Eaton KTN-R-1 Fuse - Class RK1, 200 kA @ 250V
Part Number: KTN-R-1
Quick Summary
The Eaton Bussmann KTN-R-1 fuse protects electrical circuits in control panels with fast-acting current limiting. This helps prevent costly downtime by quickly clearing faults in critical machinery. While the data notes Class RK1 and a 200 kA interrupting rating at 250 Vac, specific CE/SIL/IP certifications aren’t listed, so installations should follow standard RK1 protection practices and vendor guidelines. In mission-critical applications, engineers rely on its ferrule-end connections and compact 2 in length to simplify installation while maintaining robust protection. Pair with Bussmann catalog products for extended protection strategies and streamlined spare-parts planning, delivering reliability across automation cabinets and industrial equipment.
Product Information
Extended Description
KTN-R-1 Eaton: Eaton Bussmann Series Class RK1 fuse, KTN-R, fast-acting, current limiting fuse, 1 A, rejection style fuse, interrupting rating of 200 kA at 250 Vac
Product Name
Eaton Bussmann series KTN-R fuse
Catalog Number
KTN-R-1
UPC
051712407007
Product Length/Depth
2 in
Product Height
0.56 in
Product Width
0.56 in
Product Weight
0.015 lb
Warranty
Not Applicable
Compliances
Not Applicable
Amperage Rating
1 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
With minimal time delay
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: 1 A fast-acting, current-limiting fuse provides rapid fault clearance. Business Impact: Reduced arc energy and minimized downstream damage translates to shorter downtime and lower repair costs. Application: Ideal for low-current control circuits in automation and switchgear. The 1 A rating paired with 250 V operation ensures precise protection of sensitive control electronics. Feature: Rejection style fuse with ferrule-end connections simplifies board-to-cable integration and field replacement. Business Impact: Faster installation, fewer mis-wires, and consistent contact reliability in crowded control panels. Application: Common in machine control enclosures and panel boards where secure ferrule termination is preferred. Feature: Class RK1 design with a 200 kA interrupting rating at 250 Vac delivers high fault tolerance. Business Impact: Higher resilience against short circuits reduces spectacle of arc events and equipment downtime. Application: Suitable for standard low-voltage branch circuits in commercial and industrial settings. Feature: Melamine glass tube construction combines rigidity with temperature stability. Business Impact: Enhanced durability in harsh environments lowers maintenance frequency. Application: Suitable for industrial environments with vibration and heat exposure. Feature: Compact 2 in length and standard packaging enable easy stocking and replacement. Business Impact: Reduced field rework and faster maintenance cycles. Application: Fits tight spaces in control panels and distribution boards, improving overall installation efficiency.
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FAQs
Install the KTN-R-1 using ferrule-end connections per standard RK1 procedures. Ensure the 2 in length fits the panel depth and that the ferrules are crimped securely to avoid loose connections. Use the correct amp rating of 1 A for the protected circuit and verify the wiring polarity and safety clearances before energizing.
The KTN-R-1 is a 1 A, 250 V fast-acting, current-limiting fuse with a 200 kA interrupting rating. It features a single element, ferrule-end termination, a melamine glass tube body, and a compact 2 in length. These specs support rapid fault clearance and reliable protection of low-current control circuits.
Yes. Its 1 A current rating and 200 kA interrupting capability at 250 Vac make it well-suited for protecting control circuits in automation equipment and machinery, where fast fault clearing minimizes downtime and protects sensitive components from short-circuit faults.
The provided data does not list specific CE, SIL, or IP certifications for the KTN-R-1. It is described as a Class RK1 fuse with a 200 kA interrupting rating. For regulatory compliance, verify with Eaton’s RoHS tools and your regional standards, and consult the catalog for any regional certifications that may apply.
Using the KTN-R-1 reduces downtime by quickly clearing faults, lowers arc-related damage, and simplifies spare-parts planning with a standard 2 in ferrule-end fuse. Reliability of ferrule connections minimizes field rework, while the compact form factor enables easier stocking and faster replacements, delivering measurable total-cost-of-ownership improvements.