Eaton MD40D91BCUESS6 Isolation transformer 40 KVA
Part Number: MD40D91BCUESS6
Quick Summary
Eaton MD40D91BCUESS6 motor drive isolation ventilated transformer delivers clean, isolated power for industrial motor drives. Many panels struggle with voltage sags, electrical noise, and cooling bottlenecks that drive unplanned downtime. Certifications are provided by the manufacturer on request, and in typical deployments common baselines include CE markings and UL listings, with IP-rated enclosure options where applicable. This solution supports scalable automation, enabling safer panel integration and reduced maintenance costs by improving heat dissipation and power quality. Engineered for copper windings and ventilated cooling, it helps plants meet uptime and reliability targets.
Product Information
Extended Description
MD40D91BCUESS6 Eaton: Eaton Motor drive isolation ventilated transformer 40 KVA DRIVE ISOL 3PH 460 DELTA-230Y/133 80C RISE, COPPER
Product Name
Eaton Motor drive isolation ventilated transformer
Catalog Number
MD40D91BCUESS6
UPC
786680134654
Product Length/Depth
0.001 in
Product Height
0.001 in
Product Width
0.001 in
Product Weight
649 lb
Certifications
Contact Manufacturer
Type
Ventilated transformer
Feature: 40 KVA, three-phase rating with copper windings and ventilated cooling. Business Impact: Higher efficiency, lower heat, and improved reliability in motor drives. Application: Drives in OEM machinery and automation lines benefit from reduced thermal stress and longer service life. Feature: Isolation transformer function for 460V delta to 230Y/133V with transformer isolation. Business Impact: Suppresses drive transients and provides clean power for PLCs and VFDs, increasing control stability. Application: Panel-mounted drive systems in packaging and material handling equipment. Feature: Ventilated design and 80°C rise rating. Business Impact: Enhanced cooling under heavy loads reduces derating and downtime; supports compact enclosures. Application: Intense duty cycles in manufacturing floors. Feature: Heavy-duty build, weight 649 lb and robust construction. Business Impact: Safe installation in floor or rack-mounted setups with durable operation over years. Application: Industrial facilities requiring rugged, long-life transformers. Feature: Documentation and compatibility resources. Business Impact: Easy sourcing and lifecycle support via Eaton catalogs and datasheets; simplifies BOM and procurement. Application: System integrators and OEMs integrating MD40D91BCUESS6 into control cabinets.
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FAQs
Plan for a ventilated enclosure and appropriate mounting hardware; ensure adequate space for cooling and access for servicing. The unit weighs 649 lb and supports 3-phase 460V input with a 230Y/133V output, so verify floor or rack mounting clearances and crane access during installation.
The transformer is rated 40 KVA, 3-phase, with 460V delta input and 230Y/133V secondary, copper windings, and an 80°C rise. It is designed for drive isolation in motor control applications, providing robust transient suppression and power quality.
Yes. The MD40D91BCUESS6 is specifically intended for drive isolation, improving power quality and reducing disturbances in automation lines such as packaging, material handling, and machine tools.
Certification details are provided by Eaton upon request. Typical industrial standards for transformers include CE marking and UL listings, with IP-rated enclosure options available where applicable.
The ventilated, copper-wound design minimizes heat and energy losses, supporting longer component life and reduced downtime. Strong vendor support and documented datasheets simplify procurement, installation, and ongoing maintenance, delivering lower total cost of ownership for automation projects.