Eaton MD075E88ZZ Open core-coil transformer - UL Recognized
Part Number: MD075E88ZZ
Quick Summary
Eaton MD075E88ZZ provides a dry-type distribution transformer for drive isolation in industrial power systems. Maintaining stable voltage amid motor starts and load swings is a common challenge in modern plants. UL Recognized certification supports electrical safety compliance, while the open-core, ventilated DT-3 design with aluminum windings improves cooling and reliability for continuous operation. This solution integrates seamlessly with three-phase distributions and provides a clear path to compliant enclosure layouts. By offering precise voltage transformation with 7.5 kVA capacity and selectable taps, it supports safer startup sequences and reduced thermal cycling. Use cases include motor control centers, drive systems, and critical equipment feeds, delivering efficiency gains and reduced maintenance costs.
Product Information
Extended Description
MD075E88ZZ Eaton: Drive Isolation Transformer, Ventilated, Dry Type Distribution, DT-3, Three-phase, PV: 230 delta, Taps: 1 at +5% FCAN, 1 at -5% FCBN, SV: 230Y/133V, 150°C, 7.5 kVA, Al windings, Frame: 908S
Product Name
Eaton Open core-coil ventilated transformer
Catalog Number
MD075E88ZZ
UPC
786680056154
Product Length/Depth
14.12 in
Product Height
30 in
Product Width
20.12 in
Product Weight
188 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 Recognized
Catalog Notes
Open type core and coil assembly
Coil material
Aluminum
Design
DT-3
Frame
908S
Tap size
1 at +5% FCAN, 1 at -5% FCBN
Type
Dry Type Distribution, Drive Isolation Transformer
Frequency rating
60 Hz
Kva Rating
7.5 kVA
Phase
Three-phase
Primary voltage
230 V
Secondary Voltage
230Y/133 V
Temperature rise
150 °C rise
Open core-coil ventilated design improves air flow and cooling in compact electrical rooms, reducing heat buildup and extending insulation life; this leads to lower maintenance intervals and higher system availability in automation environments. Aluminum windings offer robust conductivity with lighter weight than copper equivalents, easing handling during installation while improving thermal performance in the 908S frame. The 7.5 kVA three-phase configuration with a 230 V primary and 230Y/133 V secondary aligns with common plant distributions and motor-control panels, enabling plug-in compatibility and straightforward integration with existing drives operating at 60 Hz. Tap changes at +5% FCAN and -5% FCBN provide on-site voltage fine-tuning to mitigate line drop and voltage sag without replacing hardware, enhancing reliability in varied utility conditions. UL Recognized certification supports safety compliance and reduces engineering risk, while the dry-type construction minimizes fire risk in ventilated enclosures. The combination of footprint, weight (188 lb), and frame (908S) supports practical installation in standard electrical rooms, with Eaton’s catalog compatibility simplifying sourcing and service planning. This transformer is well-suited for drive isolation, motor control, and feeder applications where consistent voltage and cooling performance translate into measurable uptime and reduced maintenance cost.
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FAQs
MD075E88ZZ is a dry-type, three-phase drive isolation transformer used to safely transform voltage for motor drives and automation panels. With a 7.5 kVA rating and a 230 V primary to 230Y/133 V secondary, it supports reliable voltage conditioning in distributed power architectures while maintaining open-core, ventilated cooling for steady performance.
Key specs include a 7.5 kVA rating, three-phase configuration, 60 Hz frequency, primary voltage of 230 V, secondary voltage of 230Y/133 V, aluminum windings, a 908S frame, and taps at +5% FCAN and -5% FCBN. It is designed for dry-type distribution and drive isolation with a 150 °C rise rating.
Yes, the MD075E88ZZ carries UL Recognized certification, indicating compliance with established electrical safety standards. This designation supports safer deployment in industrial plants, simplifies regulatory approvals, and aligns with standard installation practices for dry-type transformers in drive isolation applications.
Plan for a ventilated space where open-core assemblies can dissipate heat effectively. The unit weighs 188 lb and fits a 14.12 in x 20.12 in x 30 in footprint with a 908S frame, so ensure adequate mounting, enclosure clearance, and access for tapping adjustments. Optional voltage taps (+5% and -5%) should be configured on-site to match supply conditions.
Applications include motor control centers, drive systems, CNC or automation panels, and other three-phase distribution feeders needing voltage transformation with isolation. The combination of 7.5 kVA capacity, open-core cooling, and ventilated construction supports reliable operation in demanding industrial environments while enabling safer startup sequences and reduced thermal cycling.