Hard-to-find and obsolete parts in stock. Open to the public. Serving contractors, facilities managers, and individuals across Oklahoma since 1984.
ESI has been serving Oklahoma City since 1984. We specialize in new, used, and refurbished industrial electrical equipment — with a deep inventory of hard-to-find and obsolete parts that other suppliers simply can't provide.
Whether you're a licensed contractor, a facilities manager keeping a plant running, or an individual with a specific need, we're open to the public and ready to help.
Walk-ins welcome. Bring your part number or a description and we'll do our best to match it.
New, used, and refurbished — we stock the full range of industrial electrical components.
Starters, contactors, overload relays, and variable frequency drives from leading manufacturers including Allen-Bradley, Siemens, Square D, and GE.
Circuit breakers, panelboards, switchboards, and disconnect switches. New and reconditioned units available.
Distribution transformers, control transformers, and isolation transformers. Dry-type and liquid-filled units in stock.
Industrial lighting fixtures, ballasts, drivers, occupancy sensors, and lighting control panels.
Plug-in busway, feeder busway, bus duct fittings, and associated hardware for industrial power distribution.
Our specialty. If it's discontinued or out of production, we likely have it. Bring us your part number.
Beyond supplying equipment, ESI offers hands-on services to keep your operations running.
We buy and sell industrial electrical surplus. If you're downsizing, upgrading, or liquidating, we'll make you a fair offer on your equipment.
Can't read the nameplate? Don't know the part number? Bring it in — our team has decades of experience identifying hard-to-source industrial parts.
Need something specific? Tell us what you need and we'll work our network of suppliers to find it for you — often at a fraction of new pricing.
Select equipment undergoes professional testing and refurbishment. Ask about availability of reconditioned units with performance guarantees.
"They had the obsolete Allen-Bradley starter I've been hunting for six months. In stock, fair price, same day. These guys are the real deal."
"ESI has been our go-to for surplus electrical equipment for years. Knowledgeable staff, good inventory, and they always shoot straight with pricing."
"Called about a hard-to-find transformer. They not only had it, they tested it before I picked it up. That kind of service is rare."
"Best prices in Oklahoma on used switchgear. I've saved my company thousands buying through ESI instead of going new."
Have a part number? A description? A photo? Reach out and we'll let you know if we have it and what it'll cost.