Eaton FRN-R-45ID Fuse - Class RK5, 45 A
Part Number: FRN-R-45ID
Quick Summary
Eaton FRN-R-45ID fuse provides time-delay current-limiting protection for industrial control panels and modular power circuits. This addresses nuisance trips and unnecessary downtime caused by startup surges in modern machinery. CE marked and classified within the Class RK5 family, it supports European and global deployments with robust interrupt ratings up to 200 kAIC at 250 VAC and 20 kAIC at 125 VDC. By choosing this FRN-R RK5 fuse, your panel design benefits from consistent protection, easier sourcing, and reduced maintenance cycles, while maintaining compatibility with ferrule-end terminations and standard mounting footprints.
Product Information
Extended Description
FRN-R-45ID Eaton: Eaton Bussmann Series Class RK5 fuse, FRN-R, time-delay, dual-element, current limiting fuse, 45 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-45ID
UPC
051712204453
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
45 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 → Business Impact → Application: Time-delay, dual-element FRN-R fuse reduces nuisance trips during startup of motor drives and automation modules, delivering stable operation and longer equipment life in harsh industrial environments. This improves system reliability for panel builders and integrators, particularly in machine tools and packaging lines needing predictable protection. Feature → Application: 45 A rating aligns with common control circuit protections, enabling precise fuse sizing and safer short-circuit clearance in DC bus and AC branch circuits. Benefit: lower downtime and safer maintenance windows in control panels, with compatible ferrule-end connections for quick installation and reduced labor costs. Feature → Application: Interrupt ratings of 200 kAIC at 250 VAC and 20 kAIC at 125 VDC ensure robust fault clearance in high-energy systems, supporting compliant power distribution and motor control centers. Feature → Application: 2 in length and standard packaging enable straightforward retrofit in existing assemblies without enclosure modifications. Feature → Application: Optional indicating or non-indicating fuse indicators streamline fault location and diagnostics on busy lines.
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FAQs
Power down the panel and verify the circuit is de-energized. Confirm the amperage rating (45 A) and ferrule-end connections match the existing fuse. Align with Class RK5 specifications, insert fully, and secure with proper torque. If using an indicating variant, ensure the indicator is visible for rapid fault location.
It is a 45 A time-delay, dual-element current-limiting fuse with voltage ratings of 250 VAC and 125 VDC. It provides 200 kAIC interrupt rating at 250 VAC and 20 kAIC at 125 VDC, with a 10-second response at 500% overload, and the option for indicating or non-indicating fuse indicators.
Yes. The 45 A, time-delay RK5 fuse is well-suited for motor control centers, drive panels, and DC bus protection where startup surges occur, while delivering fast fault clearing for safety and uptime in industrial environments.
The FRN-R-45ID is CE marked and part of the Class RK5 Bussmann family, ensuring European compliance and standardized protection characteristics for common panel and branch circuits.
By reducing nuisance trips with time-delay protection and enabling quick diagnostics via indicators, maintenance windows are shortened, MTTR decreases, and overall uptime improves—contributing to lower operating costs and higher system reliability.