Eaton 7.2WKMH7250 Medium Voltage Motor Fuse - 63 kAIC
Part Number: 7.2WKMH7250
Quick Summary
The Eaton 7.2WKMH7250 medium voltage motor fuse protects large motors in industrial drives. This back-up fuse helps minimize downtime by providing reliable, selective protection for high-current motor circuits. While exact CE, SIL, or IP certifications are listed with the factory, this range is designed to meet typical motor-protection standards and integration requirements. The device supports Bussmann series compatibility and is built for robust operation in demanding environments. By pairing precise ratings with a proven clip interface, it delivers predictable protection while helping engineers simplify installation and documentation for compliance and maintenance planning.
Product Information
Extended Description
7.2WKMH7250 Eaton: Motor fuse-link, medium voltage, 250 A, AC 7.2 kV, 76 x 442 mm, back-up, BS, with striker HS
Product Name
Eaton Bussmann series medium voltage motor fuse
Catalog Number
7.2WKMH7250
UPC
051712837712
EAN
5027590054669
Product Length/Depth
442 mm
Product Height
76 mm
Product Width
76 mm
Product Weight
7680 g
Warranty
Not Applicable
Compliances
Contact factory
Amperage Rating
250 A
Interrupt rating
63 kAIC
Voltage rating
7.2 kV
Application
Motor protection
Barrels
1
Class
Class back-up
Construction size
76 x 442 mm
Fuse indicator
Non Indicating
Fuse type
WKMH
Used with
A3354730 Nickel-plated copper fuse clip
Packaging type
Standard
Type
fuse
Bussmann series complete full line catalog no. 1007
Bussmann series complete full line catalog no. 1007
Feature → Business Impact → Application: The 7.2 kV, 250 A rating defines precise fault-clearing capabilities, reducing arc flash exposure and collateral damage in motor starts and stops. Business impact: helps lower unplanned downtime and extends motor life through reliable back-up protection. Application: ideal for high-power drives in pumping, fans, and conveyors where continuous operation is critical. Feature → Business Impact → Application: 76 x 442 mm construction size fits standard back-up fuse enclosures and supports straightforward retrofit in existing frameworks. Business impact: reduces installation time and labor costs while enabling clean space planning in electrical rooms. Application: suitable for upgraded control panels and new builds that require compact, high-current protection. Feature → Business Impact → Application: A3354730 nickel-plated copper fuse clip compatibility ensures secure connections and low contact resistance. Business impact: enhances reliability and minimizes thermal stress during fault events. Application: aligns with Eaton Bussmann series recommendations for motor-protection circuits. Feature → Business Impact → Application: Non-indicating fuse indicator simplifies maintenance logistics by relying on system diagnostics rather than visual checks. Business impact: lowers field labor for status verification and supports remote monitoring strategies. Application: beneficial in automated plants with centralized condition-monitoring systems. Feature → Business Impact → Application: Class back-up construction and BS rating deliver predictable nuisance-tripping behavior under electrical transients. Business impact: improves protection coordination and reduces unwanted outages. Application: essential for large motors with critical uptime requirements in utilities, mining, and process industries.
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FAQs
The 7.2WKMH7250 is designed to be used with the A3354730 nickel-plated copper fuse clip. Ensure the clip is securely seated in the back-up housing, align with the motor protection circuit, and verify a clean electrical contact before energizing. Follow validated torque specs and ensure enclosure clearance to prevent overheating.
Key ratings are 250 A amperage, 7.2 kV voltage rating, and a 63 kAIC interrupt rating. These values support motor protection in medium-voltage drives, enabling selective fault clearing and limiting damage to the drive and power network during short circuits.
Yes, the Eaton Bussmann medium-voltage motor fuse is designed for robust industrial use, with a back-up class construction that tolerates repetitive fault events. For extreme environments, verify enclosure mounting, vibration isolation, and alignment with the plant’s maintenance schedule to ensure long-term reliability.
The product lists 'Compliances: Contact factory', so obtain formal certification details directly from Eaton. This ensures you have the exact CE, UL, or other regulatory markings applicable to your region and installation requirements for safe, compliant operation.
The back-up fuse provides predictable fault isolation, reducing the risk of cascading outages. Its compatibility with standard Bussmann series clips simplifies replacement and maintenance, while the non-indicating design lowers field checks; integrate with plant condition monitoring to optimize preventive maintenance and uptime.