Eaton MD93E94 Motor Drive Isolation Transformer - UL Listed
Part Number: MD93E94
Quick Summary
The Eaton MD93E94 motor drive isolation transformer provides clean, isolated power for industrial motor drives. In demanding environments, voltage transients and harmonics can threaten uptime and shorten equipment life, making robust isolation essential. UL Listed certification confirms safety compliance, while the DT-3 dry-type design and a 150°C rise support reliable performance in panel-mounted installations. This transformer supports 60 Hz three-phase systems with a 575 V primary and 230Y/133 V secondary, enabling seamless Eaton drive integration. The result is improved uptime, reduced drift, and easier compliance reporting. For procurement teams, the 93 kVA rating and WS39 weather shield offer installation-ready robustness.
Product Information
Extended Description
MD93E94 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: 230Y/133V, 150°C, 93 kVA, Al windings, Frame: 915D, uses WS39
Product Name
Eaton Motor drive isolation ventilated transformer
Catalog Number
MD93E94
UPC
786680338649
Product Length/Depth
22 in
Product Height
39 in
Product Width
29 in
Product Weight
600 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
915D
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
230Y/133 V
Temperature rise
150 °C rise
Volt ampere rating
93 kVA
Weathershield
WS39
Feature: Dry-type distribution transformer with a ventilated DT-3 design. Business Impact: Improves cooling performance in enclosed motor control panels, reducing heat-related degradation and extending component life. Application: Ideal for compact, panel-mounted drive isolation in automation lines. The Eaton solution minimizes maintenance cycles while delivering predictable voltage isolation across industrial drives. Feature: 575 V primary and 230Y/133 V secondary in a three-phase arrangement. Business Impact: Enables seamless integration with standard industrial power systems and drive MDUs, reducing wiring complexity and startup time. Application: Suitable for packaging, conveying, and process lines that rely on stable drive power. Feature: Tap adjustments (+5% FCAN, -5% FCBN). Business Impact: Provides on-site voltage regulation to maintain drive performance under fluctuating supply conditions, decreasing nuisance trips. Application: Useful where supply quality varies or in facilities with long feeder runs. Feature: Aluminum windings with WS39 Weathershield and 915D frame. Business Impact: Enhances environmental resilience and mechanical protection in harsh manufacturing environments, lowering the risk of moisture or dust ingress. Application: Outdoor or semi-enclosed control rooms where weather exposure is a concern. Feature: 93 kVA rating, 150°C rise, UL Listed. Business Impact: Delivers reliable power for medium-scale drive systems while meeting rigorous safety standards, supporting compliance audits. Application: Medium-power motor drives in steel, plastics, and packaging sectors. Feature: 600 lb weight, 22 in L x 29 in W x 39 in H footprint. Business Impact: Provides a compact, install-ready footprint suitable for retrofit and new builds without large enclosure changes. Application: Retrofit projects in existing motor control centers. Feature: Aluminum coil material and DT-3 design. Business Impact: Reduced core losses and improved thermal performance; eases replacement cycles for high-demand automation. Application: High-uptime drive systems in continuous operation environments.
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FAQs
MD93E94 is designed for panel-mounted installations with a 915D frame and WS39 weather shield. When placing inside a panel, ensure adequate clearance for cooling, verify that 60 Hz three-phase supply is available, and accommodate the 22 x 29 x 39 inch footprint. Use appropriate lugs and compatible protective devices, and follow Eaton installation guidelines to maintain UL Listed status.
The MD93E94 features a 575 V primary voltage and a secondary of 230Y/133 V. It operates at 60 Hz in a three-phase configuration and is rated for 93 kVA, providing isolation and voltage transformation suitable for motor drive applications in industrial environments.
Yes. The MD93E94 is specifically a Dry Type Distribution, Drive Isolation Transformer with a three-phase configuration. Its DT-3 design, aluminum windings, and ventilated cooling support clean power delivery to motor drives while mitigating transients and voltage spikes that can affect drive reliability and motor life.
The MD93E94 carries UL Listed certification, indicating compliance with recognized safety standards for electrical equipment. This supports safer operation in industrial facilities and simplifies regulatory compliance. No CE or IP data is provided in the current specification, so consult Eaton datasheets for any regional certifications beyond UL Listed.
Expected benefits include improved drive uptime due to better power quality, reduced weather-related enclosure risk thanks to WS39 protection, and fewer transients that can shorten motor life. The 93 kVA rating supports scalable drives, enabling predictable maintenance planning and a favorable total cost of ownership in mid-volume automation lines.