Eaton LESRK450 Fuse - Class RK1, 200 kAIC, 600 V
Part Number: LESRK450
Quick Summary
The Eaton LESRK450 fuse protects motors against inrush while enabling reliable protection in motor control panels. Engineers often wrestle with nuisance trips and undersized protection when upgrading drives with high inrush, which can cause downtime and maintenance overhead. This device carries CSA Certified and UL Listed certifications, supporting compliance across North America, while the Class RK1 design provides predictable protection coordination with upstream devices. With a 450 A current rating and 600 V rating, it fits common motor circuits and MCCs, reducing stocking complexity. For integrators and OEMs, the fuse offers standard packaging and straightforward replacement, delivering faster serviceability and lower total cost of ownership.
Product Information
Extended Description
LESRK450 Eaton: Eaton Edison LESRK fuse, Non-indicating, High in-rush current motor protection, Electrically isolated end caps, 450 A, Class RK1, 200 kAIC, Standard, 1, 600 V
Product Name
Eaton Edison LESRK fuse
Catalog Number
LESRK450
UPC
782634548560
Product Length/Depth
13.38 in
Product Height
2.88 in
Product Width
2.88 in
Product Weight
3.44 lb
Warranty
No warranty
Compliances
Not Applicable
Certifications
CSA Certified UL Listed
Amperage Rating
450 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
450 A current rating is tailored for large motor feeds, delivering precise protection without oversizing fuses. The business impact is lower wear on protective devices and reduced nuisance trips, which translates to higher line availability in process equipment. This is ideal for motor control centers (MCCs) and drive-fed motor circuits in construction, packaging, and pump stations. An interrupt rating of 200 kAIC provides headroom for high fault currents, increasing protection margin and reducing the risk of arcing. The application benefit is improved system reliability during short-circuit events while maintaining selectivity with upstream fuse gear, especially in OEM equipment and retrofit projects. The 600 V voltage rating covers standard industrial controls, MCCs, and variable frequency drives, enabling straightforward integration with existing electrical infrastructure and simplifying sourcing for maintenance teams. A non-indicating fuse with electrically isolated end caps minimizes panel indicators and improves safety during maintenance, allowing technicians to handle end caps without energizing the circuit, which supports faster replacement in crowded control panels. Certifications include CSA Certified and UL Listed, providing essential safety validation for industrial environments and reducing compliance risk across regulated sectors such as food and beverage, water treatment, and automotive manufacturing. The combination of standard packaging and 1-piece quantity streamlines procurement and reduces inventory complexity, delivering consistent performance across product lifecycles.
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FAQs
Yes. LESRK450 is designed for motor control centers and drive-fed motor circuits, offering 450 A protection with 600 V rating and Class RK1 coordination. It integrates with Eaton Edison components and adheres to CSA Certified UL Listed standards, ensuring compatibility with common MCC architectures and regulatory expectations for industrial electrical panels.
LESRK450 provides a 450 A amperage rating, a 200 kAIC interrupt rating, and a 600 V voltage rating. These specifications deliver robust protection for high inrush motor loads while maintaining headroom for short-circuit events, supporting reliable operation in large motor feeders and critical drive applications.
LESRK450 is optimized for high inrush conditions thanks to its Class RK1 construction and high interrupt rating. The 450 A rating aligns with mid-to-large motors, reducing nuisance trips during startup. Its non-indicating design simplifies panel maintenance, while CSA UL certifications provide confidence in safety and compliance for industrial environments.
LESRK450 carries CSA Certified and UL Listed certifications, which validate electrical safety and performance for North American markets. These certifications help ensure regulatory compliance, support quality assurance during audits, and facilitate procurement for engineers seeking proven, standards-aligned protection for motor circuits.
Plan for a standard packaging type with a 13.38 in length, 2.88 in width, and 2.88 in height, weighing about 3.44 lb. The device features electrically isolated end caps for safer maintenance, a non-indicating indicator, and a single-unit quantity per package. It is engineered for straightforward mounting in standard electrical panels and MCCs with 600 V systems.