Eaton LESRK300 Fuse - Class RK1, 200 kAIC, UL Listed
Part Number: LESRK300
Quick Summary
Eaton LESRK300 fuse is designed for high in‑rush motor protection in industrial drives. Nuisance trips during startup can cause costly downtime and unplanned maintenance. UL Listed, CSA Certified, and RoHS Compliant provide regulatory confidence, while Class RK1 construction ensures safe, predictable coordination with motors and protection devices. The solution supports reliable electrical protection within control panels and across HVAC, pumping, and material‑handling applications. With standard Edison fuse compatibility and a focus on motor‑protection efficiency, it helps engineers meet uptime and compliance goals.
Product Information
Extended Description
LESRK300 Eaton: Eaton Edison LESRK fuse, Non-indicating, High in-rush current motor protection, Electrically isolated end caps, 300 A, Class RK1, 200 kAIC, Standard, 1, 600 V
Product Name
Eaton Edison LESRK fuse
Catalog Number
LESRK300
UPC
782634548539
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
300 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
High in-rush current motor protection is built into the LESRK300, extending motor life and reducing electrical stress on drive circuits. This capability minimizes nuisance trips during startup, improving machine availability in heavy-use applications and enabling smoother ramping for VFDs and direct-on-line starters. In practice, it supports reliable operation of industrial motors in conveyors, pumps, mixers, and HVAC fans where surge currents are common. The non-indicating design with electrically isolated end caps simplifies installation in tight panels and reduces misdiagnosis of fuse status during maintenance. The absence of indicators also lowers panel clutter and wiring mistakes, while maintaining compatibility with standard Edison fuse lines for fast replacement. With a 300 A rating and a 200 kAIC interrupt rating at 600 V, LESRK300 provides robust protection against short circuits and supports selective coordination with upstream protection devices. It is UL Listed and CSA Certified, reinforcing procurement confidence and regulatory compliance. RoHS compliance complements sustainable procurement practices and reduces environmental impact. The compact form factor and standard packaging (1 piece) enable straightforward retrofit into existing protection schemes and control panels, minimizing downtime during upgrades.
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FAQs
LESRK300 should be mounted in compliance with standard Edison fuse blocks and within a 600 V maximum rating. Use the correct 300 A rating for the protected circuit and verify compatible enclosure space to maintain end-cap isolation. Replace only with the same model LESRK300 to preserve interrupt rating and class RK1 coordination, and ensure wiring adheres to applicable electrical codes.
Yes. LESRK300 is UL Listed and CSA Certified, with RoHS compliance. It is designed as a Class RK1 fuse, supporting standard motor protection coordination and compliance in industrial electrical installations and panel assemblies, giving procurement teams confidence in safety and regulatory alignment.
LESRK300 is ideal for motor protection in industrial drives such as conveyors, pumps, HVAC fans, and compressors. Its high inrush protection, 300 A rating, 200 kAIC interrupt capacity, and 600 V rating make it suitable for control panels and motor starters where startup surges and short circuits must be reliably managed while maintaining uptime.
The 200 kAIC interrupt rating at 600 V defines the maximum fault current the fuse can safely interrupt, preventing arcing and equipment damage during a short circuit. This enables selective coordination with upstream protection devices, reduces risk in high‑inrush environments, and supports safer, more reliable motor protection in industrial plants.
While upfront costs may be higher than some non‑listed fuses, LESRK300 reduces downtime from nuisance trips, extends motor life, and simplifies procurement with UL, CSA, and RoHS compliance. The non‑indicating design lowers panel clutter, and standard Edison compatibility enables fast replacements, lowering maintenance labor and improving overall asset availability.