Eaton KTN-R-600 Fuse - Class RK1, 200 kAIC at 250 Vac
Part Number: KTN-R-600
Quick Summary
The KTN-R-600 fuse from Eaton provides fast-acting current-limiting protection for industrial power distribution panels. Choosing the right interrupt rating and ensuring reliable operation under surge conditions can be a challenge for maintenance teams. The data indicates Class RK1, a 600 A rating, and a 200 kAIC interrupt capacity at 250 Vac (with 250 Vdc rating), but no CE, SIL, or IP certifications are listed. This combination supports robust, standardized protection in control panels and feeders, while the blade-end construction and 70/30 brass end caps simplify replacement and installation. In practical terms, it enables engineers to meet short-circuit needs without sacrificing ease of procurement or serviceability.
Product Information
Extended Description
KTN-R-600 Eaton: Eaton Bussmann Series Class RK1 fuse, KTN-R, fast-acting, current limiting fuse, 600 A, rejection style fuse, interrupting rating of 200 kA at 250 Vac
Product Name
Eaton Bussmann series KTN-R fuse
Catalog Number
KTN-R-600
UPC
051712407281
Product Length/Depth
10.38 in
Product Height
2.59 in
Product Width
2.59 in
Product Weight
3.25 lb
Warranty
Not Applicable
Compliances
Not Applicable
Amperage Rating
600 A
Interrupt rating
100 kAIC at 250 Vdc 200 kAIC at 250 Vac
Voltage rating
250 Vac, 250 Vdc
Material
Melamine glass tube
Number of elements
1
Packaging type
Standard
Class
Class RK1
Connection
Blade end x blade end
Fuse indicator
Non-indicating
Special features
70/30 brass end cap
Bussmann Full Line Catalog
Bussmann Full Line Catalog
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Bussmann series Fuseology
Bussmann series KTN-R 250 V Class R fuse data sheet no. 1043
Feature: Fast-acting, current-limiting RK1 design. Business Impact: Quickly clears faults and limits arc energy, protecting downstream motors, drives, and control electronics while reducing downtime. Application: Ideal for industrial branch circuits and panel protection where fast fault clearance is critical. Feature: High interrupt capacity of 200 kAIC at 250 Vac. Business Impact: Supports large fault currents common in industrial feeders, enhancing system resilience and upstream device safety. Application: Main feeders and distribution panels in harsh manufacturing environments. Feature: Class RK1 compatibility with blade-end x blade-end connections. Business Impact: Enables straightforward retrofit and standardized stocking across multiple sites, reducing downtime during replacements. Application: Replacement in existing RK1 holders with minimal modification. Feature: Construction with 70/30 brass end caps and a melamine glass tube. Business Impact: Improves contact reliability and heat dissipation, delivering stable performance over time. Application: Enclosures and cabinets subject to frequent cycling. Feature: Dimensional and weight compatibility for standard RK1 housings. Business Impact: Eases field installation and logistics, supports precise enclosure planning. Application: Rack, panel, or cabinet installations with limited space. This fusion of documented dimensions and materials also simplifies procurement workflows by aligning with Bussmann catalogs and datasheets.
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FAQs
The KTN-R-600 is a Class RK1, 600 A blade-end fuse with 70/30 brass end caps, designed for RK1 holders. Replace with the same amperage and voltage rating, verify a 200 kAIC interrupt rating at 250 Vac (and 250 Vdc rating as applicable), and ensure the length is 10.38 in with a 1-element construction for reliable operation.
A 200 kAIC interrupt rating at 250 Vac means the fuse can safely interrupt very high fault currents without internal damage, protecting upstream devices and reducing risk to the overall electrical system. This high capability is particularly valuable for feeders and panels in demanding industrial environments where fault energy may spike.
The KTN-R-600 is rated for 250 Vac and 250 Vdc, offering 100 kAIC at 250 Vdc. While it can handle DC up to 250 V, verify system conditions and drive cycles in your application, as DC fault characteristics differ from AC and can affect clearing behavior and timing.
Blade-end connections with 70/30 brass end caps provide robust, low-resistance contacts, improving reliability in vibration-prone environments. Ensure the RK1 holder is compatible, check enclosure clearance for a 10.38 in long fuse, and confirm a proper, straight insertion to prevent contact resistance or misalignment during maintenance.
Bussmann full-line catalogs and the KTN-R data sheets are available via Eaton’s resources. Access the Bussmann catalog PDFs for RK1 family details (bus-ele-cat-1007-flc-2018 and related sections) and the Bussmann 1043 data sheet for KTN-R specifics to support selection, replacement, and procurement workflows.