Eaton LESRK17.5 Fuse - Class RK1, UL Listed CSA Certified

Part Number: LESRK17.5
Eaton logo
Manufacturer
Eaton
Part number
LESRK17.5

Quick Summary

Eaton LESRK17.5 fuse protects motors from high inrush in industrial drives and motor circuits. Sizing for varying motor starting profiles and avoiding nuisance tripping is a common engineering challenge. This device is UL Listed and CSA Certified, with Class RK1 rating for selective motor protection. Designed for 600 V systems, it delivers reliable Edison fuse protection, reducing downtime and maintenance costs for your facility. Non-indicating design minimizes panel indicators and is suited for integrated motor control centers. Its standard 5 in length and compact 0.81 in profile simplify retrofit in Edison fuse blocks and RK1-compatible holders.

Product Information

Extended Description

LESRK17.5 Eaton: Eaton Edison LESRK fuse, Non-indicating, High in-rush current motor protection, 17.5 A, Class RK1, Non-indicating, 200 kAIC, Standard, 600 V
Product Name
Eaton Edison LESRK fuse
Catalog Number
LESRK17.5
UPC
782634548331
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
UL Listed CSA Certified
Amperage Rating
17.5 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
The fuse’s 17.5 A amperage rating matches typical motor protection needs in medium-duty drives, preventing nuisance trips while allowing normal start-up current. This precise rating translates into fewer unplanned outages and lower maintenance costs for production lines. It applies to motor feeders, conveyors, and processing equipment powered from 600 V systems, helping engineering teams size protection without overfitting fuses to your loads. With a 200 kAIC interrupt rating, the LESRK17.5 safely interrupts high fault currents without damage or arcing. This improves safety, reduces the risk of secondary equipment damage, and simplifies coordination with upstream protective devices in MCCs and motor feeders that experience current spikes. Class RK1 construction delivers selective protection so only the affected circuit clears on a fault, limiting outages and speeding recovery in busy control panels. This reduces replacement costs and supports reliable operation of motor starters and downstream loads in industrial lines.Non-indicating operation hides fuse status in crowded panels, reducing visual clutter and avoiding indicator misreads during maintenance. The design maintains clear protection while enabling remote or upstream status signaling, making it ideal for Edison fuse blocks and RK1-ready holders in modern control cabinets.UL Listed and CSA Certified credentials demonstrate conformity to global safety standards, aiding audits and supplier qualification in regulated environments. These certifications underpin procurement decisions and support compliance across manufacturing floors where motor protection is critical.The standard form factor and packaging—5 in length with a 0.81 in width and height—facilitate straightforward retrofits in Edison fuse blocks and RK1-compatible holders, minimizing downtime during panel upgrades and replacements.

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FAQs

To install, ensure the LESRK17.5 catalog number is used in an RK1-rated fuse block compatible with Eaton Edison assemblies. Verify the block accepts Bussmann-style RK1 fuses, align the fuse terminals with the holder, and insert until seated. Confirm 600 V circuit suitability and restore power only after the fuse is properly seated and panel doors are closed.
The 200 kAIC interrupt rating specifies the maximum fault current the fuse can safely interrupt without damage. This protects the motor, wiring, and panels from high fault energy, enabling safer startup and fault clearance. It is a critical specification for feeders and MCCs where fault currents can spike during faults or short-circuits.
Yes. The 17.5 A rating and high interrupt capability are designed to handle motor startup surges common in VFD-driven systems, reducing nuisance tripping while protecting the circuit. The non-indicating design keeps panels clean, and UL Listed CSA Certified status ensures compliance in controlled environments.
LESRK17.5 is UL Listed and CSA Certified, with Class RK1 protection. These credentials verify adherence to recognized safety standards, simplifying audits, supplier qualification, and compliance for industrial facilities, and giving engineers confidence in reliable, code-compliant motor protection.
The fuse offers straightforward retrofit in standard RK1 blocks, reducing downtime during replacements. Its compliance certifications and robust interrupt rating support consistent protection, while the compact form factor and standard packaging simplify stocking and procurement, contributing to lower total cost of ownership over time.