Eaton KTK-R-25 Fuse - 200 kAIC at 600V, UL Listed

Part Number: KTK-R-25
Manufacturer
Eaton
Part number
KTK-R-25

Quick Summary

KTK-R-25 fuse from Eaton is a fast-acting, current-limiting protection device for industrial controls panels and machinery. Engineers and procurement teams frequently contend with nuisance trips and difficult replacements in crowded enclosures, which drive downtime and maintenance costs. This part carries UL Listed, CSA Certified, and RoHS compliance marks, aligning with regulatory and environmental requirements across global sites. Its Class CC dual-element design delivers fast interruption and reliable protection for 600 V systems, while the ferrule-end connections simplify installation in standard Bussmann-series holders and support safer, more maintainable panel builds. This combination helps ensure safer operation, easier serviceability, and predictable protection across a broad range of industrial applications.

Product Information

Extended Description

KTK-R-25 Eaton: Eaton Bussmann Series Class CC fuse, KTK-R, fast-acting, dual-element current limiting fuse, 25 A, rejection style fuse, interrupting rating of 200kA at 600Vac
Product Name
Eaton Bussmann series KTK-R fuse
Catalog Number
KTK-R-25
UPC
051712420730
Product Length/Depth
1.5 in
Product Height
0.41 in
Product Width
0.41 in
Product Weight
0.18 lb
Warranty
Not Applicable
Compliances
RoHS Compliant CE Marked
Certifications
UL Listed CSA Certified
Type
Current-limiting fast-acting fuse
Special features
Rejection style
Application
Industrial controls panels and machinery, street lighting, general lighting, capacitors and distribution
Amperage Rating
25 A
Number of elements
Dual
Class
Class CC
Interrupt rating
200 kAIC
Fuse indicator
Non-indicating
Connection
Ferrule end x ferrule end Ferrule
Response time
See time current curve
Material
Melamine tube
Packaging type
Standard
Quantity
10
Voltage rating
600 V
Feature: Current-limiting, fast-acting operation delivers rapid fault isolation. Impact: By limiting let-through current, it protects conductors, fuses, and downstream electronics from damaging surge energy, reducing burnouts and unplanned downtime. Application: Ideal for 25 A, 600 V circuits in industrial controls panels, motor starters, and distribution blocks in harsh plant environments. Feature: Rejection-style design prevents incorrect fuse insertion. Impact: Improves safety and installation accuracy, lowering the risk of mispositioned fuses in high-density panels. Application: Particularly valuable in panel racks, enclosures, and retrofit projects where orientation and polarity matter. Feature: Class CC dual-element configuration with 200 kAIC interrupt rating. Impact: Delivers enhanced fault clearance, tighter current limiting, and improved protection for high-energy systems. Application: Suited for industrial machinery, capacitive banks, and heavy-distribution circuits that demand robust protection. Feature: Ferrule-end x ferrule-end connections. Impact: Enables secure, repeatable terminations with standard ferrule tooling, reducing field termination time and variation. Application: Compatible with common Bussmann-series holders and fixed-screw or crimp ferrule terminations in control panels. Feature: 600 V rating and 25 A nominal rating. Impact: Provides compatible protection for medium-voltage equipment and logic panels while maintaining prudent fuse sizing. Application: Appropriate for industrial controls, street lighting, general lighting, and distribution networks across facilities. Feature: RoHS Compliant, CE Marked, UL Listed, CSA Certified. Impact: Supports global compliance programs, simplifies cross-border deployment, and reduces regulatory risk. Application: Essential for multinational manufacturing sites, utilities, and equipment with global supply chains. Feature: Compact form factor with 1.5 in length and 0.41 in cross-section; weight 0.18 lb. Impact: Eases panel routing, space planning, and inventory management in high-mix assembly lines. Application: Ideal for space-constrained control cabinets and modular distribution panels. Feature: Rejection-style, fast-acting performance aligns with time-current characteristics to match power quality needs. Impact: Improves selectivity and reduces nuisance tripping when coordinated with upstream protection. Application: Best-practice for modern industrial automation installations requiring reliable protection with minimal interference.

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FAQs

KTK-R-25 uses ferrule-end terminations and is designed for holders that accept ferrule-end Class CC fuses. It is compatible with Bussmann-series holders and other ferrule-end configurations commonly used in industrial control panels. When selecting a fixture, verify ferrule sizing, mounting clearance, and the 1.5 inch length to ensure secure, reliable terminations.
KTK-R-25 is a current-limiting, fast-acting fuse with an interrupt rating of 200 kAIC at 600 V. Exact time-current characteristics are provided in Eaton’s data sheets and time-current curves, enabling precise coordination with upstream protection devices and minimizing fault energy.
Yes. The KTK-R-25 carries UL Listed and CSA Certified marks and is RoHS compliant with CE marking, making it suitable for global deployments across industrial, commercial, and utility-scale applications.
Designed for industrial controls panels and machinery, street lighting, general lighting, capacitors, and distribution networks, the KTK-R-25 provides robust protection in environments with high fault currents and space constraints, while supporting reliable operation and easier maintenance.
The dual-element, fast-acting design reduces arc energy and protects downstream equipment, lowering maintenance costs and downtime. Its ferrule-end construction speeds up field termination, and the standard 10-pack packaging simplifies stocking and logistics, contributing to lower total cost of ownership over time.