Eaton MD34E68 Motor isolation - Ventilated, 34 kVA UL Listed
Part Number: MD34E68
Quick Summary
Eaton MD34E68 motor isolation transformer provides isolated, clean power for drive systems across industrial automation and manufacturing lines. In demanding facilities, power disturbances, EMI, and shared neutrals can stress drives and shorten equipment life; this unit isolates the motor to improve reliability and reduce electrical noise. UL Listed certification ensures safety and traceability, while its dry-type, DT-3 design with aluminum windings and WS38 weather shield supports durability in harsh environments. With a 34 kVA rating, 460 V primary and 208Y/120 V secondary, it enables efficient, compact drive panels and tighter voltage control. The MD34E68 delivers power, protection, and practicality for motor drives in packaging, metals, and process industries.
Product Information
Extended Description
MD34E68 Eaton: Drive Isolation Transformer, Ventilated, Dry Type Distribution, DT-3, Three-phase, PV: 460 delta, Taps: 1 at +5% FCAN, 1 at -5% FCBN, SV: 208Y/120, 150°C, 34 kVA, Al windings, Frame: 912B, uses WS38
Product Name
Eaton Motor drive isolation ventilated transformer
Catalog Number
MD34E68
UPC
786680067693
Product Length/Depth
16.5 in
Product Height
30 in
Product Width
23 in
Product Weight
339 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
460 V
Secondary Voltage
208Y/120 V
Temperature rise
150 °C rise
Volt ampere rating
34 kVA
Weathershield
WS38
Commercial Distribution, Transformers, Volume 2, Tab 2
Eaton Specification Sheet - MD34E68
Selling Policy 25-000 - Distribution and Control Products and Services
Dry-type, ventilated DT-3 construction paired with a 34 kVA rating manages heat effectively, reducing winding stress and extending service life. This delivers lower maintenance costs and higher uptime for drive systems, enabling reliable motor control in automation panels and packaging lines. Application: drive isolation in VFD enclosures, where compact footprint and predictable thermal performance are critical. The 460 V primary and 208Y/120 V secondary configuration supports straightforward integration with standard plant power and common motor loads, minimizing wiring complexity and procurement risk. Business impact: simplified sourcing, faster installation, and lower total cost of ownership for mid-size drive architectures. Voltage taps of +5% FCAN and -5% FCBN provide fine voltage regulation, improving drive performance and reducing nuisance trips in fluctuating mains conditions. Application: sensitive drives in manufacturing lines where voltage stability directly influences efficiency. Aluminum windings, frame 912B, and WS38 weathershield offer robust mechanical strength and environmental protection, reducing field servicing and enhancing durability in harsh plant environments. Business impact: improved resilience, longer service intervals, and safer installations in both indoor and outdoor distribution areas. The 150°C rise rating confirms the unit’s capability to handle sustained loads typical of motor drive applications, supporting continuous operation without overheating. Application: critical process control rooms and heavy-duty automation panels. Certification and compliance are reinforced by UL Listed status, providing procurement confidence and traceability for electrical safety standards. In short, this transformer combines power density, protective features, and installation advantages to reduce risk and streamline drive-system implementations.
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FAQs
Install in a ventilated, accessible enclosure or dedicated transformer rack with adequate clearance for cooling. Utilize the WS38 weather shield for protection in exposed environments and ensure supply wiring matches the 460 V primary and 208Y/120 V secondary configuration. Follow UL-listed guidelines and Eaton installation instructions to secure safe, compliant operation.
The MD34E68 is a three-phase, dry-type transformer rated at 34 kVA with a 460 V primary and 208Y/120 V secondary, operating at 60 Hz. It uses aluminum windings, features DT-3 design, and comes in frame 912B with a 150°C rise. Tap settings include +5% FCAN and -5% FCBN to accommodate voltage fluctuations.
Yes. The motor isolation capability and dry-type insulation are well-suited for drive cabinets and automation panels. Its voltage ratings align with common industrial power distribution, reducing integration risk. For best results, ensure proper connection to the 460 V input and 208Y/120 V outputs and respect enclosure and cooling requirements.
The MD34E68 carries UL Listed certification, confirming safety compliance for electrical equipment. Other certifications such as CE or IP ratings are not listed in the provided data; verify your regional requirements with your purchasing team and Eaton documentation for any additional standards.
It provides reliable drive isolation with a robust 34 kVA capacity, reducing drive failures from power disturbances and EMI. The aluminum windings, DT-3 design, and WS38 shield combine durability with ease of installation, lowering maintenance costs and downtime while supporting voltage stability in packaging, metals, and process industries.