Eaton ER54040UW Enclosed Rotary Disconnect - NEMA 4X
Part Number: ER54040UW
Quick Summary
Eaton enclosed rotary disconnect is a rugged isolation switch for motor and power circuits in industrial facilities. End users often struggle with maintenance access and downtime when selecting non-fusible disconnects, risking safety and productivity. UL Listed and CSA Certified, plus a NEMA 4X stainless steel enclosure, reinforce safety, corrosion resistance, and long-term reliability. Designed for the R-Series family and 600 V systems, this device simplifies procurement, installation, and regulatory compliance while delivering dependable protection for pumps, conveyors, fans, and processing lines.
Product Information
Extended Description
ER54040UW Eaton: Eaton enclosed rotary disconnect switch, 40 A, NEMA 4X, Stainless steel, Max HP:7.5, 7.5, 20, 25 hp (@208,240,480,600 V), Four-pole, Product category: enclosed rotary non-fusible, R-Series, 600 V
Product Name
Eaton enclosed rotary disconnect switch
Catalog Number
ER54040UW
UPC
786685493725
Product Length/Depth
10.4 in
Product Height
6.7 in
Product Width
7.2 in
Product Weight
6.1 lb
Warranty
Eaton Selling Policy 25-000, one (1) year from the date of installation of the Product or eighteen (18) months from the date of shipment of the Product, whichever occurs first.
Certifications
UL Listed CSA Certified
Enclosure
NEMA 4X
Enclosure material
Stainless steel
Number of poles
Four-pole
Series
R-Series
Type
Enclosed rotary disconnect
Amperage Rating
40A
HP rating - max
7.5, 7.5, 20, 25 hp (@208,240,480,600 V)
Voltage rating
600 V
Product Category
Enclosed rotary non-fusible
Commercial Distribution, Switching Devices, Volume 2, Tab 1
Switching Devices Flex Center
Eaton Specification Sheet - ER54040UW
Selling Policy 25-000 - Distribution and Control Products and Services
Feature → Business Impact → Application: The ER54040UW delivers a four-pole, 40A, non-fusible isolation solution that minimizes electrical fault exposure and enhances worker safety, reducing incident response time in maintenance windows. This directly improves equipment uptime and lowers total cost of ownership for metalworking, packaging, and material handling lines. HP ratings of 7.5, 7.5, 20, and 25 hp across 208, 240, 480, and 600 V enable direct replacement in existing motor circuits without reengineering. Application: motor control centers, conveyors, pumps, fans, and processing equipment requiring reliable isolation in demanding environments.
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FAQs
This model uses a four-pole, non-fusible design rated to 600 V and 40A, with a 10.4 in length, 6.7 in height, and 7.2 in width footprint. It aligns with standard mounting patterns for R-Series devices, enabling straightforward retrofit or new installation in control panels and MCCs. Ensure proper enclosure sealing and wiring practices per UL/CSA guidance.
ER54040UW provides 40A amperage, with maximum HP ratings of 7.5, 7.5, 20, and 25 hp at 208, 240, 480, and 600 V respectively. The 600 V voltage rating supports broad industrial motor applications. Four-pole operation ensures robust, simultaneous disconnection of all conductors, enhancing safety during service or lockout/tagout procedures.
Yes. The enclosure is a corrosion-resistant stainless steel construction with a NEMA 4X rating, designed for washdown and harsh environments. This improves longevity in facilities like food and beverage, chemical processing, or outdoor installations, while maintaining electrical integrity and simplifying compliance with environmental protection standards.
ER54040UW is UL Listed and CSA Certified, which streamlines safety and compliance reviews for electrical installations. These certifications verify safe product operation under defined conditions, reducing qualification time for customer facilities, EPCs, and OEM projects. Always reference the latest Eaton specification sheet for installation guidelines.
With a 25-000 warranty policy (one year from installation or 18 months from shipment, whichever occurs first), the ER54040UW offers predictable risk management and support. Regular inspection of the four-pole mechanism, enclosure seals, and terminal connections minimizes downtime. The robust stainless enclosure and 600 V rating contribute to lower replacement frequency in demanding industrial environments.