Eaton MD75E85 Motor drive isolation transformer - UL Listed
Part Number: MD75E85
Quick Summary
Eaton MD75E85 motor drive isolation transformer provides reliable isolation for drive systems in industrial environments. When power quality drops, startup surges, or transients breach panel boundaries, uptime suffers and maintenance costs rise. UL Listed safety certification underpins compliance in machine rooms and panel assemblies. With a 75 kVA dry-type configuration and a 208 V primary feeding 230Y/133 V secondary, it supports reliable automation without oil or venting requirements. This translates to improved efficiency, reduced maintenance, and safer installations across industrial drives and motor control centers. Designed for field reliability, it ships with WS39 weathershield compatibility and a 914D frame for straightforward installation. End-to-end technical documentation and a one-year warranty reinforce procurement confidence in capital projects.
Product Information
Extended Description
MD75E85 Eaton: Drive Isolation Transformer, Ventilated, Dry Type Distribution, DT-3, Three-phase, PV: 208 delta, Taps: 1 at +5% FCAN, 1 at -5% FCBN, SV: 230Y/133V, 150°C, 75 kVA, Al windings, Frame: 914D, uses WS39
Product Name
Eaton Motor drive isolation ventilated transformer
Catalog Number
MD75E85
UPC
786680001284
Product Length/Depth
22 in
Product Height
39 in
Product Width
29 in
Product Weight
541 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
208 V
Secondary Voltage
230Y/133 V
Temperature rise
150 °C rise
Volt ampere rating
75 kVA
Weathershield
WS39
Feature: Dry-type distribution, drive isolation transformer with aluminum windings. Business impact: Oil-free cooling reduces maintenance, lowers fire risk, and simplifies servicing. Application: Ideal for motor control centers and automation cabinets in manufacturing lines, process plants, and packaging facilities where frequent motor starts and transient loads challenge power quality. Feature: 75 kVA rating, three-phase operation at 60 Hz, with a 208 V primary and a 230Y/133 V secondary. Business impact: Delivers sufficient apparent power for demanding drives, minimizes voltage drop during transients, and improves motor performance, throughput, and uptime. Application: Suitable for pumps, fans, conveyors, and machine tools in heavy industry and facilities with variable loads. Feature: Tap changes at +5% FCAN and -5% FCBN. Business impact: Enables precise voltage regulation to compensate for long feeders, utility fluctuations, or wiring losses, reducing nuisance tripping and improving drive efficiency. Application: Critical for remote installations, multi-panel racks, or facilities with unstable power infrastructure. Feature: Ventilated construction with WS39 weather shield compatibility and a 914D frame. Business impact: Enhances cooling capacity, eases installation in tight spaces, and supports durable operation in hot environments. Application: Panel mounting in industrial floors, substations, or factory automation cells where enclosure space is at a premium. Feature: UL Listed certification and documented warranty. Business impact: Supports regulatory compliance, reduces commissioning risk, and provides predictable maintenance planning, helping projects meet timelines and budgets. Application: Any industrial drive or automation installation requiring safety compliance and reputable manufacturer support.
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FAQs
The MD75E85 is a three-phase, 60 Hz transformer with a 208 V primary and 230Y/133 V secondary, designed for standard panel rack integration. It features a 914D frame and WS39 weather shield compatibility to fit common industrial enclosures. Connect primary power per your drive spec, verify clearances for the ventilated housing, and use the +5% and -5% taps to fine-tune voltage under load while monitoring voltage at the drive terminals.
Key performance parameters include a 75 kVA VA rating, 60 Hz operation, and a 150 °C rise rating, with aluminum windings to maintain thermal performance. The dry-type design and ventilated housing help dissipate startup heat, while the 208 V to 230Y/133 V transformation maintains voltage stability during motor starts. Tap changers enable fine adjustment to minimize transient effects.
Yes. The MD75E85 supports industrial motor drives and automation panels, delivering clean, regulated power to three-phase loads. Its 75 kVA rating suits mid- to high-demand drives, and the 230Y/133 V secondary aligns with common automation loads. WS39 weather shield compatibility and the 914D frame simplify integration into existing control cabinets and machine centers.
MD75E85 carries UL Listed certification, a critical factor for safety compliance in control panels and industrial installations. This designation aids in meeting electrical codes and commissioning requirements, reduces inspection risk, and supports safer, more reliable field installations. The documentation and warranty from Eaton further bolster conformity and vendor support during audits.
The oil-free, dry-type design minimizes maintenance tasks and eliminates oil handling hazards, lowering lifecycle costs. The 75 kVA rating and robust aluminum windings improve reliability and uptime, translating to less downtime and more predictable production schedules. With UL listing and Eaton’s warranty, procurement risk is reduced and long-term support is readily available.