Eaton MD63E66 Motor Drive Isolation Transformer - UL Listed
Part Number: MD63E66
Quick Summary
The Eaton MD63E66 motor drive isolation transformer provides isolated, clean power for motor drives in industrial automation. Plant engineers wrestle with voltage spikes, harmonics, and downtime that shorten motor life and erode system reliability. Key certifications and design features include UL Listed safety, the DT-3 dry-type distribution design for rugged indoor use, and WS39 weather shield compatibility for harsher environments. With a 63 kVA rating, 460 V primary and 380Y/220 V secondary, the MD63E66 delivers scalable, reliable power that supports higher uptime and lower lifecycle costs. This combination helps integrators meet drive isolation requirements while simplifying procurement and installation for motor-driven systems.
Product Information
Extended Description
MD63E66 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: 380Y/220, 150°C, 63 kVA, Al windings, Frame: 914D, uses WS39
Product Name
Eaton Motor drive isolation ventilated transformer
Catalog Number
MD63E66
UPC
786680057571
Product Length/Depth
22 in
Product Height
39 in
Product Width
29 in
Product Weight
519 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
914D
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
380Y/220 V
Temperature rise
150 °C rise
Volt ampere rating
63 kVA
Weathershield
WS39
Three-phase, dry-type DT-3 design with aluminum windings delivers insulated power with high short-circuit withstand and lower leakage. This translates to improved drive protection against voltage spikes and easier compliance with electrical codes. It’s ideal for motor drives in manufacturing lines where consistent performance and compact footprint matter. Voltage flexibility with primary 460 V, secondary 380Y/220 V and taps at +5% and -5% FCAN/FCBN provides on-site voltage accommodation without transformer swaps. Business impact includes reduced commissioning time, fewer trips due to minor supply variations, and smoother startup sequences for multi-motor drives. Applications span conveyors, pumps, and process equipment in plants with variable feed or staged expansions. Ventilated construction with WS39 weather shield and 914D frame supports reliable operation in controlled indoor spaces and semi-exposed installations. The design promotes effective cooling, minimizes overheating risk, and eases integration into open rack or cabinet environments. Applications include machine rooms and outdoor-friendly installations where weather considerations matter. 63 kVA rating at 60 Hz in a compact footprint provides headroom for motor drive inrush and load growth. This reduces the number of transformers needed on a line and improves overall plant efficiency by consolidating power stages. Suitable for high-demand drives in packaging, material handling, and automation lines. UL Listed certification confirms safety and performance standards compliance for industrial electrical equipment, streamlining procurement and inspection. A 1-year (or 18-month from shipment) Eaton warranty adds risk protection for maintenance planning. Dimensions and weight—22 in L × 29 in W × 39 in H and 519 lb—support accurate site planning and retrofit budgeting. Product dimensions, aluminum windings, and WS39 compatibility together enhance serviceability, enabling straightforward replacement, testing, and future upgrades without disruptive wiring changes.
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FAQs
Plan for a ventilated space matching the 22 in L, 29 in W, 39 in H footprint and the 519 lb weight. Ensure a rigid mounting base, adequate clearance for cooling, and use WS39 weather shield where exposure is a concern. Provide proper three-phase disconnects, wiring routing, and enclosure provisions to maintain derating margins.
The unit operates 60 Hz three-phase with a 460 V primary and a 380Y/220 V secondary. It includes taps at +5% FCAN and -5% FCBN for minor voltage adjustments. Rated at 63 kVA, it’s designed to support motor drive isolation in industrial applications requiring stable output and surge resilience.
UL Listed indicates the transformer meets recognized safety and performance standards for industrial electrical equipment. This supports compliance during purchasing, reduces on-site verification needs, and aligns with quality expectations in regulated environments. Always confirm any local CE or IP requirements specific to your installation, even when UL Listed.
Yes. The DT-3 dry-type design with aluminum windings and WS39 weather shield provides rugged performance in controlled spaces and semi-exposed environments. A 150 °C rise margin supports startup surges and peak loading, while the 63 kVA rating accommodates demanding motor drives common in conveyors, pumps, and process lines.
Eaton backs the MD63E66 with a warranty of one year from installation or eighteen months from shipment, whichever occurs first (policy 25-000). This standard term supports maintenance planning and risk management. For continued reliability, reference the Eaton specification sheet and transformer catalogs for recommended maintenance intervals.