Eaton MD63E86CU Motor Isolation Transformer - UL Listed
Part Number: MD63E86CU
Quick Summary
Eaton MD63E86CU is a motor drive isolation transformer for dry-type distribution in motor control panels. Engineers often face voltage transients and startup surges that threaten drive longevity and uptime. UL Listed certification supports safe, code-compliant installations, while the DT-3 dry-type design enhances cooling and serviceability. Designed for 63 kVA at 208 V to 460Y/266 V, it helps reduce electrical noise and improve efficiency in industrial drives. This unit pairs copper windings and WS39 protection with a robust 915D frame for reliable performance in harsh environments. With its 60 Hz three-phase rating, accessible taps, and ventilated construction, facilities can simplify maintenance and meet stringent safety standards.
Product Information
Extended Description
MD63E86CU 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: 460Y/266V, 150°C, 63 kVA, Cu windings, Frame: 915D, uses WS39
Product Name
Eaton Motor drive isolation ventilated transformer
Catalog Number
MD63E86CU
UPC
786680051616
Product Length/Depth
22 in
Product Height
39 in
Product Width
29 in
Product Weight
619 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
460Y/266 V
Temperature rise
150 °C rise
Volt ampere rating
63 kVA
Weathershield
WS39
DT-3 dry-type design with a ventilated enclosure delivers efficient cooling and eliminates oil handling, reducing maintenance needs in tight control rooms. This translates to safer installations and lower lifecycle costs in modern plant facilities. It is ideal for motor control centers and packaged machinery where space is at a premium and vented cooling is essential. 63 kVA copper-wound transformer delivers low resistance and robust thermal performance, boosting efficiency and load readiness. This supports reliable operation of mid-range motor drives in manufacturing lines, reducing heat-related derates and improving energy efficiency. Dual voltage taps and 208 V primary with 460Y/266 V secondary enable flexible system integration and voltage matching with drive inputs. With ±5% taps, you can fine-tune voltage to compensate for long feeders or transformer losses, simplifying commissioning. 915D frame, dimensions 22 in length, 29 in width, 39 in height, and WS39 weather shield provide a durable, space-conscious package suitable for harsh environments. This reduces enclosure requirements and accelerates installation in production areas like packaging, metalworking, and material handling. UL Listed safety certification and Eaton warranty ensure ongoing support and compliance. The one-year warranty (18 months from shipment) pairs with solid build quality and copper windings to support lower maintenance costs and faster ROI.
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FAQs
Yes. The MD63E86CU is a three-phase dry-type drive isolation transformer with a 208 V primary and 460Y/266 V secondary, designed for standard industrial panels. It features a 915D frame and a vented WS39 housing for safe operation in typical control rooms. Dimensions are 22 in (L) × 29 in (W) × 39 in (H) with a weight of about 619 lb, allowing straightforward mounting in many equipment racks and steel enclosures. Ensure adequate clearance for cooling and service access during installation.
Key specs include a 63 kVA rating with copper windings, three-phase operation at 60 Hz, 208 V primary voltage, and 460Y/266 V secondary voltage. The unit offers taps at +5% FCAN and -5% FCBN, a 150 °C temperature rise, and a DT-3 design in a 915D frame. These factors influence system impedance, transient response, and compatibility with drives and feeders in industrial applications.
Absolutely. The MD63E86CU is purpose-built for drive isolation in dry-type distribution networks and is well-suited for packaging lines and automation cells. Its WS39 weather shield and ventilated enclosure support robust operation in harsh environments, while the 63 kVA rating handles medium-duty motor drives. The 208 V to 460Y/266 V configuration provides flexibility for common plant power layouts, enabling reliable startup and smoother power delivery to drives.
The transformer carries UL Listed certification, indicating compliance with recognized safety standards for electrical equipment in industrial environments. The dry-type DT-3 construction contributes to robust thermal performance and safe operation in control panels. While other standards may apply depending on installation, UL Listing provides a solid baseline for code-compliant deployment in most jurisdictions.
The MD63E86CU is backed by Eaton’s policy, offering one year of warranty from installation or eighteen months from shipment, whichever comes first. Its copper windings and solid dry-type construction reduce maintenance needs and oil-related concerns, contributing to lower lifecycle costs and faster ROI. Routine checks on ventilation, enclosure clearance, and connection integrity are typically sufficient for long-term reliability.