Eaton KTN-R-200 Fuse - Class RK1, 200 kAIC
Part Number: KTN-R-200
Quick Summary
KTN-R-200 fuse protects high-current circuits in industrial power distribution, delivering fast-acting, current-limiting protection for panels and switchgear. Selecting the right fuse can be challenging when balancing fault energy, coordination, and physical fit within standard enclosures. This device leverages Class RK1 architecture with a 200 A rating and high interrupt capability to minimize damage and downtime. While the datasheet highlights Class RK1 applicability and rugged performance, users should verify regional CE/SIL/IP certifications as applicable to their installation. For engineers and procurement teams, the combination of a blade-end connection, compact form, and reliable Bussmann construction supports both compliant protection and ease of replacement across legacy and new installations. It also integrates smoothly with Eaton Bussmann Series protection strategies for scalable automation projects.
Product Information
Extended Description
KTN-R-200 Eaton: Eaton Bussmann Series Class RK1 fuse, KTN-R, fast-acting, current limiting fuse, 200 A, rejection style fuse, interrupting rating of 200 kA at 250 Vac and 100 kA at 250 Vdc
Product Name
Eaton Bussmann series KTN-R fuse
Catalog Number
KTN-R-200
UPC
051712407205
Product Length/Depth
7.1 in
Product Height
1.56 in
Product Width
1.56 in
Product Weight
1.01 lb
Warranty
Not Applicable
Compliances
Not Applicable
Amperage Rating
200 A
Interrupt rating
200 kAIC at 250 Vac 100 kAIC at 250 Vdc
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
RoHS Search Tool
Bussmann series Fuseology
Bussmann series KTN-R 250 V Class R fuse data sheet no. 1043
Feature: Class RK1 fast-acting, current-limiting protection. Benefit: Reduces fault energy and arc flash risk, helping protect downstream devices and enabling safer maintenance windows in automated lines. Application: Ideal for distribution panels and motor control centers where high fault currents can occur and fast clearing minimizes collateral damage. Feature: 200 A amperage rating with a 200 kAIC interrupt rating at 250 Vac and 100 kAIC at 250 Vdc. Benefit: Ensures reliable protection for high-load circuits and DC-rated sections, improving coordination with upstream protections and reducing total cost of ownership. Application: Suitable for mixed AC/DC systems in industrial facilities. Feature: Rejection style fuse with blade end x blade end connections and 70/30 brass end caps. Benefit: Secure mechanical fit, low contact resistance, and robust performance in harsh environments; simplifies field replacement. Application: Fits standard blade-fuse blocks in control panels and power distribution units. Feature: 7.1 in length, 1.56 in height and width, 1.01 lb weight. Benefit: Predictable footprint that fits within common enclosures and minimizes rework during retrofits. Application: Retrofit projects and new builds where form-factor consistency matters. Feature: Melamine glass tube construction with a single element. Benefit: Excellent insulation properties with reliable electrical isolation, supporting longer service life under fluctuating loads. Application: Industrial environments with elevated heat and vibration. Feature: Class RK1 designation and non-indicating fuse indicator. Benefit: Simplifies specification for standard protection schemes while enabling straightforward replacement. Application: Panels requiring consistent, well-understood RK1 protection across multiple circuits. Addressing common objections: If you’re concerned about DC performance, note the 100 kAIC rating at 250 Vdc ensures protection for many DC sections—but coordinate with downstream DC protections for full system safety. If space is tight, the 7.1 in length and standard blade connections enable quick swaps in common fuse blocks, reducing downtime during maintenance.
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FAQs
KTN-R-200 uses blade end x blade end terminals designed for standard Bussmann/RK1 compatible fuse blocks. Ensure the enclosure accepts a 7.1 inch long, 1.56 inch wide profile and that blade terminals are clean and aligned. Insert firmly until seated, then verify electrical continuity and correct circuit protection labeling during commissioning.
The KTN-R-200 provides an interrupt rating of 200 kAIC at 250 Vac, enabling rapid fault clearing in high-current circuits. For DC applications at 250 Vdc, the interrupt rating is 100 kAIC, which should be considered in DC-coordination studies and protective-device sequencing.
Yes, it is rated for 250 Vdc with a 100 kAIC interrupt capability. When designing DC circuits, ensure coordination with DC bus protection and downstream devices to maintain system safety. The fuse’s current-limiting properties help minimize arc energy and thermal stress, but DC applications often require stricter coordination than AC systems.
KT N-R-200 fits standard blade-end fuse blocks with a 7.1 inch length and 1.56 inch width/height. Its 70/30 brass end caps and single-element construction support reliable contact and ease of replacement. Verify enclosure clearance and mounting hardware compatibility, and ensure use of the correct RK1-series holders for proper safety labeling.
KTN-R-200 is part of the Bussmann Series RK1 family; while many RK1 fuses share form-factor, always confirm cross-compatibility with the specific fuse block manufacturer and enclosure. For reliability, prefer Eaton Bussmann RK1 components to maintain documented protection coordination and warranty alignment.