Square D Featured Transformers 3 Phase 266V AC/460V AC

ESU buys and sells new & used Transformers.

Square D Three Phase Drive Isolation Transformer: 266V AC/460V ACR

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.


Drive isolation transformer is not a shielded isolation transformer, but act to lessen transient generation into the supply power and allow for high surge, harmonic and offset currents. It is designed for the requirements of both adjustable frequency and dc motor drive power isolation. This transformer was made for the mechanical stress of dc drive current spikes, as well as the thermal and mechanical stress of highly cyclic process control applications.

ESU Inc has been in the electrical supply business for over 40 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.

Electrical Supplies Unlimited (ESU) is your trusted source for all your electrical equipment needs in San Diego, Orange, and Riverside Counties. With over 40 years of experience, ESU has been a reliable partner for electricians and homeowners alike, offering a comprehensive range of new, surplus, and recycled electrical equipment. Our inventory includes premium products like the Square D Featured Transformers, including the 3 Phase 266V AC/460V AC models, known for their quality and reliability. Whether you're tackling a professional project or a DIY home improvement task, ESU provides top-notch electrical equipment to meet your needs. Trust ESU for all your electrical supply needs, backed by decades of industry expertise and a commitment to excellence.

Featured Transformer Specifications

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

Mfr. Model #

7T145HDIT