Eaton LENRK40 Fuse Edison RK1 - UL Listed, 40 A, 250 V
Part Number: LENRK40
Quick Summary
The Eaton LENRK40 fuse protects motors with high inrush demands in standard industrial drives. Engineers frequently battle nuisance trips and opaque fuse status during startup, risking downtime and repairs. With CSA Certified and UL Listed design, plus Class RK1 classification, LENRK40 meets North American standards for motor protection in control panels. The device combines compact dimensions with robust protection, supporting easier stocking and faster replacements. Its non-indicating feature reduces visual confusion in crowded electrical panels while delivering reliable, industry-accepted performance at 40 A and 250 V. For owners seeking predictable protection, lower maintenance costs, and improved panel reliability, LENRK40 provides a practical, standards-aligned solution.
Product Information
Extended Description
LENRK40 Eaton: Eaton Edison LENRK fuse, Non-indicating, High in-rush current motor protection, 40 A, Class RK1, 200 kAIC, Standard, 10, 250 V
Product Name
Eaton Edison LENRK fuse
Catalog Number
LENRK40
UPC
782634538387
Product Length/Depth
3 in
Product Height
0.81 in
Product Width
0.81 in
Product Weight
0.001 lb
Warranty
No warranty
Compliances
Not Applicable
Certifications
CSA Certified UL Listed
Amperage Rating
40 A
Interrupt rating
200 kAIC
Voltage rating
250 V
Packaging type
Standard
Class
Class RK1
Fuse indicator
Non-indicating
Quantity
10
Special features
70/30 brass end cap
Feature → Business Impact → Application: LENRK40 delivers 40 A protection with a 200 kAIC interrupt rating, enabling motors to start reliably without nuisance interruptions while safeguarding downstream circuits. This translates to reduced downtime and lower repair costs in continuous-motion environments like conveyors and pumps. Application: suitable for standard Edison fuse holders in medium-duty motor circuits where high inrush is expected and quick protection is essential. Feature → Business Impact → Application: UL Listed and CSA Certified certifications provide regulatory assurance, accelerating panel approvals and reducing compliance risk in North American installations. Application: ideal for compliant control panels in manufacturing lines and packaging machinery. Feature → Business Impact → Application: Non-indicating fuse design minimizes panel clutter, while the 3 in length and 0.81 in width/height allow easy integration into compact switchgear. Application: fits standard RK1 protections in space-constrained enclosures. Feature → Business Impact → Application: 70/30 brass end caps improve contact reliability and heat dissipation, supporting longer service life in demanding motor drives. Application: preferred choice for high-temperature or continuous operation environments. Feature → Business Impact → Application: 10-pack quantity supports efficient stocking, faster spares deployment, and reduced procurement cycles. Application: maintenance teams and distributors benefit from streamlined replacement planning.
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FAQs
LENRK40 is designed for standard Edison fuse holders and RK1 protected motor circuits. It measures 3 in in length with a 0.81 in width and height, and uses 70/30 brass end caps for reliable contact. Verify your panel is built for RK1-class fuses and that the holder supports a 40 A, 250 V device with a 200 kAIC interrupt rating. If in doubt, consult Eaton cartridge fuse compatibility guides or your panel manufacturer specifications.
LENRK40 provides a 40 A rating and a 200 kAIC interrupt rating, specifically designed for high inrush motor protection. Its non-indicating design reduces panel clutter, while the RK1 class ensures consistent, predictable protection for standard industrial motors, conveyors, and pumps during startup transients. This combination minimizes nuisance trips and maintains motor uptime.
Yes. LENRK40 is rated at 250 V, which comfortably covers 208–240 V systems used in many North American plants. It carries UL Listed and CSA Certified approvals, supporting compliance in regulated environments and streamlining panel integration for motor protection projects in manufacturing and process industries.
Key certifications are UL Listed and CSA Certified, both included with LENRK40. These approvals help meet safety codes and industry standards in North American facilities, reduce QA and commissioning risk, and facilitate faster approvals from customers and inspectors during system integration.
LENRK40 ships in a 10-pack, supporting efficient stocking and quick replacements to minimize downtime. Its robust 40 A, 250 V, and 200 kAIC specs defend motors against costly faults, reducing repair costs. While warranty is not included, the reliable protection and convenient packaging offer a favorable total cost of ownership for industrial motor protection programs.