Eaton FRN-R-90 Fuse - RK5 Time-Delay, 200 kAIC at 250 Vac
Part Number: FRN-R-90
Quick Summary
The Eaton FRN-R-90 fuse provides time-delay protection for motors and branch circuits in industrial power systems. Nuisance trips during startup or miscoordination with upstream devices can drive unplanned downtime and maintenance costs. The FRN-R is CE marked and RoHS compliant, with Class RK5 construction ensuring reliability in harsh industrial panels. Designed for integration in Eaton Bussmann RK5 offerings, it supports fast fault clearance while enabling selective coordination across a shared protective scheme. This makes FRN-R-90 a compelling choice for panel builders looking to simplify sourcing while meeting global standards. Its 90 A rating with 250 Vac compatibility supports a broad range of low-voltage, current-limited fault protection scenarios.
Product Information
Extended Description
FRN-R-90 Eaton: Eaton Bussmann Series Class RK5 fuse, FRN-R, time-delay, dual-element, current limiting fuse, 90 A, non-indicating fuse, interrupting rating of 200 kA at 250 Vac
Product Name
Eaton Bussmann series FRN-R fuse
Catalog Number
FRN-R-90
UPC
051712507424
Product Length/Depth
5.88 in
Product Height
1 in
Product Width
1 in
Product Weight
0.3 lb
Warranty
Not Applicable
Compliances
CE Marked
Amperage Rating
90 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
Blade end x blade 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 fuses 70 to 600 amps No. 1020
Time-delay operation with a dual-element design delivers precise protection during motor inrush. The business impact is fewer nuisance trips during startup and improved selectivity with upstream protectors, which translates to less downtime and lower maintenance costs. This makes the Eaton FRN-R RK5 fuse ideal for motor protection in control panels, drives, and HVAC equipment where startup torque must be managed without compromising short-circuit protection. 90 A at 250 Vac provides a robust compatibility envelope for mid-sized equipment. The business impact is extended component life and predictable protection for power distribution circuits. Applications include 3-phase motor circuits, pumps, and conveyors in manufacturing environments where reliability is essential. High interrupt rating of 200 kAIC at 250 Vac means the fuse can safely interrupt large fault currents. This reduces arcing risk and protects downstream devices, enabling safer switchgear and panelboard operation in facilities with high fault potential. Blade end x blade end connections provide fast, plug-in replacement with standard RK5 holders. The business impact is streamlined installation and service, minimizing downtime during maintenance windows. Typical applications include OEM panels and retrofit projects in automated lines and packaging systems. Non-indicating fuse indicators minimize panel clutter, which can simplify installation in space-constrained control tops. This reduces visual inspection time and supports cleaner cabinets, while external monitoring options can be used for status signaling. Applications span compact control panels and remote-mount protection assemblies. CE marking and RoHS compliance ensure regulatory readiness across global markets. Together with Class RK5 construction, these fuses meet industry standards for reliability and compatibility in industrial automation. Applications range from global manufacturing sites to multi-plant deployments requiring standardized protective components.
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FAQs
FRN-R-90 is designed for blade end x blade end connections in RK5 fuse blocks, making it a seamless replacement for standard Bussmann RK5 fuses in control panels and motor starter cabinets. Its dual-element, time-delay construction accommodates motor inrush while preserving fast fault clearance, reducing downtime in automated lines.
FRN-R-90 is rated for 90 A and 250 Vac, with an interrupt rating of 200 kAIC at 250 Vac and 20 kAIC at 125 Vdc. It is a dual-element, current-limiting fuse offering time-delay response, ideal for handling motor inrush currents without nuisance trips.
Yes. FRN-R-90’s 90 A rating at 250 Vac and time-delay, dual-element design suits motor protection in 3-phase panels, contactors, and drives. Its high interrupt rating supports reliable fault clearing in systems with substantial inrush, while preserving downstream device integrity.
FRN-R-90 carries CE marking and RoHS compliance, reflecting regulatory readiness for global deployments. The RK5 class designation reinforces compatibility with Bussmann RK5 protection schemes in industrial automation environments.
The time-delay, dual-element design minimizes nuisance trips during startup, reducing downtime and maintenance costs. Quick plug-in replacement via blade-end connections lowers service time, while reliable protection improves equipment life and reduces total cost of ownership in motor-driven applications.