Eaton KTN-R-2 Fuse for 250V fast-acting Class RK1
Part Number: KTN-R-2
Quick Summary
The Eaton KTN-R-2 fuse provides fast-acting, current-limiting protection for panel boards and motor control systems. In many facilities, small control circuits suffer nuisance trips or undetected faults that damage equipment and slow throughput. This Class RK1 device delivers a 2 A rating and a 200 kA interrupting rating at 250 VAC, supporting safe, dependable outages in compact enclosures. The rejection-style design simplifies orientation and replacement, while standard packaging makes it easy to source alongside other Bussmann series components. Engineers and buyers gain consistent performance, traceability, and reduced downtime when selecting the KTN-R-2 for panel protection. Together with its current-limiting action, the fuse helps optimize preventive maintenance plans and spare-parts inventories across automation projects.
Product Information
Extended Description
KTN-R-2 Eaton: Eaton Bussmann Series Class RK1 fuse, KTN-R, fast-acting, current limiting fuse, 2 A, rejection style fuse, interrupting rating of 200 kA at 250 Vac
Product Name
Eaton Bussmann series KTN-R fuse
Catalog Number
KTN-R-2
UPC
051712407311
EAN
5027590446129
Product Length/Depth
2 in
Product Height
0.56 in
Product Width
0.56 in
Product Weight
0.025 lb
Warranty
Not Applicable
Compliances
Not Applicable
Amperage Rating
2 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: Fast-acting, current-limiting protection. Business Impact: Limits fault energy quickly to minimize arcing, insulation stress, and heat buildup, protecting downstream components and reducing the risk of collateral damage. Application: Ideal for compact control panels and small motor circuits where space is at a premium and fast clearout is essential. Feature: 2 A amperage rating at 250 V with 200 kA interrupting capability. Business Impact: Provides reliable protection for low-current circuits while maintaining high fault current withstand, enhancing overall system safety and uptime. Application: Suitable for auxiliary control circuits, sensing lines, and signal conditioning in automation equipment. Feature: Class RK1, fast-acting, current-limiting fuse with rejection-style form. Business Impact: Ensures correct orientation during replacement and simplifies inventory management by aligning with Bussmann series families. Application: Replacement workflows in panel assemblies and control cabinets across industrial plants. Feature: Single-element, non-indicating fuse with standard packaging. Business Impact: Reduces installation errors and streamlines stocking, enabling quick swaps and predictable maintenance cycles. Application: Routine maintenance in OEM panels and retrofit projects where common form factors are required. Feature: Compact physical footprint (2 in length, 0.56 in both width and height). Business Impact: Enables better packing density in crowded enclosures, lowering enclosure costs and improving air circulation. Application: Space-constrained motor starters, PLC-based control panels, and compact power distribution blocks.
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FAQs
KTN-R-2 is designed to fit standard Bussmann RK1 fuse holders and shares the same form factor as other RK1 devices. Its 2 A, 250 V ratings and rejection-style design simplify retrofits in panel boards and motor control applications, ensuring alignment with existing Bussmann RK1 inventories and minimizing replacement delays during upgrades.
At 250 VAC, the KTN-R-2 provides a 2 A current rating with a robust 200 kA interrupting rating, offering fast fault isolation. This combination reduces fault energy transfer, protects conductors and components, and supports reliable operation in automation panels where short-circuit events must be contained quickly.
Yes. The KTN-R-2’s fast-acting, current-limiting behavior is well-suited for motor control centers and panel boards where precise protection and rapid interruption are critical. Its Class RK1 classification and compact size enable efficient coordination with upstream protective devices and easy integration into small to medium control panels.
The key classification is Class RK1, indicating its place in Eaton Bussmann’s RK1 family of fast-acting fuses. The device is designed for 2 A at 250 V operation with a 200 kA interrupting rating, and it uses a rejection-style, single-element construction, typical for RK1 protective devices in industrial applications.
Using the KTN-R-2 can reduce downtime by providing reliable, rapid fault isolation, limiting collateral damage to panels and motors. Its compact form, standard packaging, and Bussmann compatibility simplify stocking and replacements, lowering maintenance complexity and spare-parts costs in ongoing automation projects.