Eaton KTN-R-8 Fuse - Class RK1, 8A 250V, 200 kA
Part Number: KTN-R-8
Quick Summary
Eaton KTN-R-8 fuse provides fast-acting overcurrent protection for control panels and automation equipment. In many installations, engineers wrestle with nuisance fuse trips and mismatched interrupting ratings that disrupt production and complicate maintenance. This device is a Class RK1 current-limiting fuse rated at 8 A and 250 V, with a high 200 kA interrupting capability, and downloadable RoHS compliance information from Eaton. While the data set does not list SIL, CE, or IP certifications, the RK1 architecture is a proven standard in industrial protection, offering predictable coordination with downstream breakers. Using KTN-R-8 simplifies part numbering and spares inventories across machine lines, improves safety margins in power-distribution panels, and supports efficient procurement for automation upgrades.
Product Information
Extended Description
KTN-R-8 Eaton: Eaton Bussmann Series Class RK1 fuse, KTN-R, fast-acting, current limiting fuse, 8 A, rejection style fuse, interrupting rating of 200 kA at 250 Vac
Product Name
Eaton Bussmann series KTN-R fuse
Catalog Number
KTN-R-8
UPC
051712407304
Product Length/Depth
2 in
Product Height
0.56 in
Product Width
0.56 in
Product Weight
0.047 lb
Warranty
Not Applicable
Compliances
Not Applicable
Amperage Rating
8 A
Voltage rating
250 V
Number of elements
1
Packaging type
Standard
Class
Class RK1
Fuse indicator
Non-indicating
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: Class RK1 current-limiting, fast-acting protection. Benefit: Reduces arc energy and improves selectivity, minimizing collateral damage in faults. Application: Control circuits and small drives in automated panels where precise interruption timing is essential. Feature: Amperage rating of 8 A and voltage rating of 250 V. Benefit: Suitable for typical control-circuit loads and low-to-moderate power distribution, with predictable fuse life cycles. Application: Machine controllers and I/O interfaces that require reliable protection without nuisance trips. Feature: High interrupting rating of 200 kA at 250 VAC. Benefit: Enhanced fault-current handling protects wiring and components in high-energy fault events. Application: Main feeder lines and branch circuits in automated systems subject to transient faults. Feature: Rejection-style fuse with 2 in length and compact form. Benefit: Easy replacement in crowded panel spaces and standardized stocking across multiple assemblies. Application: Enclosures with limited depth where quick swaps minimize downtime. Feature: Non-indicating design. Benefit: Simplifies panel aesthetics and reduces indicator chatter, while enabling assessment with test tools. Application: Routine maintenance and fault diagnosis in busy production lines.
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FAQs
KTN-R-8 is designed as a standard RK1 class fuse compatible with typical Bussmann RK1 holders used in industrial control panels. The 2 inch length and 0.56 inch width/height ensure straightforward installation in common fuse blocks, reducing the need for adapters. When replacing, verify mounting tension and holder alignment to avoid contact resistance and ensure a clean blow during fault events.
The KTN-R-8 fuse provides an 8 A amperage rating at 250 V with a current-limiting, fast-acting profile. It offers a high 200 kA interrupting rating at 250 VAC, supporting fast clearance of faults in power-distribution and control circuits. The device has a single element and a compact 2 in length, suitable for dense panel layouts.
Yes. With its Class RK1 current-limiting action and 200 kA interrupting rating, the KTN-R-8 is well-suited for control panels, motor starters, and PLC-protected circuits in automation environments. Its 8 A rating matches typical control loads, while the fast-acting characteristic minimizes downstream damage during faults in automated processes.
The data set specifies Class RK1 designation and RoHS-related resources are available via Eaton’s materials. Specific SIL, CE, or IP ratings are not listed in the provided data. To verify RoHS compliance and other regulatory statuses, use Eaton’s RoHS Search Tool linked in the downloads and consult the official Bussmann-series catalogs for regulatory mappings.
Adopting the KTN-R-8 can reduce downtime through reliable, predictable protection, lower nuisance trips, and standardized parts across panels. Its compact form reduces cabinet crowding, while its high interrupting rating protects wiring and components during fault events. Over time, this translates to less unscheduled maintenance, faster replacements, and more consistent spare-part planning.