Eaton MD34E83 Motor drive isolation transformer - UL Listed
Part Number: MD34E83
Quick Summary
The Eaton MD34E83 motor drive isolation ventilated transformer protects drive electronics in 3-phase low-voltage motor systems. In demanding industrial environments, cooling efficiency, reliability, and ease of maintenance directly impact uptime. It is UL Listed for safety and compliance, with a DT-3 dry-type design and a 912B frame that support rugged, long-life installations. This solution pairs 34 kVA capacity with 208 V primary and 208Y/120 V secondary to optimize power quality, while WS38 weather shielding helps protect equipment in harsh environments. By integrating with Eaton's drive devices, it simplifies panel design and reduces integration risk, delivering predictable performance and reduced operating costs.
Product Information
Extended Description
MD34E83 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, 150°C, 34 kVA, Al windings, Frame: 912B, uses WS38
Product Name
Eaton Motor drive isolation ventilated transformer
Catalog Number
MD34E83
UPC
786680058714
Product Length/Depth
16.5 in
Product Height
30 in
Product Width
23 in
Product Weight
340 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
912B
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
150 °C rise
Volt ampere rating
34 kVA
Weathershield
WS38
Ventilated dry-type DT-3 design reduces insulation stress and improves cooling, enhancing reliability in continuous motor drive service. The 34 kVA rating at 60 Hz with a three-phase configuration delivers robust power conditioning for motor control centers, minimizing voltage drop and harmonics at the load. Voltage taps of +5% and -5% FCAN/FCBN enable precise voltage regulation in facilities with variable supply, reducing motor stress and downtime. Aluminum windings paired with WS38 weather shielding provide durable performance in indoor or sheltered outdoor environments, supporting easy installation in compact spaces thanks to a 16.5 in depth, 23 in width, and 30 in height footprint. A compact 912B frame references Eaton’s proven mechanical compatibility for fast panel integration and serviceability.
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FAQs
For proper installation, ensure adequate ventilation around the ventilated dry-type transformer and respect the footprint of 16.5 in (depth) by 23 in (width) with a 30 in height. Plan for mounting on a sturdy surface compatible with the 912B frame and account for the 340 lb weight. Provide clearance for service and access to the WS38 weather shield housing if used outdoors or in exposed environments.
Key specs include a 34 kVA rating, 60 Hz, three-phase, with a primary voltage of 208 V and secondary of 208Y/120 V. It features taps at +5% FCAN and -5% FCBN for voltage regulation, aluminum windings, and a 150 °C rise. The unit uses a DT-3 dry-type design with WS38 weather shield for rugged applications.
Yes. The MD34E83 is a drive isolation transformer designed for motor control centers and VFD-driven loads. Its dry-type construction and ventilated cooling support continuous operation, minimizing drive noise and electrical interference while preserving power quality. It’s compatible with 208 V mains and provides 208Y/120 V secondary for control circuits.
The MD34E83 carries UL Listed certification, which validates electrical safety and compliance for industrial equipment. This certification supports procurement decisions and helps ensure compatibility with safety programs in many facilities. The design also emphasizes a rugged DT-3 dry-type construction suitable for demanding environments.
The unit’s ventilated dry-type design and aluminum windings reduce thermal stress and corrosion concerns, contributing to longer service life. The 34 kVA rating supports robust uptime for motor drives, while the WS38 shield protects against environmental exposure. Eaton’s warranty policy adds reassurance, and the compact frame simplifies panel integration, reducing maintenance overhead during swaps or upgrades.