Supporting NECA Members Nationwide
Wide range of transformers. Delivered on-time.
Tell us what you need and when you're coming. We'll make sure the right sales rep or engineer is ready to help.

Receive an instant quote
See price and availability in real time for transformers you’ll need soon.
Discuss upcoming projects
Meet with transformer experts to plan on-time deliveries for a critical deadline.
Resolve technical questions
Talk to an engineer about a unique specification or application challenge.
Get the show’s best swag
Go home with every electricians favorite t-shirts and hats.

Wide range of transformers. Delivered on-time.
Don't chance it. Book time now.
Don't chance it. Book time now.


The 2026 National Electrical Contractors Association (NECA) Convention and Trade Show is taking place from October 4–7, 2026, at the Mandalay Bay Convention Center in Las Vegas, Nevada.
Yes, Maddox supplies oil-filled and dry-type transformers to projects in all 50 states, as well as Canada, the Caribbean, and select overseas countries. Contact us for more information.
Maddox supplies padmount, substation, and dry-type transformers. We offer new stock, remanufactured, and custom-engineered options so you can meet any deadline and budget requirements.
Yes, we do! With a massive inventory of parts located across the country, we can get you the components you need faster than most supply houses. Meet our parts team at booth #7715.
Getting a quote from Maddox is easy. Email or call us, provide some basic information about the spec you need, and we’ll send you price and availability within 30 minutes.