Eaton MD440E96 Motor Drive Isolation Ventilated Transformer - UL Listed
Part Number: MD440E96
Quick Summary
Eaton MD440E96 Motor Drive Isolation Ventilated Transformer isolates drive power for robust three-phase motor systems. Engineers often wrestle with voltage transients and heat rise that threaten uptime and shorten motor life. UL Listed certification confirms compliance with electrical safety standards, while the DT-3 design and 150°C rise support demanding industrial environments. This solution also positions you for scalable, compliant power distribution in motor control centers, with compatible WS35 enclosures and aluminum windings.
Product Information
Extended Description
MD440E96 Eaton: Drive Isolation Transformer, Ventilated, Dry Type Distribution, DT-3, Three-phase, PV: 575 delta, Taps: 1 at +5% FCAN, 1 at -5% FCBN, SV: 575Y/332V, 150°C, 440 kVA, Al windings, Frame: 919E, uses WS35
Product Name
Eaton Motor drive isolation ventilated transformer
Catalog Number
MD440E96
UPC
786680339141
Product Length/Depth
36.23 in
Product Height
75 in
Product Width
44.2 in
Product Weight
2566 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
Coil material
Aluminum
Design
DT-3
Frame
919E
Tap size
1 at +5% FCAN, 1 at -5% FCBN
Type
Dry Type Distribution, Drive Isolation Transformer
Frequency rating
60 Hz
Phase
Three-phase
Primary voltage
575 V
Secondary Voltage
575Y/332 V
Temperature rise
150 °C rise
Volt ampere rating
440 kVA
Weathershield
WS35
Ventilated, dry-type construction reduces thermal buildup, increasing insulation life and tolerance to ambient conditions, which lowers maintenance intervals and improves uptime in harsh plants. The 575 V primary and 575Y/332 V secondary provide flexible site integration, enabling a single transformer to support multiple motor drives and simplifying panel design. With a 440 kVA rating, the unit handles substantial drive loads, reducing footprint and installation complexity in mid- to large-scale automation lines. DT-3 design with aluminum windings offers robust, heat-efficient performance and lighter weight for easier handling and installation. Tap options at +5% FCAN and -5% FCBN allow voltage regulation to match utility and load conditions, enhancing drive performance and reliability. WS35 weather shield and frame 919E extend service in outdoor and high-dust environments, improving protection and reducing maintenance overhead. Overall, the combination supports safer, compliant installations with predictable performance and lower total cost of ownership.
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FAQs
MD440E96 uses a 575 V primary and delivers 575Y/332 V secondary, aligning with standard three-phase power rails in motor control centers. Its dimensions (36.23 in L, 75 in H, 44.2 in W) and 919E frame are designed for compatibility with WS35 enclosures and common Eaton panels, simplifying retrofit projects and minimizing integration risk.
Key specs include 440 kVA rating, 60 Hz, three-phase operation, DT-3 design, aluminum windings, temperature rise of 150 °C, and taps at +5% FCAN and -5% FCBN. This combination delivers strong isolation from supply transients, efficient power transfer to connected drives, and reliable protection for sensitive motor equipment in demanding environments.
MD440E96 is well suited for manufacturing, packaging, and material handling where large motor drives require dependable isolation. It supports motor control centers, conveyors, pumps, and automated lines, delivering consistent voltage regulation and protection for multiple drives in a single, ventilated dry-type transformer package.
The MD440E96 is UL Listed, indicating compliance with essential electrical safety standards for industrial equipment. This certification supports regulatory acceptance, insurance requirements, and safer installation in factory floors and control panels, complemented by the DT-3 dry-type design and robust, framed construction.
Plan routine insulation temperature checks, monitor the WS35 housing condition, and verify voltage taps ( +5% FCAN, -5% FCBN ) for local supply variations. ROI is driven by reduced downtime, longer motor life, lower maintenance costs, and safer operation thanks to durable dry-type construction and UL safety certification.