Eaton FRN-R-450 Fuse - Class RK5, 200 kAIC at 250 Vac
Part Number: FRN-R-450
Quick Summary
FRN-R-450 fuse is a time-delay, dual-element protective device for branch circuits in electrical panels. Engineers often struggle with nuisance trips when protecting high-inrush loads, risking downtime and equipment wear. This product carries CE marking and follows the RK5 fuse standard, aligning with European safety requirements and interchangeable Bussmann RK5 devices; RoHS compliance information is available through Eaton's RoHS tool. For procurement teams, the 450 A rating and blade-end connection enable straightforward installation, predictable coordination, and scalable protection across multiple panels. This combination supports safer commissioning, easier spare parts planning, and faster downtime recovery for critical production lines. It also simplifies budgeting by aligning with standard RK5 accessories and catalog references.
Product Information
Extended Description
FRN-R-450 Eaton: Eaton Bussmann Series Class RK5 fuse, FRN-R, time-delay, dual-element, current limiting fuse, 450 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-450
UPC
051712507547
Product Length/Depth
10.38 in
Product Height
2.88 in
Product Width
2.88 in
Product Weight
3.1 lb
Warranty
Not Applicable
Compliances
CE Marked
Amperage Rating
450 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
Bussmann Full Line Catalog
Bussmann Full Line Catalog
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 provides current-limiting protection for circuits with motor inrush and heavy startup loads. Business impact: it minimizes nuisance trips while preserving fast isolation of faults, improving line uptime and equipment longevity. Application: ideal for motor starters, conveyors, and control panels in manufacturing settings where inrush is common. The amperage rating of 450 A with a 200 kAIC interrupt rating at 250 Vac delivers robust branch-circuit protection. Business impact: higher fault-current capability reduces the risk of uncontrolled arcing and equipment damage, supporting safer operation and lower maintenance costs. Application: suitable for large control cabinets and feeder lines in automation facilities. Blade-end x blade-end connections ensure straightforward replacement and easy integration with standard RK5 holders, lowering spare parts inventory and installation effort. Business impact: faster commissioning and simplified stocking. Application: replacement in existing RK5 fuse panels without adapters. The 10-second response at 500% fault current provides predictable coordination with upstream devices, enabling selective protection and minimized downtime. Non-indicating fuse design reduces the need for visual status checks; use diagnostic tools to confirm operation during routine maintenance. Application: automated maintenance workflows in process industries. Finally, its compact form factor and standard packaging support easy mounting and logistics within Bussmann RK5 protection families.
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FAQs
Yes. FRN-R-450 uses blade-end x blade-end connections that are designed for RK5 carriers and standard Bussmann panels. It fits in Eaton Bussmann RK5 compatible holders without adapters, simplifying replacement, inventory management, and service planning for industrial control panels.
FRN-R-450 provides a 450 A amperage rating with a 200 kAIC interrupt rating at 250 Vac, and a 10 second response at 500% fault current. This combination supports reliable protection for motor starters and inrush-heavy loads while minimizing nuisance trips during startup sequences.
The product specification lists a voltage rating of 250 Vac and 125 Vdc, indicating suitability for both AC branch circuits and DC control circuits in appropriate configurations. Verify system voltage and coordination with upstream devices to ensure proper selective protection for your equipment.
FRN-R-450 is CE marked, aligning with European safety standards. Additional compliance resources are available via Eaton’s RoHS information tool, and the fuse belongs to the RK5‑class protection family, ensuring compatibility with RK5 catalogs and standard accessories.
The fuse delivers reliable time-delay protection for inrush loads, reducing nuisance trips and downtime. Its robust interrupt ratings and standard RK5 compatibility simplify maintenance, spare parts planning, and panel scalability, resulting in lower maintenance costs and faster line recovery during faults.