Eaton FRN-R-250 Fuse - RK5 Class Time-Delay, 250 A
Part Number: FRN-R-250
Quick Summary
The Eaton FRN-R-250 fuse provides time-delay current-limiting protection for industrial control circuits. In demanding environments, nuisance trips and short device life erode uptime and drive maintenance costs. This FRN-R RK5 class device is CE marked and offers rapid response with a 200 kAIC interrupt rating at 250 VAC (and 20 kAIC at 125 Vdc), supporting reliable motor and power protection. With its dual-element construction and blade-end connections, installation is straightforward and panel fatigue is minimized. For design engineers and procurement teams, this combination translates to higher reliability, lower total cost of ownership, and easier regulatory compliance across control panels.
Product Information
Extended Description
FRN-R-250 Eaton: Eaton Bussmann Series Class RK5 fuse, FRN-R, time-delay, dual-element, current limiting fuse, 250 A, non-indicating fuse, interrupting rating of 200 kA at 250 Vac and 20 kA at 250 Vdc
Product Name
Eaton Bussmann series FRN-R fuse
Catalog Number
FRN-R-250
UPC
051712507509
Product Length/Depth
0.5 in
Product Height
1 in
Product Width
1 in
Product Weight
0.896 lb
Warranty
Not Applicable
Compliances
CE Marked
Amperage Rating
250 A
Interrupt rating
200 kAIC at 250 Vac 20 kAIC at 125 Vdc
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, dual-element design. This feature mitigates inrush currents common to motors, reducing nuisance trips and protecting conductors. The business impact is improved line uptime and longer fuse life in high-startup-load environments. Application: motor control centers, conveyors, and pumps in manufacturing facilities rely on reliable protection from this RK5 fuse. High current capability with strong fault protection. The 250 A amperage rating paired with a 200 kAIC interrupt rating at 250 VAC delivers robust protection against high fault currents, minimizing equipment damage and downtime. This is essential for main feeders and power distribution in industrial plants. Application: switchgear, panel boards, and MCCs where rapid fault clearing matters. Compact RK5 class package. The fuse’s blade-end connections and a compact 0.5 in depth, plus 1x1 in footprint, simplify panel layout and wiring, reducing enclosure space requirements and installation time. Application: retrofits and new builds in control panels with tight space constraints. CE marked for compliance and traceability. The FRN-R-250 meets European safety expectations, enabling streamlined procurement and regulatory acceptance across multi-site projects. This, combined with non-indicating indicators and standard packaging, minimizes maintenance complexity. Application: distributed control systems, PLC panels, and automation racks across facilities. Reliable, versatile protection. By integrating this fuse into typical Bussmann-series installations, engineers gain consistent performance, simplified spares management, and predictable lifecycle costs. Application: broad industrial automation deployments demanding consistent protection and ease of replacement.
Get a Quick Quote for a Eaton FRN-R-250
Chat with us on WhatsApp - fast responses guaranteed
Need to speak with someone? We'll call you back within 2 hours during business hours
Interested in Eaton FRN-R-250?
Enquire Now
FAQs
FRN-R-250 is a blade-end, Class RK5 time-delay fuse designed for Eaton Bussmann FRN-R RK5 family. It suits motor control panels, switchgear, power distribution blocks, and control circuits rated up to 250 VAC and 125 Vdc within its specifications. The blade-end connection simplifies replacement, reduces panel modification, and enables quick upgrades in existing enclosures.
The time-delay, dual-element design tolerates typical motor inrush without tripping, minimizing nuisance trips and preserving conductor protection during startup. This improves line uptime for conveyors, pumps, and fans while still delivering fast clearing for sustained faults. In practice, it lowers maintenance costs and extends motor life by avoiding unnecessary outages during normal operation.
Yes, the FRN-R-250 is CE marked, which indicates conformity with European safety standards and facilitates cross-border procurement. For project teams, CE marking supports regulatory compliance and supplier qualification, enabling smoother integration into multi-country builds and ensuring consistent protection device performance across panels and MCCs.
Blade-end fuses require compatible blade terminals and proper fuse clips or holders to ensure secure contact and heat dissipation. Verify correct orientation and ensure the interrupt rating matches operating conditions. The FRN-R-250’s compact 0.5 in depth and 1x1 in footprint help fit standard panels with minimal clearance, simplifying retrofits and new installations alike.
While the unit price may be higher than basic fuses, the FRN-R-250 reduces downtime risk due to its high interrupt rating and minimizes nuisance trips thanks to time-delay operation. Its CE compliance and compact form factor streamline procurement and panel assembly, translating to lower installation labor costs and a favorable long-term total cost of ownership for MCCs and control panels.