Eaton KTN-R-35 Fuse - Class RK1, 200 kA, 250 V
Part Number: KTN-R-35
Quick Summary
KTN-R-35 fuse provides fast-acting current-limiting protection for industrial electrical circuits. This design helps minimize nuisance trips that cause unplanned downtime while safeguarding critical controls. It belongs to the Class RK1 family with a 35 A, 250 V rating and a robust 200 kA interrupting capability for high-energy faults. The ferrule-end connections and a 3 in body length enable straightforward integration into standard Bussmann assemblies, simplifying installation and replacement. Note that formal compliance marks aren’t listed in the provided data, but the RK1 platform is widely adopted in industrial panels. With a compact 0.81 in width and 0.81 in height and a 0.9 lb weight, it delivers reliable protection without footprint creep.
Product Information
Extended Description
KTN-R-35 Eaton: Eaton Bussmann Series Class RK1 fuse, KTN-R, fast-acting, current limiting fuse, 35 A, rejection style fuse, interrupting rating of 200 kA at 250 Vac
Product Name
Eaton Bussmann series KTN-R fuse
Catalog Number
KTN-R-35
UPC
051712407083
Product Length/Depth
3 in
Product Height
0.81 in
Product Width
0.81 in
Product Weight
0.9 lb
Warranty
Not Applicable
Compliances
Not Applicable
Amperage Rating
35 A
Voltage rating
250 V
Material
Melamine glass tube
Number of elements
1
Packaging type
Standard
Class
Class RK1
Connection
Ferrule end x ferrule end
Fuse indicator
Non-indicating
Special features
70/30 brass end cap
Low Voltage Branch Circuit Fuse Chapter
Low Voltage Branch Circuit Fuse Chapter
RoHS Search Tool
Bussmann series Fuseology
Bussmann series KTN-R 250 V Class R fuse data sheet no. 1043
Feature: Fast-acting, current-limiting protection → Business Impact: Short circuits are cleared rapidly to minimize energy wasted and equipment damage → Application: Panel boards and motor control centers benefit from reduced fault energy. Feature: 200 kA interrupting rating at 250 V → Business Impact: Higher fault withstand capacity reduces collateral damage and downtime → Application: Heavy-duty industrial drives and busways requiring robust protection. Feature: Class RK1 with ferrule end x ferrule end → Business Impact: Easy, secure installation and reliable electrical contact → Application: Retrofit and new builds in standard Bussmann fuse blocks. Feature: 3 in length, 0.81 in width/height, melamine glass tube, 70/30 brass end caps → Business Impact: Compact form factor supports dense panel layouts while maintaining mechanical durability and reliable connections → Application: Tight-spaces in control panels and power distributions. Feature: Single-element, non-indicating design → Business Impact: Simplified maintenance and quick replacement with clear warranties on performance → Application: Routine protection in non-indicating fuse applications. Feature: Standard packaging and compatibility with Eaton Bussmann ecosystems → Business Impact: Streamlined procurement and inventory control, lower total cost of ownership → Application: OEMs and facilities managers optimizing spares strategy.
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FAQs
Install the KTN-R-35 by aligning the ferrule ends with the corresponding fuse blocks, ensuring proper seating and contact pressure. Check that the panel’s Bussmann RK1 holders match the 3 in length and standard ferrule-end geometry. Use the standard packaging for replacement stock to simplify field maintenance.
Key specs include 35 A current rating, 250 V voltage rating, Class RK1 construction, and a 200 kA interrupting rating. The device is fast-acting and current-limiting, which minimizes fault energy and protects motor starters and drives from damage during short circuits.
Yes. The KTN-R-35 is designed for industrial protection across panel boards and motor control centers. Its current rating, interrupting capacity, and RK1 class features are compatible with standard 3-phase protection schemes commonly employed in industrial environments.
The provided data lists Class RK1 and electrical ratings, but formal compliance marks aren’t specified. In practice, RK1 devices are widely used in industry, but verify with your procurement team or Eaton for any region-specific certifications (UL/CE/CSA) required for your install base.
The single-element, non-indicating design reduces replacement complexity, while the 200 kA interrupting rating enhances fault tolerance, lowering downtime from faults. The compact form and ferrule-end design improve installation speed and stock efficiency, contributing to a favorable total cost of ownership over time.