Eaton MD75E83BCU Motor Isolation Transformer - UL Listed
Part Number: MD75E83BCU
Quick Summary
Eaton MD75E83BCU Motor isolation transformer powers drive systems in industrial automation environments. This device isolates and cleans power for VFDs and motor controllers, reducing transients and coil noise that degrade performance. The unit carries UL Listed safety certification and a DT-3 dry-type distribution design, suitable for ventilated panels, with 60 Hz three-phase operation and a 208 V primary/208Y/120 V secondary. Its copper windings, 75 kVA rating, and 80 °C rise support reliable, long-life performance in demanding applications. The combination of ventilated cooling and WS39 weather shield simplifies installation, helps uptime, and lowers total cost of ownership for panel builders and system integrators. Drive isolation transformer and dry-type distribution design are key considerations for modern motor drive architectures.
Product Information
Extended Description
MD75E83BCU Eaton: Drive Isolation Transformer, Ventilated, Dry Type Distribution, DT-3, Three-phase, PV: 208 delta, Taps: 1 at +5% FCAN, 1 at -5% FCBN, SV: 208Y/120V, 80°C, 75 kVA, Cu windings, Frame: 915D, uses WS39
Product Name
Eaton Motor drive isolation ventilated transformer
Catalog Number
MD75E83BCU
UPC
786680056888
Product Length/Depth
22 in
Product Height
39 in
Product Width
29 in
Product Weight
682 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
Copper
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
208Y/120 V
Temperature rise
80 °C rise
Volt ampere rating
75 kVA
Weathershield
WS39
Feature: Drive isolation and ventilated design → Business Impact: Isolates drive electronics from mains disturbances while providing effective cooling, which reduces nuisance trips and extends drive life. Application: Ideal for motor drive panels and automation cabinets where clean power is critical. Feature: DT-3 dry-type construction → Business Impact: Eliminates liquid cooling needs and reduces maintenance while enhancing operator safety in ventilated enclosures. Application: Suitable for factory floors and open-panel installations. Feature: 75 kVA rating with copper windings → Business Impact: Supports high startup and load demands with low copper losses, improving overall efficiency and reliability. Application: VFDs, servo drives, and motor starters in packaging, metalworking, and process lines. Feature: Primary 208 V delta; secondary 208Y/120 V → Business Impact: Simplifies integration with common plant voltages, reduces wiring complexity, and improves control system compatibility. Application: Panel boards and distribution cabinets. Feature: Taps at +5% and -5% for FCAN/FCBN → Business Impact: Enables voltage compensation to accommodate supply variations, preserving drive efficiency and protection. Application: Facilities with fluctuating electricity supply. Feature: WS39 weather shield and 915D frame → Business Impact: Delivers rugged protection in harsh environments while maintaining a manageable footprint; eases mounting in existing racks. Application: Industrial drives, automation cabinets, and distributed power panels. Certification: UL Listed supports compliance and procurement confidence in regulated environments.
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FAQs
MD75E83BCU fits standard three-phase drive panels and utilizes a 208 V primary with a 208Y/120 V secondary. The 22×29×39 in footprint and 682 lb weight align with typical retrofit projects, while the 915D frame and WS39 shield ease mounting in ventilated enclosures.
This unit operates at 60 Hz in a three-phase configuration with 208 V primary and 208Y/120 V secondary. The 75 kVA VA rating supports motor drives with moderate to high startup loads, and the 80 °C rise ensures operation within safe thermal limits.
Yes. The MD75E83BCU is a Drive Isolation Transformer designed for VFD panels, providing isolation, transient suppression, and improved protection for drive electronics. The ventilated Dry Type DT-3 construction enables reliable cooling in factory environments.
The transformer is UL Listed, indicating compliance with safety and electrical regulations. This certification supports safer deployment in industrial facilities and reduces qualification time for audits and procurement.
With copper windings and a dry-type design, maintenance is minimal and cooling is efficient, reducing operating costs. The robust 75 kVA rating supports reliable motor starts, improving uptime and reducing downtime costs across automation lines.