Eaton KTN-R-5 Fuse - Class RK1, 5 A, 200 kA
Part Number: KTN-R-5
Quick Summary
Eaton KTN-R-5 fuse is a fast-acting current-limiting device designed for protecting low-voltage branch circuits in industrial control panels. Engineers often struggle with nuisance fuse blows and mismatched protection when replacing aging fuses, leading to unplanned downtime and rework. This model is a Class RK1, with ferrule-end connections and a 200 kA interrupting rating at 250 V, featuring a melamine glass tube and 70/30 brass end caps for reliable mating. The compact 2 in length supports easy panel integration, while the rating and construction help meet common industry protection goals. By choosing this Bussmann series fuse, maintenance teams can streamline stocking, improve protection accuracy, and reduce total cost of ownership across mixed-panel environments.
Product Information
Extended Description
KTN-R-5 Eaton: Eaton Bussmann Series Class RK1 fuse, KTN-R, fast-acting, current limiting fuse, 5 A, rejection style fuse, interrupting rating of 200 kA at 250 Vac
Product Name
Eaton Bussmann series KTN-R fuse
Catalog Number
KTN-R-5
UPC
051712407298
EAN
5027590446211
Product Length/Depth
2 in
Product Height
0.56 in
Product Width
0.56 in
Product Weight
0.045 lb
Warranty
Not Applicable
Compliances
Not Applicable
Amperage Rating
5 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
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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 design. Business Impact: Reduces arc energy during faults and minimizes equipment damage, improving uptime in motors, drives, and control circuits. Application: Ideal for protecting 250 V branch circuits in industrial panels without excessive disruption. Feature: Class RK1 construction with ferrule-end connections. Business Impact: Simplifies field replacement and ensures reliable contact, reducing installation time and error. Application: Fits standard Bussmann RK1 holders and common panel geometries. Feature: High interrupting rating of 200 kA at 250 VAC. Business Impact: Enables safe interruption of high fault currents, enhancing system resilience in panel boards and feeders. Application: Suitable for heavy-duty manufacturing and process equipment. Feature: Compact footprint—2 in length, 0.56 in diameter. Business Impact: Saves panel space and enables denser layouts, reducing cabinet costs. Application: Compatible with compact control panels and retrofit installations. Feature: 70/30 brass end caps and non-indicating fuse indicator. Business Impact: Improves mechanical retention and reduces mis-insertion while keeping status discreet. Application: Useful in environments with frequent connector cycling. Feature: Melamine glass tube with a single element. Business Impact: Delivers reliable, predictable performance and repeatable protection. Application: Common for general-purpose branch-circuit fusing in electrical protection schemes.
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FAQs
Install the KTN-R-5 with ferrule-end connections as specified (ferrule end x ferrule end) and ensure a proper, unobstructed seating in compatible RK1 fuse holders. The fuse length is 2 inches with a diameter of 0.56 inches, and it uses a 70/30 brass end cap to aid retention and contact. Use the non-indicating variant in panels where fuse status is monitored externally. Always verify that the mounting environment supports the melamine glass tube construction.
The KTN-R-5 is rated for 5 amperes at 250 volts with a interruption rating of 200 kiloamperes at 250 VAC. It is a fast-acting, current-limiting fuse designed to protect low-voltage branch circuits in industrial control panels. Its single-element design in a melamine glass tube provides reliable performance, while its 2 inch length fits standard RK1 fuse holders in many panel configurations.
This fuse is commonly used to protect low-voltage branch circuits in industrial control panels, machine control circuits, and other electrical protection schemes within manufacturing and processing environments. Its Class RK1 construction and ferrule-end design make it suitable for retrofit or new installations where compact form factor and reliable protection are key requirements.
The provided data lists Compliances as Not Applicable, and there is no explicit mention of CE, UL, or IP certifications for this specific part. For detailed certification information, consult the Bussmann data sheet no. 1043 and the official Eaton catalogs to confirm current listings for your region and application.
Its 200 kA interrupting rating at 250 VAC enables safe, rapid interruption of high fault currents, protecting downstream equipment and reducing the risk of cascading damage. The rugged melamine glass tube, 70/30 brass end caps, and rejection-style design also help ensure secure mating and predictable performance across operating cycles, contributing to lower maintenance and replacement costs over time.