Eaton MD93E95 Motor Drive Isolation Transformer - UL Listed
Part Number: MD93E95
Quick Summary
Eaton MD93E95 Motor Drive Isolation Transformer isolates and conditions power for drive systems in industrial plants. Engineers often grapple with voltage transients, heat buildup, and space limitations when integrating motor drives. UL Listed safety certification ensures compliance, while the DT-3 dry-type design and WS19 weather shield support reliable operation in harsh environments. This solution delivers reliable power isolation with scalable 93 kVA capacity and field-adjustable taps, driving improved uptime and lower lifecycle costs for your automation projects.
Product Information
Extended Description
MD93E95 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: 460Y/266V, 150°C, 93 kVA, Al windings, Frame: 916A, uses WS19
Product Name
Eaton Motor drive isolation ventilated transformer
Catalog Number
MD93E95
UPC
786680338663
Product Length/Depth
23.42 in
Product Height
48.56 in
Product Width
28.22 in
Product Weight
754 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
916A
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
460Y/266 V
Temperature rise
150 °C rise
Volt ampere rating
93 kVA
Weathershield
WS19
Feature → Business Impact → Application: The MD93E95 delivers 93 kVA three-phase capacity with a 575 V primary and 460Y/266 V secondary, built as a DT-3 dry-type distribution transformer with aluminum windings. This combination reduces voltage transients seen by sensitive drive electronics, protecting motor control networks and improving drive reliability in manufacturing lines. Application: use in industrial drive systems where robust isolation and ventilation are required to minimize nuisance trips and downtime. Feature → Business Impact → Application: Ventilated dry-type construction enhances heat dissipation, enabling sustained operation in compact switchgear footprints and in moderate outdoor environments when paired with WS19. Application: ideal for plant floor installations with limited cooling, extending transformer life and reducing maintenance cycles. Feature → Business Impact → Application: 1 tap at +5% and 1 tap at -5% FCAN/FCBN provides precise voltage adjustment to accommodate supply variance. Application: supports fine-tuning for critical drive loads, improving control stability. Feature → Business Impact → Application: UL Listed certification confirms global safety compliance, while the DT-3 design and aluminum windings offer durable performance under demanding industrial conditions. Application: suitable for standard industrial facilities seeking compliant, long-life power isolation. Feature → Business Impact → Application: Weathershield WS19 enables outdoor or harsh-environment installation with protective enclosure compatibility. Application: outdoor substations or exposed equipment bays requiring weather protection. Warranty and service: Eaton’s 1-year warranty from installation (or 18 months from shipment) provides assurance during initial deployment, decreasing risk for capital-intensive projects.
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FAQs
The MD93E95 is designed for three-phase 575 V primary systems and provides a 460Y/266 V secondary suitable for motor drive inputs. Ensure your switchgear has adequate clearance for the frame size (916A) and ventilation. Use the +5% and -5% taps to accommodate supply variance and verify proper grounding and enclosure compatibility before energizing. This minimizes unnecessary inrush and voltage spikes at startup.
With a 93 kVA rating, three-phase 60 Hz operation, and aluminum windings, the MD93E95 is optimized for drive isolation, reducing voltage transients and protecting VFDs. The DT-3 design supports dry-type cooling with a 150 °C rise rating, enabling reliable operation in demanding environments. The ventilated construction aids heat removal during peak load, maintaining performance and longevity.
Yes, when paired with the WS19 weathershield, the MD93E95 is suited for outdoor or harsh environments. Its ventilated dry-type design avoids oil-related maintenance, while aluminum windings resist corrosion. This combination makes it ideal for outdoor switchgear housings or exposed installation where weather protection and robust isolation are required.
The MD93E95 is UL Listed, signaling conformity with recognized safety standards for electrical equipment. This certification supports compliance for industrial facilities and equipment used in regulated environments. Always verify site-specific compliance requirements and confirm any additional regional standards applicable to your project.
As a dry-type transformer with aluminum windings and a ventilated design, the MD93E95 requires minimal oil-related maintenance and offers lower fire risk. The 93 kVA rating supports scalable motor drive isolation, reducing downtime from transients and nuisance trips. The included warranty (one year from installation or 18 months from shipment) adds risk reduction during the initial deployment, contributing to a favorable total cost of ownership.