Eaton MD75E69 Motor Drive Isolation Transformer - UL Listed
Part Number: MD75E69
Quick Summary
The Eaton MD75E69 Motor Drive Isolation Transformer provides clean, isolated power for three-phase motor drives in industrial control panels. Engineers frequently wrestle with voltage sags, transient spikes, and harmonics that degrade drive life and uptime. UL Listed safety certification accompanies a dry-type DT-3 design and WS39 weather shield, enabling dependable indoor installations in harsh environments. This solution supports industrial automation with a scalable 75 kVA rating and compatible 480 V to 400Y/231 V outputs, improving panel reliability. Its aluminum windings and frame 914D facilitate straightforward retrofit and service access across existing Eaton installations, delivering measurable improvements in maintenance efficiency and system uptime.
Product Information
Extended Description
MD75E69 Eaton: Drive Isolation Transformer, Ventilated, Dry Type Distribution, DT-3, Three-phase, PV: 480 delta, Taps: 1 at +5% FCAN, 1 at -5% FCBN, SV: 400Y/231, 150°C, 75 kVA, Al windings, Frame: 914D, uses WS39
Product Name
Eaton Motor drive isolation ventilated transformer
Catalog Number
MD75E69
UPC
786685266978
Product Length/Depth
22 in
Product Height
39 in
Product Width
29 in
Product Weight
536 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
480 V
Secondary Voltage
400Y/231 V
Temperature rise
150 °C rise
Volt ampere rating
75 kVA
Weathershield
WS39
Feature → Business Impact → Application MD75E69 delivers 75 kVA of three-phase power at 480 V primary and 400Y/231 V secondary, providing robust drive isolation for VFDs. This improves voltage regulation and reduces drive faults, translating to lower downtime in packaging lines and conveyors. Application: motor drives in automated processes benefit from cleaner power and extended equipment life; suitable for control panels in manufacturing settings. Feature → DT-3 dry-type construction with aluminum windings reduces fire risk and oil stewardship concerns while enabling compact indoor installations. Impact: safer, cooler operation with simplified maintenance; Application: machine centers and robotics cells. Feature → Tap changes plus 5% +/- adjustments (1 at +5% FCAN, 1 at -5% FCBN) enable real-time voltage tuning. Impact: improved motor performance under load variation; Application: retrofits and new builds where supply conditions fluctuate. Feature → Frame 914D with WS39 weather shield supports rugged indoor installation and straightforward mounting. Impact: faster commissioning and lower enclosure costs; Application: panel builds and distribution rooms. Feature → UL Listed certification and Eaton documentation provide regulatory confidence and consistent serviceability. Impact: compliance assurance and predictable warranty fulfillment; Application: regulated facilities and OEM installations.
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FAQs
MD75E69 is designed for indoor, dry locations and fits standard DT-3 frame installations with a 914D enclosure. Its dimensions (22 in, 29 in, 39 in) and 536 lb weight support straightforward retrofits or new builds in control panels, with easy mounting and established clearances for safe service access.
Key specs include a 75 kVA rating, 480 V primary, and 400Y/231 V secondary at 60 Hz in a three-phase configuration. Tap changes provide +5% and -5% adjustments. Aluminum windings and WS39 weathershield enable reliable indoor operation, while the DT-3 dry-type design minimizes maintenance complexity.
Ideal for drive isolation in motor control applications, such as conveyors, packaging lines, and pumps. It mitigates voltage spikes and harmonics feeding VFDs, improves control panel reliability, and supports scalable automation projects with stable power delivery to heavy-duty drives.
The unit is UL Listed, providing safety compliance for industrial electrical equipment. Its dry-type design, three-phase 60 Hz operation, and documented specifications in the Eaton datasheet further support regulatory alignment and dependable service in manufacturing environments.
Expect reduced drive failures and downtime due to improved power quality and isolation. With a 75 kVA capacity, it supports demanding loads while maintaining reliability. Warranty terms specify one year from installation or 18 months from shipment, and access to the Eaton specification sheet aids in installation best practices and future service planning.