Eaton KTN-R-12 Fuse - Class RK1 fast-acting
Part Number: KTN-R-12
Quick Summary
The Eaton Bussmann KTN-R-12 fuse provides fast-acting, current-limiting protection for industrial control circuits. In typical panel assemblies, surges or short circuits can trigger nuisance outages or damage sensitive electronics; this Class RK1 device is designed to clear faults quickly while preserving downstream components. The fuse offers a robust interrupting rating of 200 kA at 250 VAC, suitable for high fault-current environments, and operates reliably within standard 12 A, 250 V circuits. While Eaton's RoHS verification tool confirms compliance with RoHS, many markets also require CE marking and UL/CSA style approvals for panel installation. Designed to integrate with LPJ-SP replacement kits, this fuse delivers predictable protection with reduced maintenance costs and faster field service.
Product Information
Extended Description
KTN-R-12 Eaton: Eaton Bussmann Series Class RK1 fuse, KTN-R, fast-acting, current limiting fuse, 12 A, rejection style fuse, interrupting rating of 200 kA at 250 Vac
Product Name
Eaton Bussmann series KTN-R fuse
Catalog Number
KTN-R-12
UPC
051712407335
EAN
5027590172790
Product Length/Depth
2 in
Product Height
0.56 in
Product Width
0.56 in
Product Weight
0.015 lb
Warranty
Not Applicable
Compliances
Not Applicable
Amperage Rating
12 A
Voltage rating
250 V
Number of elements
1
Packaging type
Standard
Class
Class RK1
Fuse indicator
Non-indicating
Special features
Kit contains (3) LPJ-3SP, (3) LPJ-5SP, (3) LPJ-6SP, (3) LPJ-10SP, (3) LPJ-15SP, (3) LPJ-20SP, (3) LPJ-25SP, (3) LPJ-30SP, (3) LPJ-40SP, (3) LPJ-50SP
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: 12 A amperage rating at 250 V enables precise protection for common automation loads. Business impact: prevents nuisance outages and equipment damage while minimizing unnecessary downtime. Application: suitable for control panels and motor circuits in manufacturing lines. Feature: 200 kA interrupting rating at 250 VAC provides robust fault-current handling. Business impact: enhances system resilience in high-current fault conditions, reducing arc-flash risk and component damage. Application: acceptable in energy-dense panels and power distribution blocks. Feature: Class RK1 fast-acting fuse with current-limiting behavior. Business impact: faster fault clearance translates to shorter outages and lower heat buildup in enclosures. Application: widely used in Bussmann series protection schemes for reliable automation performance. Feature: compact 2 in length with 0.56 in width and height. Business impact: easy stocking and installation in tight panel spaces; improves compatibility with LPJ SP mounting arrangements. Application: ideal for retrofit projects and new builds in control cabinets. Feature: Kit contains (3) LPJ-3SP, (3) LPJ-5SP, (3) LPJ-6SP, (3) LPJ-10SP, (3) LPJ-15SP, (3) LPJ-20SP, (3) LPJ-25SP, (3) LPJ-30SP, (3) LPJ-40SP, (3) LPJ-50SP. Business impact: streamlines procurement and replacement planning, reducing downtime and stock complexity. Application: supports standardized spares for quick field service in automation facilities. Feature: Non-indicating fuse with single element design. Business impact: simple replacement workflows and predictable behavior under fault; minimizes confusion in mixed-fuse panels. Application: common in legacy and modern Bussmann flows where indication isn't required.
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FAQs
KTN-R-12 is a 2 in long, 0.56 in wide, 1-element, current-limiting fuse designed for rejection-style mounting in LPJ SP block assemblies. Ensure correct orientation, seating, and enclosure clearance; use the standard 2 in fuse cavity and verify contact integrity before power-up.
The device is a 12 A, 250 V fast-acting Class RK1 fuse with a 200 kA interrupting rating at 250 VAC. It is a single-element, non-indicating fuse designed for rapid fault clearance in automation panels.
Yes. With a 12 A rating and 200 kA interrupting capacity at 250 VAC, it protects control circuits and power distribution in manufacturing and process automation equipment, while its compact size aids panel density and ease of installation.
RoHS compliance is supported via Eaton’s RoHS tools. CE or UL/CSA listings are region-specific; verify local regulatory requirements and panel approvals with the datasheet and regional Eaton documentation. IP ratings apply to enclosures rather than the fuse itself.
The product package notes a kit containing LPJ-SP variants: LPJ-3SP, LPJ-5SP, LPJ-6SP, LPJ-10SP, LPJ-15SP, LPJ-20SP, LPJ-25SP, LPJ-30SP, LPJ-40SP, and LPJ-50SP, enabling flexible substitution and streamlined stocking for common Bussmann protection schemes.