Eaton MD330E93 Motor Drive Isolation Transformer - UL Listed
Part Number: MD330E93
Quick Summary
MD330E93 is a motor drive isolation transformer for industrial drive applications. In modern factories, power quality and transient protection are critical to prevent motor stress, nuisance trips, and accelerated component wear. This unit carries UL Listed certification for electrical safety and uses a DT-3 dry-type design with aluminum windings and WS35 weather shield to withstand demanding environments. With a 460 V primary, 575Y/332 V secondary, and a 330 kVA rating, MD330E93 delivers reliable, scalable drive isolation while reducing wiring complexity. This translates to improved uptime, easier compliance, and a lower total cost of ownership when integrated with variable-speed drives. It also supports straightforward installation in existing panels, minimizing downtime during retrofit projects.
Product Information
Extended Description
MD330E93 Eaton: Drive Isolation Transformer, Ventilated, Dry Type Distribution, DT-3, Three-phase, PV: 460 delta, Taps: 1 at +5% FCAN, 1 at -5% FCBN, SV: 575Y/332V, 150°C, 330 kVA, Al windings, Frame: 919E, uses WS35
Product Name
Eaton Motor drive isolation ventilated transformer
Catalog Number
MD330E93
UPC
786680332333
Product Length/Depth
36.23 in
Product Height
75 in
Product Width
44.2 in
Product Weight
2234 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
919E
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
460 V
Secondary Voltage
575Y/332 V
Temperature rise
150 °C rise
Volt ampere rating
330 kVA
Weathershield
WS35
Feature: Three-phase dry-type DT-3 insulation with aluminum windings provides safe, low-maintenance operation in ventilated plant spaces. Business Impact: It reduces thermal aging and enhances reliability, lowering preventive maintenance costs. Application: This combination is ideal for drive isolation in factory floors with variable-speed motors and compact control panels. Feature: Ventilated construction with WS35 weather shield and the 919E frame supports robust cooling and easy installation. Business Impact: Improved heat dissipation translates to stable performance under peak loads and longer transformer life. Application: Suitable for outdoor or harsh interiors where reliable ventilation management is required in drive power trains. Feature: 60 Hz, 460 V primary and 575Y/332 V secondary delivering 330 kVA supports heavy load capacity. Business Impact: Enables direct feed to motor drives from common industrial bus voltages, reducing conversion stages. Application: Perfect for large motors in conveyors, pumps, and metalworking drives. Feature: Tap settings of +5% FCAN and -5% FCBN provide voltage tuning to accommodate supply variations. Business Impact: Minimizes drive input voltage fluctuations, protecting sensitive electronics and reducing nuisance trips. Application: Use in facilities with long feeders or variable utility voltage where exacting drive performance matters. Feature: UL Listed certification with a dedicated enclosure design and WS35 protection ensures compliance and long-term serviceability. Business Impact: Simplifies procurement and reduces risk during audits, while the dry-type construction minimizes fire and environmental concerns. Application: Deploy in control rooms, switchgear, or MCCs across process industries that demand reliable power isolation for motor drives.
Get a Quick Quote for a Eaton MD330E93
Chat with us on WhatsApp - fast responses guaranteed
Need to speak with someone? We'll call you back within 2 hours during business hours
Interested in Eaton MD330E93?
Enquire Now
FAQs
MD330E93 supports a three-phase 460 V input and provides a 575Y/332 V output, making it compatible with standard motor drive panels and MCCs. Its DT-3 dry-type construction, aluminum windings, and WS35 enclosure simplify mounting in existing control rooms and switchgear. When planning retrofit or expansion, verify panel space for the 919E frame and conductors sized for 330 kVA.
Key specs include 60 Hz operation, three-phase configuration, 460 V primary, 575Y/332 V secondary, and a 330 kVA rating. The aluminum windings and DT-3 insulation support reliable operation up to a 150 °C rise, with ventilated cooling. Tap options provide +5% and -5% adjustments to accommodate supply variations and protect connected drives.
MD330E93 excels in industrial drive applications such as conveyor systems, packaging lines, CNC machinery, and metal forming equipment. Its isolation and ventilation characteristics protect sensitive drive electronics from line transients, improve motor life, and simplify power distribution within motor control centers and automated manufacturing cells.
The MD330E93 is UL Listed, confirming adherence to electrical safety standards for industrial transformers. This aids regulatory audits and procurement approvals. For broader global deployments, verify local CE or other regional requirements; the unit’s dry-type design and isolation help meet common safety and installation guidelines when paired with proper enclosure and wiring practices.
Benefits include a robust 150 °C rise design with aluminum windings for long-term reliability, WS35 weather shield for environmental resilience, and a one-year warranty (or 18 months from shipment) per Eaton policy. These factors reduce maintenance frequency, downtime, and capital risk, delivering a favorable total cost of ownership in high-demand drive environments.