Eaton LENRK45 Fuse - Class RK1, 200 kAIC, 250 V CSA UL Listed
Part Number: LENRK45
Quick Summary
The Eaton LENRK fuse provides reliable inrush-motor protection for industrial drive systems and conveyor applications. Engineers often struggle with nuisance tripping during motor startup and poor coordination with upstream protection. CSA Certified and UL Listed ensure compliance across North America, while the RK1 class supports motor overload protection in standard industrial settings. This combination reduces downtime by filtering startup spikes, improves protection coordination, and lowers total cost of ownership across service life. Designed for 250 V systems and compatibility with Eaton Edison catalogs, LENRK45 fits standard 10-pack packaging and standard mounting practices. Procurement teams value consistent labeling, the non-indicating status, and the documented 200 kAIC interrupt rating for robust short-circuit protection.
Product Information
Extended Description
LENRK45 Eaton: Eaton Edison LENRK fuse, Non-indicating, High in-rush current motor protection, 45 A, Class RK1, 200 kAIC, Standard, 10, 250 V
Product Name
Eaton Edison LENRK fuse
Catalog Number
LENRK45
UPC
782634538394
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
45 A
Interrupt rating
200 kAIC
Voltage rating
250 V
Packaging type
Standard
Class
Class RK1
Fuse indicator
Non-indicating
Quantity
10
Special features
Non-indicating, High in-rush current motor protection
Non-indicating LENRK45 fuse design reduces panel clutter and simplifies visual inspection in crowded control enclosures. This feature helps technicians quickly confirm protection status during routine checks without deciphering indicator lights, reducing maintenance time and error potential. The LENRK45 is compatible with standard Edison fuse clips, enabling straightforward installation in existing motor control centers. The fuse provides high in-rush current protection for motors, smoothing startup transients and preventing nuisance trips on accelerations. With a documented 200 kAIC interrupt rating, it remains robust against short-circuit events, preserving downstream protection coordination. This is critical in conveyors, pumps, and fans where startup spikes are common. Rated Class RK1, LENRK45 delivers reliable coordination with standard overload protection schemes. The 200 kAIC interrupt capacity supports coordination with upstream fuses and contactors, reducing overall damage risk. This makes it suitable for typical industrial drives and MCCs. At 45 A and 250 V, LENRK45 fits common motor circuits while maintaining a compact form factor of 3 in length and 0.81 in square cross-section. The small size simplifies panel layouts and reduces inventory space. Packaging of 10 units per standard package supports efficient stocking and easy rollout across multiple panels. The LENRK45 also leverages the Eaton Edison fuse family, giving installers a familiar part with consistent labeling and replacement parts. Durables compliance credentials, including CSA Certified and UL Listed, help meet regulatory requirements in North America. The fuse aligns with Eaton's Edison catalog and specifications, ensuring traceability and reliable sourcing for critical motor protection.
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FAQs
LENRK45 is designed for standard Edison fuse clips used in MCCs, with a 3 in length and a square 0.81 in cross-section. It ships in standard 10-piece packs to simplify stocking and reduce downtime during replacements. Use compatible fuse holders rated for 250 V and 45 A, ensuring proper mounting alignment and clean terminal connections for reliable protection in industrial panels.
LENRK45 delivers robust protection for motors during startup thanks to its 45 A rating and 200 kAIC interrupt capability, designed to handle startup transients without nuisance tripping. The Class RK1 designation aligns with common motor protection schemes, enabling reliable coordination with upstream fuses and contactors in typical drives such as conveyors and pumps.
Yes. LENRK45 is CSA Certified and UL Listed, ensuring regulatory compliance for North American installations. These certifications simplify equipment approvals, inspections, and maintenance planning in regulated industries, while maintaining compatibility with Eaton’s Edison fuse family for consistent sourcing and labeling across sites.
LENRK45 is ideal for 250 V motor circuits in industrial settings like conveyors, pumps, and fans driven by motors. Its compact form factor, 3 in length and 0.81 in cross-section, fits tight panels, while the 45 A rating supports typical motor starters. Use in retrofit projects or new builds with standard Edison fuse clips for straightforward integration.
LENRK45 offers predictable maintenance intervals due to its non-indicating design and robust 200 kAIC interrupt rating, reducing unexpected repairs from short circuits. Packaging in standard 10-piece lots minimizes stockouts and downtime during fuse changes, improving overall equipment availability and reducing total cost of ownership in continuous-process environments.