Eaton MD330E96 Motor drive isolation transformer - UL Listed
Part Number: MD330E96
Quick Summary
Eaton MD330E96 is a motor drive isolation ventilated transformer designed for rugged industrial power conditioning in motor drive systems. In demanding plant environments, drives and controls require reliable isolation and ventilation to prevent nuisance trips, voltage spikes, and unplanned downtime. The unit is UL Listed, uses a DT-3 dry-type design, and relies on WS35 weather shielding, enabling flexible indoor or outdoor installation. By combining high efficiency, voltage taps, and robust aluminum windings, it helps reduce maintenance costs while supporting uptime in automation projects.
Product Information
Extended Description
MD330E96 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: 575Y/332V, 150°C, 330 kVA, Al windings, Frame: 919E, uses WS35
Product Name
Eaton Motor drive isolation ventilated transformer
Catalog Number
MD330E96
UPC
786680339080
Product Length/Depth
36.23 in
Product Height
75 in
Product Width
44.2 in
Product Weight
2263 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
919E
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
575Y/332 V
Temperature rise
150 °C rise
Volt ampere rating
330 kVA
Weathershield
WS35
Drive isolation and ventilation are built into the MD330E96 as a dry-type transformer using the DT-3 design for predictable performance in demanding automation racks. This configuration minimizes environmental risk by eliminating oil, while improving heat dissipation in confined drive enclosures and simplifies maintenance planning for OEMs. It is well-suited for motor control centers and automated lines where clean power and isolation are essential for uptime, reducing nuisance trips and protecting sensitive VFD components. Primary 575 V and secondary 575Y/332 V outputs, combined with a 60 Hz three-phase rating, deliver compatible power conditioning for standard industrial drives across a broad range of motor types. The 330 kVA rating provides ample headroom for motor start currents and load transients, reducing the need for parallel transformers or auxiliary equipment while supporting energy efficiency during peak loads. This headroom also accommodates future drive upgrades and motor load growth without a new transformer. The dual taps (+5% FCAN and -5% FCBN) allow fine voltage adjustment to compensate for line voltage fluctuations without sacrificing protection, ensuring drive input stability. This capability supports consistent VFD performance, reduces nuisance trips, and extends motor life across variable loads even when supply voltage fluctuates due to grid events. The taps are factory-set with clear documentation to avoid mismatch during field voltage compensation, and technicians receive voltage test procedures. Aluminum windings and the 919E frame optimize thermal and mechanical performance, even under extended uptime cycles. WS35 weather shielding expands installation options from indoor MCCs to outdoor switchgear by providing protection against wind-driven rain, dust, and temperature extremes. The dry-type construction also simplifies maintenance and shortens MTTR if a cooling issue arises through accessible components and minimal servicing. UL Listed certification confirms compliance with safety standards, and Eaton’s warranty policy provides protection for installation or shipment timing, aligning with project timelines. Field service and spares support from Eaton help minimize downtime.
Get a Quick Quote for a Eaton MD330E96
Chat with us on WhatsApp - fast responses guaranteed
Need to speak with someone? We'll call you back within 2 hours during business hours
Interested in Eaton MD330E96?
Enquire Now
FAQs
MD330E96 is a rugged, dry-type DT-3 transformer designed to mount inside motor control centers or standalone transformer enclosures. For best results, ensure adequate ventilation, clearance for WS35 shield, and proper mounting to frame 919E. Verify the 575 V primary and 575Y/332 V secondary conform to your drive's input and bus configuration. Use the 60 Hz supply and align taps as needed to match voltage conditions and protection schemes.
DT-3 dry-type design eliminates oil, reducing environmental risk and simplifying maintenance. Aluminum windings provide good heat dissipation, and the 150 °C rise rating indicates tolerance to hot plant conditions. Ensure ventilation with WS35 and maintain proper mounting clearances to sustain performance under high ambient temperatures in manufacturing floors, switchyards, and automated lines.
Yes, the MD330E96 supports 575 V to 575Y/332 V configurations in three-phase 60 Hz systems. The 330 kVA rating provides ample headroom for motor start currents and load transients, reducing the need for parallel transformers or auxiliary equipment. This capacity also helps absorb peak loads, improve drive stability, and support future expansion without quick reengineering.
MD330E96 carries UL Listed certification, indicating compliance with standard electrical safety requirements for industrial equipment. The DT-3 dry-type design, WS35 shielding, and aluminum windings contribute to safe operation, ease of maintenance, and resilience in harsh environments. Compliance is further supported by documented warranties and installation guidance from Eaton.
Investing in the MD330E96 delivers predictable power conditioning and improved uptime due to robust cooling and isolation. Maintenance costs decrease with a dry-type design that eliminates oil handling, while a 330 kVA rating reduces the need for additional equipment. The UL Listed certification supports regulatory compliance, and Eaton's warranty and support services help minimize downtime during commissioning and retrofit projects.