Eaton KTK-R-3-1/2 Fuse - Class CC, 3.5 A, 200 kAIC
Part Number: KTK-R-3-1/2
Quick Summary
KTK-R fuse from Eaton Bussmann provides fast-acting current-limiting to protect industrial control panels. This addresses downtime caused by nuisance trips and insufficient interrupting capability in high fault scenarios. It carries UL Listed and CSA Certified approvals and is RoHS compliant with CE marking to meet modern safety standards. With a 600 V rating, dual-element construction, and rejection-style design, it delivers reliable protection while simplifying installation and maintenance for panel builders and OEMs.
Product Information
Extended Description
KTK-R-3-1/2 Eaton: Eaton Bussmann Series Class CC fuse, KTK-R, fast-acting, dual-element current limiting fuse, 3.5 A, rejection style fuse, interrupting rating of 200kA at 600Vac
Product Name
Eaton Bussmann series KTK-R fuse
Catalog Number
KTK-R-3-1/2
UPC
051712420617
EAN
5027590445641
Product Length/Depth
1.5 in
Product Height
0.41 in
Product Width
0.41 in
Product Weight
0.02 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
3.5 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
Bussmann Full Line Catalog
Bussmann Full Line Catalog
Bussmann Full Line Catalog
Bussmann series Fuseology
Eaton Specification Sheet - KTK-R-3-1/2
KTK-R Spec Sheet
KTK-R Spec Sheet
Current-limiting fast-acting fuse design delivers rapid fault interruption, reducing damage to relays, wiring, and capacitors and cutting downtime and repair costs. This translates to measurable reliability gains in manufacturing lines and control cabinets where fault currents can spike during faults and inrush events. Ideal for industrial controls panels and machinery, including distribution blocks, lighting controls, and capacitor banks.
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FAQs
The KTK-R-3-1/2 is designed for industrial controls panels and machinery, including protection for relays, contactors, capacitors, and distribution gear. With a 600 V rating and 3.5 A amperage, it provides fast-acting current-limiting protection that minimizes damage during faults. Its dual-element construction enhances reliability for demanding applications.
The fuse combines current-limiting action with a dual-element design to quickly interrupt fault currents, reducing damage to motors, drives, and capacitors. Its 200 kAIC interrupt rating supports high fault currents, while the fast-acting response limits energy exposure. This results in fewer long-term failures and lower replacement costs in motor control centers and capacitor banks.
Yes. The KTK-R-3-1/2 is UL Listed and CSA Certified, and it carries RoHS compliance with CE marking. These certifications support regulatory compliance for global OEMs and help ensure safety, reliability, and environmental stewardship across industrial installations.
Install the ferrule-end to ferrule-end configuration, ensuring correct seating in the panel holder to avoid misalignment. The rejection-style feature helps prevent substitution with incorrect fuses, while the ferrule connections enable quick, secure mounting. Follow standard control-panel wiring practices and refer to the time-current curves for precise protection settings.
Best-suited for industrial controls panels, street and general lighting systems, capacitors, and distribution networks. The 3.5 A rating at 600 V with a 200 kAIC interrupt capability makes it ideal for panels carrying moderate but fault-prone currents, where fast clearing and reliability reduce downtime and extend equipment life in automation and power distribution environments.