Eaton KTK-40 Fuse - 600 V, 40 A, RoHS CE, Small footprint
Part Number: KTK-40
Quick Summary
KTK-40 fuse by Eaton protects control circuits and lighting in panel enclosures. Engineers often struggle with nuisance trips, limited space, and inconsistent protection when selecting a fuse for mixed loads. The device is CE marked and RoHS compliant, ensuring regulatory alignment, and is rated for up to 600 V to support meters, control circuits, and lighting protection. As part of the Bussmann series, it delivers a compact footprint and reliable protection, supporting efficiency gains and easier maintenance in industrial automation environments. This combination reduces total cost of ownership while delivering predictable, compliant performance.
Product Information
Extended Description
KTK-40 Eaton: Eaton Bussmann series KTK fuse, Control circuits, Lighting circuit protection, Meter circuits, 40 A, Non-indicating, Ferrule end x ferrule end, Nickel-plated bronze endcap, Melamine tube, Standard, 600 V
Product Name
Eaton Bussmann series KTK fuse
Catalog Number
KTK-40
UPC
051712420327
EAN
5027590445979
Product Length/Depth
0.41 in
Product Height
1.5 in
Product Width
0.41 in
Product Weight
0.19 lb
Warranty
Not Applicable
Compliances
CE Marked RoHS Compliant
Amperage Rating
40 A
Voltage rating
600 V
Material
Melamine tube Nickel-plated bronze endcap
Packaging type
Standard
Connection
Ferrule end x ferrule end
Fuse indicator
Non-indicating
Special features
Small footprint
Bussmann series complete full line catalog no. 1007
Bussmann series complete full line catalog no. 1007
Bussmann series Fuseology
Eaton Specification Sheet - KTK-40
KTK-40~LIMITRON FAST ACTING FUSE
Datasheet - FNQ-30
Feature: 40 A, 600 V rating provides precise overload protection for control circuits and lighting in industrial panels. Business Impact: minimizes nuisance trips and protects expensive drives and meters, reducing downtime and maintenance costs. Application: ideal for panelboards and control cabinets in automation lines.Feature: Non-indicating design with ferrule end x ferrule end connections. Business Impact: simplifies installation and wiring in crowded enclosures, lowering assembly time and error risk. Application: retrofit and new-build panel installations where quick replacement is essential.Feature: Melamine tube with nickel-plated bronze endcaps. Business Impact: enhances thermal stability and durability in demanding environments, boosting MTBF and long-term reliability. Application: industrial settings with elevated temperatures and vibration.Feature: Small footprint with standard packaging. Business Impact: saves panel space and enables denser layouts, improving overall control cabinet efficiency and reducing enclosure costs. Application: compact control panels, meter circuits, and lighting protection circuits.Feature: CE Marked and RoHS compliant. Business Impact: ensures regulatory compliance and easier procurement across global projects, reducing risk and validation time. Application: regulated industrial environments requiring traceable conformity and sustainability goals.
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FAQs
The KTK-40 is designed for control circuits, lighting protection, and meter circuits within industrial panel enclosures. It uses ferrule end-to-end connections and standard packaging, enabling quick drop-in replacement in existing fuse blocks. With a 0.41 in width and 1.5 in height, it fits compact control cabinets while delivering robust overcurrent protection at 40 A and 600 V.
Non-indicating fuses reduce visual indicators that can be misread in busy panels, lowering confusion during maintenance. The KTK-40 nonetheless provides consistent current interruption when faults occur, preserving system protection and simplifying fault diagnosis because you rely on electrical tests and downstream indicators rather than fuse indication alone.
Yes. The KTK-40 carries CE marking and RoHS compliance, which means it meets European regulatory requirements for safety, health, and environmental impact. This simplifies compliance workflows for projects in the EU and globally, reduces verification steps, and supports sustainable procurement across automotive, manufacturing, and machinery installations.
The fuse has dimensions of 0.41 in in length and width, with a height of 1.5 in. It uses ferrule end x ferrule end connections, and the body is a melamine tube with nickel-plated bronze endcaps. These features support robust mounting in standard fuse blocks and easy in-panel wiring.
Technical resources include the Eaton Specification Sheet for KTK-40, the KTK-40 data sheet, Bussmann catalogs, and the Fuseology multimedia. These documents provide electrical ratings, mechanical dimensions, wiring guidance, and application notes to support installation in control circuits, lighting circuits, and metering applications.