Eaton LESRK50 Fuse - Class RK1, 200 kAIC
Part Number: LESRK50
Quick Summary
The Eaton LESRK50 fuse provides dependable motor protection for industrial drive systems. This non-indicating device shields motors and feeders from faults while accommodating high inrush currents common when starting heavy loads. Engineers often face nuisance trips or insufficient interrupt capability in demanding environments, making the right fuse choice critical. The LESRK50 carries UL Listed and CSA Certified marks, reinforcing reliability and regulatory compliance, while its Class RK1 designation aligns with standard motor circuit protection practices. Built for 600 V systems, 50 A ratings, and a robust 200 kAIC interrupt rating, it supports predictable downtime and safer commissioning. This combination supports procurement, installation, and ongoing maintenance in high-demand manufacturing settings.
Product Information
Extended Description
LESRK50 Eaton: Eaton Edison LESRK fuse, Non-indicating, High in-rush current motor protection, 50 A, Class RK1, 200 kAIC, Standard, 600 V
Product Name
Eaton Edison LESRK fuse
Catalog Number
LESRK50
UPC
782634548409
Product Length/Depth
5.5 in
Product Height
1.06 in
Product Width
1.06 in
Product Weight
2.6 lb
Warranty
No warranty
Compliances
Not Applicable
Certifications
UL Listed CSA Certified
Amperage Rating
50 A
Interrupt rating
200 kAIC
Voltage rating
600 V
Packaging type
Standard
Class
Class RK1
Fuse indicator
Non-indicating
Special features
Non-indicating, High in-rush current motor protection
Feature: Non-indicating design reduces maintenance complexity and lifecycle costs while delivering reliable motor protection. Business Impact: Lower visual inspection requirements; easier stocking and replacement in standard fuse blocks. Application: Ideal for simple, cost-effective protection in motor feeders and control panels. Feature: 50 A rating with 200 kAIC interrupt rating enables robust protection against short circuits in high-inrush motor starts. Business Impact: Limits equipment damage and minimizes unplanned downtime, improving line throughput. Application: Suitable for large motors and conveyor systems with aggressive starting currents. Feature: 600 V electrical rating supports common industrial power distributions. Business Impact: Broad compatibility across control circuits and MCCs, reducing the need for multiple fuse types. Application: Machine tools, packaging lines, and process equipment. Feature: Class RK1 and standard dimensions (5.5 in length, 1.06 in width) ensure easy installation and swap-in compatibility. Business Impact: Faster changeouts and reduced panel rework, lowering maintenance labor time. Application: OEMs and maintenance teams deploying Edison fuse blocks. Feature: UL Listed and CSA Certified presence confirms compliance and traceability. Business Impact: Streamlines procurement and regulatory acceptance, easing supplier audits. Application: Industrial facilities with stringent safety and quality requirements. Feature: Non-indicating, high in-rush protection supports reliable operation in motor-heavy environments. Business Impact: Fewer false trips during startup; enhanced equipment protection and productivity. Application: Heavy-duty drives, grinders, fans, and material handling equipment.
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FAQs
Yes. The LESRK50 is a standard Class RK1 fuse with typical Edison-style form factor. It measures 5.5 in in length and 1.06 in in width, designed for 600 V circuits, 50 A protection, and a 200 kAIC interrupt rating. This makes it readily compatible with common MCCs, motor starters, and control panels that require RK1 protection and UL Listed/CSA Certified reliability.
The LESRK50 provides a 50 A current rating, a 200 kAIC interrupt rating, and a 600 V voltage rating. It is non-indicating and conforms to Class RK1. These specs enable safe interruption of faults in motor circuits while accommodating high inrush during motor startup, supporting reliable protection for industrial drives.
LESRK50 is well suited for industrial motor protection in drives, conveyors, and machine tools where high inrush currents occur. It supports high-energy motor circuits, reduces downtime due to nuisance trips, and provides reliable protection in 600 V systems. Typical uses include heavy machinery, packaging lines, and material handling equipment.
LESRK50 carries UL Listed and CSA Certified credentials, providing regulatory assurance and traceability for safety and performance. These certifications simplify audits, ensure compatibility with compliant control equipment, and support procurement decisions in regulated manufacturing environments.
With a non-indicating design and standard packaging, LESRK50 minimizes maintenance complexity and spare-part inventory. Its high interrupt rating protects vital motor assets, reducing repair costs and downtime after faults. While the component carries a no-warranty note, its reliability and regulatory compliance contribute to predictable maintenance planning and total cost of ownership advantages.