Eaton MD75N62 Drive Isolation Transformer - UL Listed
Part Number: MD75N62
Quick Summary
The MD75N62 drive isolation transformer is designed to protect motor drives and power electronics in industrial three-phase systems. Engineers frequently contend with harmonics, voltage transients, and heat inside drive panels, which can shorten equipment life and raise maintenance costs. UL Listed certification provides safety assurance, while the DT-3 dry-type design and WS39 weather-shield compatibility support reliable operation in challenging environments. With a 75 kVA rating and a primary 200/230 V delta, plus a 460Y/266 V secondary and ± taps, it delivers stable performance across motor-drive loads. This transformer integrates with aluminum windings and a 914D frame, delivering a robust solution that fits standard Eaton panels, helping simplify procurement and improve uptime.
Product Information
Extended Description
MD75N62 Eaton: Drive Isolation Transformer, Ventilated, Dry Type Distribution, DT-3, Three-phase, PV: 200/230 delta, Taps: 2 at +2.5% FCAN, 2 at -2.5% FCBN, SV: 460Y/266, 150°C, 75 kVA, Al windings, Frame: 914D, uses WS39
Product Name
Eaton Motor drive isolation ventilated transformer
Catalog Number
MD75N62
UPC
786685017532
Product Length/Depth
22 in
Product Height
39 in
Product Width
29 in
Product Weight
487 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
2 at +2.5% FCAN, 2 at -2.5% FCBN
Type
Dry Type Distribution, Drive Isolation Transformer
Frequency rating
60 Hz
Phase
Three-phase
Primary voltage
200/230 V
Secondary Voltage
460Y/266 V
Temperature rise
150 °C rise
Volt ampere rating
75 kVA
Weathershield
WS39
DT-3 dry-type design provides inherent fire safety and reduced cooling requirements, lowering risk in cabinet installations and improving maintenance cycles. Feature: dry-type ventilation; Business Impact: safer operation and easier installation in controlled environments; Application: motor control centers and panel boards where air circulation is available. The 75 kVA rating ensures power for motor drives without overloading the panel, reducing voltage sag and improving drive response, which translates to higher machine availability in manufacturing lines. Application: welding stations, conveyors, and extrusion lines with heavy motor start-up loads. Tap changes of +2.5% and -2.5% offer voltage tolerance to compensate for fluctuations, enabling smoother VFD performance and longer motor life in variable supply conditions. Application: sites with irregular incoming power or long feeder runs. Aluminum windings resist corrosion and support long-term reliability in industrial atmospheres, while the 150°C rise spec confirms suitability for hot environments. Application: high-temperature enclosures and compact installations where cooling capacity is limited. WS39 Weathershield compatibility expands outdoor or harsh-environment use, giving installers a robust option without extra enclosure costs. Application: outdoor substations and exposed panels, where protection and longevity matter. UL Listed certification provides procurement confidence and standard compliance, aiding vendor qualification and warranty coverage. Application: regulated industries seeking verified safety and performance. Frame 914D and the DT-3 design together enable straightforward mounting in existing Eaton footprints, simplifying retrofits and new builds alike.
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FAQs
Install the MD75N62 as a three-phase, dry-type transformer within a ventilated enclosure to maximize heat dissipation. Ensure clearances for air flow, align with the 914D frame footprint, and provide suitable support for the WS39 weather-shield option. Use the primary 200/230 V delta and connect to the secondary 460Y/266 V with the ±2.5% taps accessible for voltage adjustment. Plan for proper labeling, safe clearance from live conductors, and adherence to UL Listed installation guidelines to maintain reliability in motor drive applications.
Yes. The MD75N62 is a drive isolation transformer designed to protect motors and drive electronics from supply disturbances. Its 75 kVA rating accommodates typical VFD startup currents in medium-size equipment, while the DT-3 dry-type construction minimizes fire risk and simplifies cooling. Connectors and tap settings support standard VFD integration, ensuring stable voltage transfer and reduced harmonics in manufacturing lines.
The MD75N62 carries UL Listed certification, which confirms compliance with recognized safety standards for electrical equipment. This certification helps with procurement approval, aligns with industry safety requirements, and supports warranty and service processes. When sourcing for regulated facilities, UL Listed status reduces risk during audits and installations across control panels and motor drive applications.
The DT-3 dry-type design eliminates liquid cooling, reducing leakage risks and simplifying installation in confined spaces. Ventilation maintains appropriate temperatures, improving reliability and extending component life in demanding environments. This design approach also supports faster commissioning, lower maintenance costs, and safer operation in panel cabinets and outdoor enclosures where moisture and fire hazards are concerns.
The MD75N62 carries Eaton’s warranty policy: one year from installation or eighteen months from shipment, whichever occurs first. For maintenance, rely on the dry-type construction and aluminum windings to reduce moisture-related degradation and corrosion. Regular visual inspections, checking taps, and verifying electrical connections will help sustain performance, with UL safety certification providing ongoing confidence during service and replacements.