circuitry, reducing nuisance trips. The CE Marked compliance and RK5 class rating support safe European and global installations, with a non-indicating design that integrates cleanly into standard Bussmann RK5 patterns. With a 7.5 A amperage rating and high interrupt capability, this compact device protects feeders and starters without oversizing upstream protection. For engineers seeking efficiency and consistency, FRN-R-7-1/2 simplifies stocking, installation, and service life in panelboards and drive cabinets.
Product Information
Extended Description
FRN-R-7-1/2 Eaton: Eaton Bussmann Series Class RK5 fuse, FRN-R, time-delay, dual-element, current limiting fuse, 7.5 A, non-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-7-1/2
UPC
051712506977
EAN
5027590427562
Product Length/Depth
2 in
Product Height
0.56 in
Product Width
0.56 in
Product Weight
0.06 lb
Warranty
Not Applicable
Compliances
CE Marked
Amperage Rating
7.5 A
Interrupt rating
20 kAIC at 125 Vdc 200 kAIC at 250 Vac
Response time
8 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
Low Voltage Branch Circuit Fuse Chapter
Low Voltage Branch Circuit Fuse Chapter
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 construction provides selective protection by allowing temporary inrush and motor startup surges without tripping, which reduces downtime and extends equipment life. → This translates to improved machine availability and lower maintenance costs, especially in conveyor and pump circuits where inrush is common. Application: control panels and motor drives benefit from safer start-ups and fewer nuisance trips in industrial automation environments. Feature → High interrupt rating up to 200 kAIC at 250 Vac (and 20 kAIC at 125 Vdc) ensures safe fault clearance for feeders and downstream protection, minimizing damage and facilitating faster service restoration. → This is critical for equipment stacks in power-dense automation setups where fault currents can be unpredictable. Application: large motors, drives, and machine banks. Feature → 7.5 A amperage rating fits standard control circuits and motor starter protection, enabling compact, cost-effective protection without overengineering upstream fusing. → This supports lean inventory and simpler panel design, improving procurement cycles. Application: control cabinets and panelboards. Feature → Ferrule-end x ferrule-end connections and standard packaging support quick, repeatable installation and reliable electrical contact. → Installation is faster, with better terminal integrity and compatibility with common Bussmann RK5 distribution layouts. Application: modular panels and retrofit projects. Feature → Non-indicating fuse reduces panel clutter but can be monitored with downstream indicators or auxiliary monitoring for maintenance planning. → Helps keep control panels tidy while allowing scheduled verification through process instrumentation. Application: sealed or visible status environments where maintenance intervals are well-defined. Feature → Class RK5 and CE compliance provide industry-standard protection and regulatory alignment. → Ensures traceability, easier approval processes, and consistent performance across European and international installations. Application: general purpose protection in machinery and process equipment.
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FAQs
The FRN-R-7-1/2 is designed for protection in control panels, motor starters, and feeder circuits using ferrule-end connections. It aligns with standard Bussmann RK5 distribution patterns for easy drop-in replacement and reliable integration with common terminal blocks.
It is a time-delay, dual-element (fuse) that tolerates startup surges and short transients, reducing nuisance trips while maintaining protective coordination. This behavior helps protect motors and drives during normal startup events without sacrificing safety.
Yes, the FRN-R-7-1/2 carries CE marking, signifying compliance with applicable European directives, and is designed to meet RK5 class protection requirements for reliable performance in European and global applications.
The fuse provides 200 kAIC at 250 Vac and 20 kAIC at 125 Vdc. Use these ratings to select protection for high-fault-current feeders and circuits where rapid fault clearance is critical, ensuring downstream components remain protected during faults.
With ferrule-end connections and a compact 2.0 in length, 0.56 in height and width, it fits neatly in standard panel layouts. Its standard packaging and non-indicating design simplify replacement and space planning in panel assemblies and drive cabinets.