Eaton MD34E95 Drive Isolation Transformer - UL Listed
Part Number: MD34E95
Quick Summary
MD34E95 is a drive isolation transformer that delivers clean, isolated power for motor drives in industrial automation and packaging equipment. Engineers face voltage transients, harmonics, and grounding challenges that threaten motor life and control stability. This unit carries UL Listed certification and uses a DT-3 dry-type design with aluminum windings for rugged, long-life service in demanding environments. By providing robust isolation and a 34 kVA rating, it enhances drive performance, reduces downtime, and lowers maintenance costs. The 575 V primary and 460Y/266 V secondary configuration with 1 at +5% and 1 at -5% taps supports reliable VFD operation and straightforward integration with Eaton systems.
Product Information
Extended Description
MD34E95 Eaton: Drive Isolation Transformer, Ventilated, Dry Type Distribution, DT-3, Three-phase, PV: 575 delta, Taps: 1 at +5% FCAN, 1 at -5% FCBN, SV: 460Y/266V, 150°C, 34 kVA, Al windings, Frame: 912B, uses WS38
Product Name
Eaton Motor drive isolation ventilated transformer
Catalog Number
MD34E95
UPC
786680338328
Product Length/Depth
16.5 in
Product Height
30 in
Product Width
23 in
Product Weight
360 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
912B
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
575 V
Secondary Voltage
460Y/266 V
Temperature rise
150 °C rise
Volt ampere rating
34 kVA
Weathershield
WS38
Feature → Business Impact → Application: The DT-3 dry-type isolation design provides inherent electrical isolation and EMI suppression, delivering safer, more stable motor drive operation and extending drive life in harsh plant environments. This translates to reduced nuisance faults and longer uptime in automated lines, such as packaging and material handling. Feature → Business Impact → Application: A 34 kVA rating with a 575 V primary and 460Y/266 V secondary supports substantial motor load without over-sizing, enabling compact installations and lower cable runs in industrial facilities. Feature → Business Impact → Application: Voltage taps at +5% FCAN and -5% FCBN enable on-site voltage optimization, reducing equipment stress and improving regulator performance in plants with fluctuating supply. Feature → Business Impact → Application: Aluminum windings and WS38 ventilated cooling ensure thermal reliability and corrosion resistance, supporting long service life in dry indoor spaces or semi-exposed environments. Feature → Business Impact → Application: Frame 912B and standard dimensions simplify retrofits and new installs, reducing installation time and avoiding custom enclosures, while UL Listed certification reinforces compliance with safety requirements. Feature → Business Impact → Application: The combination of vented cooling and a UL-listed DRY-type transformer minimizes risk of overheating and simplifies regulatory approvals for motor drive applications across manufacturing sectors.
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FAQs
When installing the MD34E95, reference its 16.5 in depth, 23 in width, and 30 in height with a 360 lb weight to ensure proper mounting clearances. It uses a DT-3 dry-type design with aluminum windings and WS38 weathershield, and is rated for 60 Hz three-phase operation with a 575 V primary and 460Y/266 V secondary. Plan for ventilated cooling and accessible tapping (+5% FCAN, -5% FCBN) for voltage adjustment during commissioning.
Yes. The MD34E95 provides a 575 V primary delta and 460Y/266 V secondary suitable for many 3-phase motor drives and VFDs. It supports ±5% voltage taps to accommodate supply variations, and its 34 kVA rating handles substantial drive loading. For best results, verify input/output voltage compatibility and ensure the drive accepts 460Y/266 V secondary without excessive harmonics.
The MD34E95 carries UL Listed certification, reflecting compliance with recognized safety standards for electrical equipment. This helps streamline regulatory approvals in many regions. Confirm any region-specific certification requirements with your compliance team prior to purchase if CE or other marks are needed for your application.
The transformer is a ventilated, dry-type distribution unit with WS38 weather protection, designed for reliable operation in controlled environments. It supports a 150°C temperature rise and aluminum windings for improved thermal performance and durability. Ventilated cooling helps manage load transients common in motor-drive applications, reducing the risk of overheating during peak demand.
Eaton provides a standard warranty aligned with policy 25-000: coverage for one year from the date of installation or eighteen months from shipment, whichever occurs first. This warranty supports proactive maintenance planning and replacement timing for industrial automation deployments, with access to Eaton service channels for field support and technical guidance.