Eaton LESRK400 Fuse - Class RK1, 400A, 600V - 200 kAIC
Part Number: LESRK400
Quick Summary
Eaton LESRK400 fuse delivers high-current motor protection for demanding industrial drives and motor circuits. Engineers often face nuisance tripping and slow protection responses when starting large loads, which leads to unplanned downtime and higher maintenance costs. UL Listed and CSA Certified provide essential regulatory confidence, RoHS compliance supports responsible material use, and Class RK1 designation indicates standard, reliable protection behavior. The Eaton Edison LESRK series combines non-indicating end caps with robust inrush protection, making installation straightforward in standard motor control centers. Using this fuse family translates to lower downtime, improved uptime predictability, and easier procurement, while aligning with common OEM and panel-building specifications for industrial protection and efficiency.
Product Information
Extended Description
LESRK400 Eaton: Eaton Edison LESRK fuse, Non-indicating, High in-rush current motor protection, Electrically isolated end caps, 400 A, Class RK1, 200 kAIC, Standard, 1, 600 V
Product Name
Eaton Edison LESRK fuse
Catalog Number
LESRK400
UPC
782634548553
Product Length/Depth
11.63 in
Product Height
2.36 in
Product Width
2.36 in
Product Weight
2.36 lb
Warranty
No warranty
Compliances
RoHS Compliant
Certifications
UL Listed CSA Certified
Amperage Rating
400 A
Interrupt rating
200 kAIC
Voltage rating
600 V
Packaging type
Standard
Class
Class RK1
Fuse indicator
Non-indicating
Quantity
1
Special features
Non-indicating, High in-rush current motor protection
Feature → Business Impact → Application: Non-indicating end caps with electrically isolated ends simplify maintenance and reduce misreads during panel swaps, cutting replacement time and lowering field error rates. This translates to faster service calls and less downtime in rugged manufacturing environments where uptime matters. Application: ideal for crowded MCCs and compact enclosures where quick, error-free fuse replacement improves overall line availability. Feature → Business Impact → Application: High inrush current protection with 200 kAIC interrupt rating prevents nuisance trips and motor damage during start-up, reducing unplanned downtime and extending motor life. Application: suitable for fans, conveyors, and pumps in high-load industrial processes. Feature → Business Impact → Application: Class RK1 standard protection provides predictable fuse behavior and easy coordination with upstream protection schemes, enhancing panel design consistency. Application: aligns with OEM motor protection strategies and simplifies engineering validation. Feature → Business Impact → Application: 400 A at 600 V rating delivers robust protection for large motors while maintaining compact footprint, enabling standardized procurement. Application: fits typical industrial drive systems requiring reliable short-circuit interruption. Feature → Business Impact → Application: UL Listed, CSA Certified, RoHS compliant credentials ensure regulatory alignment and environmental responsibility, supporting audits and supplier requirements. Application: supports compliance-driven purchasing and OEM specification adherence.
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FAQs
The LESRK400 is designed for standard motor control centers and panelboards with typical 11.63 in length and 2.36 in cross-section. It uses non-indicating end caps for straightforward replacement in crowded enclosures, reducing service time and risk of misreads. Verify upstream protection coordination and available space within the enclosure prior to installation.
A 200 kAIC interrupt rating means the fuse can safely interrupt high fault currents typical of large motors during startup or fault conditions. This level of protection minimizes motor and wiring damage, improves system reliability, and supports compliant coordination with upstream breakers and protection devices in industrial drives.
Yes. The LESRK400 is rated for 600 V and is designed to tolerate high inrush currents characteristic of large motor starts. Its RK1 classification and robust interrupt rating provide reliable motor protection while maintaining compatibility with common 600 V motor control architectures and OEM specifications.
The LESRK400 is UL Listed and CSA Certified, confirming compliance with major North American electrical safety standards. It is RoHS compliant, ensuring adherence to material restrictions and environmental guidelines—helpful for audits, supplier qualifications, and green manufacturing initiatives.
Expect reduced downtime due to dependable protection and easier maintenance from non-indicating design, which simplifies replacement in dense panel layouts. The fuse’s robust inrush tolerance and standard RK1 characteristics improve protection coordination, potentially lowering maintenance costs and extending motor life, delivering a favorable total cost of ownership in industrial drive applications.