Eaton LESRK400I fuse – 600V, 400A, 200kAIC, UL Listed
Part Number: LESRK400I
Quick Summary
Eaton Edison LESRK400I fuse is designed for high in-rush motor protection in industrial drives. Engineers often face nuisance trips and unclear fault signals when safeguarding large motors; this device delivers precise 400 A protection with a 200 kAIC interrupt rating to minimize downtime. The fuse carries UL Listed certification and CSA Certified status, aligning with North American electrical protection standards and easing regulatory audits. From a business perspective, the non-indicating status reduces maintenance checks, while the 600 V rating supports common motor control circuits across facilities, enabling straightforward uptime improvements and predictable spare-part planning.
Product Information
Extended Description
LESRK400I Eaton: Eaton Edison LESRK fuse, Indicating, High in-rush current motor protection, Electrically isolated end caps, 400 A, Non-indicating, 200 kAIC, Standard, 1, 600 V
Product Name
Eaton Edison LESRK fuse
Catalog Number
LESRK400I
UPC
782634990635
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
Not Applicable
Certifications
CSA Certified UL Listed
Amperage Rating
400 A
Interrupt rating
200 kAIC
Voltage rating
600 V
Packaging type
Standard
Fuse indicator
Non-indicating
Quantity
1
Special features
Indicating, High in-rush current motor protection
The LESRK400I provides 400 A amperage rating with a 200 kAIC interrupt rating, delivering robust motor protection that minimizes costly fault propagation and downtime in heavy-start applications like conveyors and pumps. This translates to measurable reliability gains and simpler maintenance planning in industrial environments, especially where large inrush currents are routine. The 600 V rating ensures compatibility with standard motor control circuits found in typical plants, enabling easier panel integration and safer wiring practices, while reducing engineering time for system upgrades. With electrically isolated end caps, installation is safer for technicians and reduces the risk of accidental contact during servicing, supporting safer commissioning in new or upgraded drives. The standard packaging and single-unit quantity simplify stocking, reorder routines, and inventory control for OEMs and maintenance teams, improving overall TCO. Documentation access, including the Edison full-line catalog and datasheet, strengthens validation during audits and supports faster procurement decisions. Industry-standard certifications accompany the product, reinforcing compliance confidence for critical motor protection installations and helping meet customer requirements in regulated environments.
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FAQs
The LESRK400I is designed for straightforward drop-in replacement in Edison fuse holders and compatible 600 V motor control circuits. Verify the busbar or holder dimensions match the 11.63 in length and 2.36 in width, align end caps electrically isolated design for safe handling, and secure with standard mounting hardware. Use the provided Eaton datasheet to confirm wiring terminal torque and ensure proper clearance from energized parts to maintain safe operation.
The LESRK400I provides a 400 A amperage rating, a 200 kAIC interrupt rating, and a 600 V voltage rating. These specifications enable effective interruption of inrush currents common in large motors, while protecting drive circuitry and wiring from overcurrent events. For applications with frequent high inrush, this fuse minimizes nuisance trips by aligning with motor protection profiles and providing fast clear-in fault protection.
Yes, the LESRK400I is well-suited for high-inrush motor protection in HVAC fans, pumps, and conveyors where large startup currents occur. Its 400 A rating and 200 kAIC interrupt capacity ensure reliable interruption of faults without compromising normal operation, while the 600 V rating matches typical plant electrical systems. This makes it a practical choice for industrial drives requiring robust protection and predictable maintenance cycles.
LESRK400I carries UL Listed and CSA Certified markings, addressing common North American regulatory requirements for electrical protection devices. These certifications assist with code compliance, installation approvals, and OEM specifications, reducing the need for additional third-party testing in projects that rely on recognized safety and performance standards.
Maintenance considerations focus on periodic inspection, quick replacement with 1-piece units, and keeping spare LESRK400I fuses in inventory due to standard packaging. The robust interrupt rating minimizes downtime during fault events, contributing to lower repair costs and improved uptime. Long-term, predictable performance and readily available documentation reduce planning time and support a favorable total cost of ownership in modern motor control applications.