Eaton MD93E86 Drive Isolation Transformer - UL Listed
Part Number: MD93E86
Quick Summary
Eaton MD93E86 Drive Isolation Transformer provides reliable motor-drive isolation for heavy-duty manufacturing lines. This dry-type, ventilated transformer minimizes electrical noise and transients that can destabilize sensitive drives, helping to reduce unplanned downtime. UL Listed certification ensures safety compliance, while the 150 °C rise rating and 60 Hz three-phase design support demanding industrial environments. By isolating power to motor controls, it improves control accuracy, protects drives and sensors, and extends component life. The MD93E86 also offers installation efficiency in standard electrical rooms thanks to a compact 22 x 29 x 39 in footprint and Eaton’s robust DT-3 design with aluminum windings and WS39 WeatherShield. For procurement teams, this transformer combines proven reliability with predictable maintenance needs and favorable lifecycle costs.
Product Information
Extended Description
MD93E86 Eaton: Drive Isolation Transformer, Ventilated, Dry Type Distribution, DT-3, Three-phase, PV: 208V, Taps: 1 at +5% FCAN, 1 at -5% FCBN, SV: 460Y/266V, 150°C, 93 kVA, Al windings, Frame: 915D, uses WS39
Product Name
Eaton Motor drive isolation ventilated transformer
Catalog Number
MD93E86
UPC
786680001468
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
208 V
Secondary Voltage
460Y/266 V
Temperature rise
150 °C rise
Volt ampere rating
93 kVA
Weathershield
WS39
Feature: 93 kVA three-phase rating with 208 V primary and 460Y/266 V secondary. Business Impact: Supports high-demand motor drives with consistent voltage transfer, reducing under- and over-voltage events that can trigger controller faults. Application: ideal for conveyors, pumps, and automated lines in manufacturing environments. Feature: Dry-type, ventilated DT-3 design with aluminum windings. Business Impact: Eliminates oil handling hazards, simplifies maintenance, and enhances safety in indoor and semi-outdoor spaces. Application: control panels and machine rooms requiring reliable cooling without oil-filled equipment. Feature: Voltage taps at +5% FCAN and -5% FCBN. Business Impact: Improves voltage regulation in plants with variable supply or long feeders, reducing motor torque fluctuations and nuisance tripping. Application: facilities with intermittent or fluctuating incoming power. Feature: Frame 915D with footprint 22 in L × 29 in W × 39 in H and weight 600 lb. Business Impact: Clear installation guidelines fit standard electrical rooms and allow straightforward retrofits or upgrades. Application: retrofit projects and new line installations in factory settings. Feature: WS39 WeatherShield and UL Listed certification. Business Impact: Enhances protection and safety compliance in harsh environments while simplifying procurement and installation. Application: plants requiring rugged protection and regulated safety standards. Feature: 150 °C rise rating and 60 Hz operation. Business Impact: Enables reliable performance under demanding thermal and frequency conditions, supporting long service life. Application: continuous-duty motor-control environments in automation and process industries.
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FAQs
The MD93E86 fits a 22 in L × 29 in W × 39 in H footprint with an approximate 600 lb weight. Plan for ventilated space around the unit for adequate airflow and access to the DT-3 enclosure. Clearance should accommodate service access, cable entry points, and dedicated ventilation to maintain cooling performance in continuous-operation environments.
This model is a three-phase transformer rated at 93 kVA with a primary voltage of 208 V and a secondary voltage of 460Y/266 V. It incorporates taps at +5% FCAN and -5% FCBN to accommodate supply variations, operating at 60 Hz in typical industrial facilities.
Yes. The MD93E86 provides electrical isolation for motor drives, reducing transients and electrical noise that can affect drive controllers and sensors. With aluminum windings, WS39 WeatherShield, and UL Listed safety, it is well-suited for factory automation, robotics, and process lines requiring reliable, isolated power to motors.
MD93E86 is UL Listed, confirming safety certification for electrical devices. The dry-type design and DT-3 construction align with industry best practices for distribution transformers used in motor-drive isolation. No additional certifications are specified in the provided data, so consult Eaton for any updates on CE or other regional certifications if required for your application.
Warranty is Eaton Selling Policy 25-000, offering one year from installation or eighteen months from shipment, whichever occurs first. Maintenance for a dry-type transformer is minimal but should include periodic inspection of ventilation, winding integrity, and connection torque. Utilize WS39 shielding and proper enclosure ventilation to maintain performance and prolong service life.