ESU buys and sells new & used Transformers.

SQUARE D 266V AC/460V AC Three Phase Drive Isolation Transformer, 150°C Temp. Rise, Aluminum 

Electrical Supplies Unlimited buys and sells new Circuit Breakers, Transformers, Fuses, Switches, Plugs and more for San Diego surrounding areas  We will buy your used Transformers.


 Three Phase Drive Isolation Transformer

Input Voltage - 480V AC Delta

Output Voltage - 266V AC; 460V AC Wye

VA Rating - 7.5 kVA

Mounting - Floor


ESU Inc has been in the electrical supply business for over 30 years. We have a large inventory of new, surplus and recycled electrical supplies both for the commercial and residential markets. We are a fully stocked Electrical Distributor and Electrical Wholesaler with many different lines in stock. We specialize in  hard to find items. Our staff is very knowledgeable and our mission is to ensure that our customers expectations are exceeded. Ask around, our reputation is what makes us! Or just call to find out yourself at 858.558.2850.

We stock most major brands including General Electric, ITE Siemens, Cutler Hammer, Square D, FPE Federal Pacific, Pushmatic, Zinsco, Crouse Hinds, Challenger, Westinghouse, Sylvania, and Bryant.

Featured Transformer Specifications

Three Phase Drive Isolation Transformer
Phase - ElectricalThree
Input Voltage - 480V AC Delta
Output Voltage -266V AC; 460V AC Wye
VA Rating - 7.5 kVA
Mounting - TransformerFloor
Outdoor Rated - No
Voltage Function - Step Down
Winding Material - Aluminum
Hz - Electrical60 Hz
Temp. Rise150 °C
Enclosure RatingNEMA 2
Enclosure MaterialSteel
Width20 in
Height27 in
Depth16 in
Knockout Size - Transformer1 in; 3/4 in
Includes Weathershield


Country of OriginUSA (subject to change)


This transformer is designed to offer consistent, smooth voltage transformation at 480VAC input. With these energy effiecient transformers and general application three phase transformers, you can choose from the following additional types of transformers: • Drive Isolation Transformers, which decrease line current waveform distortion, improving the power factor of the motor drive load.