Eaton KTN-R-4 Fuse - Class RK1, 4 A, 250 V, 200 kA
Part Number: KTN-R-4
Quick Summary
KTN-R fuse from the Eaton Bussmann Series provides fast-acting overcurrent protection for industrial control panels. Engineers often struggle with nuisance trips and misapplied protection in compact enclosures, leading to unplanned downtime. Typical certifications for RK1 fuses include CE marking for European equipment and UL/CSA listings for North American safety; RoHS compliance details are available via Eaton's RoHS tool. With a 4 A rating at 250 V and a 200 kA interrupting capability, the KTN-R-4 delivers reliable protection while simplifying replacement in standard RK1 rejection-style footprints.
Product Information
Extended Description
KTN-R-4 Eaton: Eaton Bussmann Series Class RK1 fuse, KTN-R, fast-acting, current limiting fuse, 4 A, rejection style fuse, interrupting rating of 200 kA at 250 Vac
Product Name
Eaton Bussmann series KTN-R fuse
Catalog Number
KTN-R-4
UPC
051712407328
Product Length/Depth
2 in
Product Height
0.56 in
Product Width
0.56 in
Product Weight
0.1 lb
Warranty
Not Applicable
Compliances
Not Applicable
Amperage Rating
4 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: minimizes arc energy and protects sensitive loads; Application: control panels and machine wiring in harsh environments. The fast response reduces fault propagation, enabling quicker service restoration and lower downtime costs. Feature: Rejection-style Class RK1 form factor; Business impact: safe, intuitive installation and reliable retention in RK1 holders; Application: retrofit in existing Bussmann RK1 footprints. Feature: 4 A at 250 V with 200 kA interrupting rating; Business impact: supports high fault currents without nuisance trips, preserving motor and drive integrity; Application: distribution and control circuits in industrial equipment. Feature: Compact size (2 in length) and light weight (0.1 lb); Business impact: enables dense panel layouts and easier handling during installation; Application: space-constrained control cabinets and machinery enclosures. Feature: Availability of datasheets and catalogs; Business impact: streamlines procurement and compliance checks; Application: engineering documentation, MRO and spares planning.
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FAQs
The KTN-R-4 uses a 2 in long, 0.56 in wide, 0.56 in tall footprint in a rejection-style RK1 configuration, suitable for standard RK1 fuse holders in control panels.
Amperage rating: 4 A; Voltage rating: 250 V; Interrupting rating: 200 kA at 250 VAC.
Yes. It is a fast-acting, current-limiting RK1 fuse designed for protection of industrial control panels and machine wiring in rugged environments.
CE marking and RoHS compliance information are available for the Bussmann RK1 family; use Eaton's RoHS tool and datasheets to confirm applicability to your region and product lot.
Datasheet for Bussmann KTN-R in the RK1 family is available on Eaton’s site; reference bus-ele-ds-1043-ktn-r.pdf for the KTN-R data.