Eaton LESRK4 Fuse - Class RK1, 200 kAIC, 600 V
Part Number: LESRK4
Quick Summary
Eaton LESRK4 fuse protects motors in control panels with high inrush current handling. Engineers often contend with nuisance startup trips, costly downtime, and the challenge of selecting the right fuse. Certifications such as CSA Certified and UL Listed, along with Class RK1 protection, reinforce reliability and safety in industrial installations. From a business perspective, this fuse delivers dependable motor protection at 600 V, 4 A ratings, and a compact, easy-to-install package that supports efficient panel design and serviceability. It is suited for control cabinets, motor starters, and other machinery where fast interruption is critical. This translates to reduced risk, lower maintenance costs, and longer equipment life.
Product Information
Extended Description
LESRK4 Eaton: Eaton Edison LESRK fuse, Non-indicating, High in-rush current motor protection, 4 A, Class RK1, Non-indicating, 200 kAIC, Standard, 600 V
Product Name
Eaton Edison LESRK fuse
Catalog Number
LESRK4
UPC
782634548218
Product Length/Depth
5 in
Product Height
0.81 in
Product Width
0.81 in
Product Weight
1.6 lb
Warranty
No warranty
Compliances
Not Applicable
Certifications
CSA Certified UL Listed
Amperage Rating
4 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: High inrush tolerance and non-indicating design for motor protection. Business Impact: Reduces nuisance trips during startup while keeping panel complexity low. Application: Ideal for motor feeders in 600 V systems where fast, non-indicative protection is desired.Feature: 4 A amperage rating with a 200 kAIC interrupt rating. Business Impact: Precise protection that minimizes damage to windings and improves Mean Time Between Failures (MTBF). Application: Small to mid-size motors in industrial equipment with high fault-current potential. Feature: Class RK1 designation and non-indicating form factor. Business Impact: Industry-standard compatibility with existing Eaton Edison fuse panels, enabling faster stocking and streamlined maintenance. Application: Control panels and motor control centers requiring RK1 protection without indicator LEDs. Feature: 600 V voltage rating and standard packaging. Business Impact: Clear electrical specification alignment simplifies spec review and reduces design risk. Application: New installations and retrofits in industrial plants where 600 V distribution is common. Feature: Certifications and compliance (CSA Certified, UL Listed). Business Impact: Regulatory confidence, safer procurement, and smoother audits. Application: Any compliance-driven project requiring established verification marks. Feature: Compact physical dimensions (5 in length, 0.81 in width, 0.81 in height) and 1.6 lb weight. Business Impact: Easier fit in crowded panels, reduced installation time, and simplified logistics. Application: OEM and panel-builder environments where space is at a premium.
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FAQs
To install LESRK4, power down the equipment, verify the circuit is de-energized, and insert the fuse into a compatible RK1 fuse holder within the control panel. The fuse is non-indicating, so rely on the panel wiring and protective device ratings to confirm status. Ensure the circuit is rated for 4 A and 600 V, and consult Eaton’s specification sheet for mounting clearance and safe handling guidelines.
The LESRK4 is rated at 4 A with an interrupt rating of 200 kAIC and a voltage rating of 600 V. It is a non-indicating fuse of Class RK1, designed for motor protection in industrial circuits. The fuse weighs about 1.6 lb and has standard packaging suitable for replacement in Edison-style fuse blocks.
Yes. The LESRK4 is specifically described as high in-rush current motor protection within its features, making it well-suited for motor startup surges. This helps minimize nuisance tripping while preserving motor windings and extending equipment life in demanding applications.
LESRK4 carries CSA Certification and UL Listing, providing recognized third-party verification of safety and performance. These certifications support compliance in regulated environments and can simplify procurement and quality audits for industrial projects.
The documented specification states No warranty for the LESRK4. For technical support, refer to Eaton’s specification sheet and product catalogs, such as the Edison full line catalog and fuse datasheets, which provide installation guidance, compatibility notes, and replacement recommendations.