Eaton KTN-R-225 Fuse - Class RK1 200 kAIC at 250 Vac
Part Number: KTN-R-225
Quick Summary
Eaton KTN-R-225 fuse is fast-acting overcurrent protection for power panels and motor drives. It helps prevent damage from overloads by interrupting faults quickly, reducing arc energy and downtime. Note that the data does not specify SIL, CE, or IP certifications; the device is a Class RK1 current-limiting fuse designed for high-current applications. With a 225 A rating and an interrupt rating up to 200 kAIC at 250 Vac (and 100 kAIC at 250 Vdc), it delivers robust protection for automation cabinets, drives, and MCCs. This makes procurement straightforward for electrical protection deployments, with reliable performance and compatibility in standard blade-end fuse holders, supporting safety and uptime in industrial environments.
Product Information
Extended Description
KTN-R-225 Eaton: Eaton Bussmann Series Class RK1 fuse, KTN-R, fast-acting, current limiting fuse, 225 A, rejection style fuse, interrupting rating of 200 kA at 250 Vac and 100 kA at 250 Vdc
Product Name
Eaton Bussmann series KTN-R fuse
Catalog Number
KTN-R-225
UPC
051712407212
Product Length/Depth
8.5 in
Product Height
2.06 in
Product Width
2.06 in
Product Weight
1.94 lb
Warranty
Not Applicable
Compliances
Not Applicable
Amperage Rating
225 A
Interrupt rating
100 kAIC at 250 Vdc 200 kAIC at 250 Vac
Voltage rating
250 Vac, 250 Vdc
Material
Melamine glass tube
Number of elements
1
Packaging type
Standard
Class
Class RK1
Connection
Blade end x blade end
Fuse indicator
Non-indicating
Special features
70/30 brass end cap
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
KTN-R-225 is a fast-acting, current-limiting Class RK1 fuse that minimizes fault energy and protects sensitive electrical equipment in power distribution and automation panels. The 225 A amperage rating paired with a 200 kAIC interrupt rating at 250 Vac ensures rapid fault clearance for motor drives and MCCs, reducing downtime and potential collateral damage. The rejection-style design, reinforced by 70/30 brass end caps, helps ensure proper orientation and secure connections in blade-end configurations, improving installation reliability in busy control rooms. Its melamine glass tube construction adds durability in industrial environments where vibration and temperature swings are common, while maintaining compact form with a length of 8.5 inches and a width/height of 2.06 inches. The single-element fuse supports straightforward replacement in standard RK1 holders, streamlining maintenance.
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FAQs
KTN-R-225 uses blade end x blade end connections and is designed for standard Bussmann RK1 fuse holders. This compatibility simplifies retrofit and maintenance in existing control panels, MCCs, and automation cabinets, reducing downtime during fuse replacements and ensuring a reliable, secure physical fit in typical industrial enclosures.
The KTN-R-225 is rated for 225 A continuous operation, with an interrupt rating of 200 kAIC at 250 Vac and 100 kAIC at 250 Vdc. The voltage rating is 250 Vac / 250 Vdc, and the fuse is designed for current-limiting protection to minimize fault energy and limit damage during faults in high-current circuits.
This fuse is well suited for power distribution panels, motor control centers, and machine automation projects where high-current protection and rapid fault interruption are critical. Its Class RK1 designation and high interrupt capability make it a solid choice for protecting drives, controllers, and other equipment in demanding industrial environments.
The provided data does not specify SIL, CE, or IP certifications. It identifies the device as a Class RK1 current-limiting fuse with axial specifications, a typical setup for industrial protection. For certification details, refer to your procurement requirements or request the official datasheet from Eaton Bussmann.
By delivering fast fault clearance and high interrupt capacity, the KTN-R-225 reduces downtime and potential collateral damage from faults, extending equipment life and improving system uptime. Its robust construction, reliable blade-end connections, and compatibility with standard RK1 holders streamline replacements and maintenance cycles, contributing to lower total cost of ownership in automation deployments.