Eaton MD51E83FCU Motor drive isolation transformer UL
Part Number: MD51E83FCU
Quick Summary
The Eaton MD51E83FCU motor drive isolation transformer provides clean, isolated power for three‑phase drive systems in industrial controls. Plants often battle voltage fluctuations that trigger nuisance trips and shorten drive life, leading to costly downtime. UL Listed certification ensures electrical safety compliance, while the dry-type DT-3 insulation and 115°C rise rating enable dependable operation in harsh industrial settings. In manufacturing environments, this transformer supports improved drive reliability and reduced maintenance costs, delivering a clear business value for control panels and motor drive installations.
Product Information
Extended Description
MD51E83FCU 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: 208Y/120V, 115°C, 51 kVA, Cu windings, Frame: 914D, uses WS39
Product Name
Eaton Motor drive isolation ventilated transformer
Catalog Number
MD51E83FCU
UPC
786680087202
Product Length/Depth
22 in
Product Height
39 in
Product Width
29 in
Product Weight
581 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
Copper
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
208Y/120 V
Temperature rise
115 °C rise
Volt ampere rating
51 kVA
Weathershield
WS39
Feature → Business Impact → Application: Ventilated, dry-type distribution transformer with DT-3 insulation and 51 kVA rating delivers safe, high-quality power with minimal cooling requirements, reducing heat-related failures and extending component life. This translates to lower maintenance costs and improved uptime for critical drive systems in automotive, packaging, and process industries. Application: Use in control rooms and machine enclosures where robust insulation and reliable isolation are essential for continuous production. Feature → Business Impact → Application: Primary 208 V to secondary 208Y/120 V configuration at 60 Hz enables seamless integration with common plant mains and control circuits, simplifying wiring and reducing transformation losses. Application: Feeding drive electronics and control panels from plant power buses with consistent performance. Feature → Business Impact → Application: Tap capability with +5% and -5% adjustments provides voltage regulation during transients, protecting drives from overvoltage and undervoltage conditions. Application: Stable operation for variable loads in rolling stock, conveyors, and stamping lines. Feature → Business Impact → Application: Copper windings and 115°C rise support higher thermal tolerance and conductivity, improving efficiency and reliability. Application: Harsh manufacturing environments requiring durable windings and rapid heat dissipation. Feature → Business Impact → Application: Frame 914D and WS39 weathershield deliver rugged construction and environmental protection, enabling indoor/outdoor distribution in factory floors and maintenance yards. Application: Outdoor transformer deployment in covered spaces or sheltered zones of facilities. Feature → Business Impact → Application: 51 kVA VA rating provides ample headroom for motor drives and auxiliary controls, enabling scalable modernization of existing lines. Application: Upgrade projects where future capacity expansion is anticipated. Feature → Business Impact → Application: Eaton warranty and UL compliance provide risk reduction for procurement, helping maintenance teams align with corporate standards. Application: Projects requiring formal safety validation and favorable total cost of ownership.
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FAQs
Install the MD51E83FCU in a ventilated, enclosure-protected area to maintain the 115°C rise rating. Ensure proper clearance for cooling, connect 208 V three-phase input to the primary, and wire the 208Y/120 V secondary to control circuits or drive electronics. The DT-3 dry-type insulation supports safe operation in typical factory environments.
Key specs include 60 Hz operation, three-phase configuration, 208 V primary, 208Y/120 V secondary, and a 51 kVA rating. These values support stable voltage to motor drives, reduce transients, and accommodate control panels with mixed load demands, enhancing drive performance and reliability in standard industrial setups.
Yes. The transformer is designed as a drive isolation transformer with a dry-type DT-3 insulation system and a robust 51 kVA rating, making it suitable for isolating motor drives and associated controls from main power, helping minimize noise, transients, and insulation stress in manufacturing lines.
The unit is UL Listed, providing recognized electrical safety compliance for industrial installations. Its dry-type DT-3 design and 60 Hz, three-phase operation align with common industrial power distribution practices, supporting safe integration into control panels and drive circuits.
Eaton’s policy provides a one-year warranty from installation or eighteen months from shipment, whichever occurs first. This reduces risk for procurement and maintenance budgeting, while the transformer’s rugged construction lowers planned maintenance and replacement frequency in high-demand production environments.