Eaton ER54040UD Rotary Disconnect Switch - UL Listed
Part Number: ER54040UD
Quick Summary
ER54040UD enclosed rotary disconnect switch provides safe motor isolation for industrial equipment. Many maintenance teams struggle with compact, weather-resistant switches that meet code and minimize downtime. UL Listed and CSA Certified ensure compliance for safety-critical motor control in harsh environments, while the rugged NEMA 12/3R enclosure and four-pole design simplify installation and protection. With a 40 A rating and HP range up to 25 hp at 600 V, this Eaton solution delivers reliable performance across modern automation systems. The R-Series construction offers durability and long service life, and factory notes on field modification help tailor protection to rainproof needs at your site. This combination supports efficient maintenance programs and lowers lifecycle costs.
Product Information
Extended Description
ER54040UD Eaton: Eaton enclosed rotary disconnect switch, 40 A, NEMA 12/3R, Painted galvanized 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
ER54040UD
UPC
786685493688
Product Length/Depth
10.4 in
Product Height
6.7 in
Product Width
7.2 in
Product Weight
6.2 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
Catalog Notes
NEMA Type 12 enclosures (16–80A) can be field modified to meet NEMA Type 3R rainproof requirements when a factory-provided drain hole is opened.
Enclosure
NEMA 12, NEMA 3R
Enclosure material
Painted galvanized 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 - ER54040UD
Feature → Business Impact → Application: The 40 A amperage rating paired with a 600 V maximum voltage provides a robust isolation point for motor circuits, reducing fault propagation and downtime in heavy-duty applications. This translates to improved plant reliability and safer maintenance windows in conveyor lines or pump racks. Feature → Business Impact → Application: Four-pole design ensures complete circuit isolation across multi-phase motors, enhancing operator safety and simplifying compliance during audits in food processing or packaging lines. Feature → Business Impact → Application: NEMA 12/3R enclosure with painted galvanized steel offers weather-resistant protection and corrosion resistance, enabling installation in damp or dusty environments such as metal fabrication or water treatment facilities. Feature → Business Impact → Application: HP ratings up to 25 hp at 600 V cover common motor sizes in industrial equipment, allowing a single switch to support multiple stages of motor control, reducing spare parts and maintenance complexity. Feature → Business Impact → Application: Field-modifiable 3R rainproof capability via drain hole adjustment provides flexible protection for outdoor or semi-outdoor installations, minimizing enclosure upgrades and installation costs. Feature → Business Impact → Application: UL Listed and CSA Certified approvals help ensure regulatory compliance, simplifying procurement and supplier qualification processes for certified control panels. Feature → Business Impact → Application: R-Series construction delivers durability and a long service life, supporting total cost of ownership reduction in maintenance-intensive environments such as material handling or process lines.
Get a Quick Quote for a Eaton ER54040UD
Chat with us on WhatsApp - fast responses guaranteed
Need to speak with someone? We'll call you back within 2 hours during business hours
Interested in Eaton ER54040UD?
Enquire Now
FAQs
ER54040UD is designed for NEMA 12/3R enclosures and utilizes a four-pole arrangement suitable for 208/240/480/600 V systems. It can be field-modified for 3R rainproof operation when a drain hole is opened, enabling flexible outdoor or semi-outdoor installation without a full enclosure upgrade.
The switch is rated at 40 A with a 600 V maximum voltage. HP ratings span 7.5, 7.5, 20, and 25 hp across 208, 240, 480, and 600 V, respectively, making it suitable for a range of mid-size motor loads in industrial equipment.
Yes, the product uses NEMA 12 enclosure protection and can be field modified to meet 3R rainproof requirements by configuring a drain hole, enabling reliable outdoor or damp-location use without replacing the enclosure.
ER54040UD is UL Listed and CSA Certified, ensuring compliance with key electrical safety standards for industrial control applications and simplifying audits and vendor qualification.
With a durable painted galvanized steel housing and the four-pole, enclosed rotary non-fusible design, maintenance intervals are extended, downtime is reduced, and the warranty (one year from installation or 18 months from shipment) supports predictable budgeting and total cost of ownership improvements.