The H-J Family of Companies is a worldwide manufacturer and supplier in the transformer, switchgear, and breaker industry. Starting in 1969 with only 800 square feet and a few machines, we have grown through the years to over 400 employees and over 350,000 square feet of manufacturing space. We currently have offices in Brazil, Canada, China, Colombia, India, Mexico, Spain, and our headquarters in St. Louis, Missouri, USA. Over the years we have added tin-plating lines and one of the highest tech foundries in the world. H-J has taken the next step in its extensive customer support program with the development of an independent high voltage test laboratory. This allows us to further advance our product offerings through high quality research and development.

H-J is the leading manufacturer of distribution transformer bushings and connectors in the United States. H-J covers a broad range of products and utilizes state of the art manufacturing. Our expertise includes custom engineered products in epoxy, porcelain, and non-ferrous castings such as brass, bronze, and aluminum.

H-J is one of the leading manufacturers and suppliers of transformer and switchgear components for the world market. H-J supplies products such as porcelain and epoxy bushings, distribution and power transformer components, breakers, drain valves, fuses, aluminum and copper strip, electrical connectors, fuses, insulating oils and many other products.

H-J is among the world's largest users and suppliers of porcelain for the electrical industry. Applications include: transformer bushings, station post insulators, standoff insulators, hollow insulators for instrument transformers, wall bushings, custom designs and many others.

H-J also provides innovative engineering solutions including molded bushing assemblies, breaker bushings, terminal blocks, wall bushings, roof bushings, insulators, transformer LV bushings, disconnect bushings, connectors, isolated phase bus duct, bus supports, core support blocks and more.

H-J owns and operates an import-export company located in the export zone of Tianjin, China. Tianjin is strategically located near Beijing and a major ocean port is within a few minutes drive. The trading office was created to assist companies tapping into the ever more important Chinese market while still dealing with a U.S. company.

The H-J Test Lab can provide test services for its entire spectrum of customers, including Utilities, OEM’s, Repair Shops, Universities and others. The laboratory is located in St. Louis, Missouri, adjacent to the Company’s manufacturing facilities. The floor space of the lab is 100 x 100 feet with a ceiling-to-floor clearance of 50 feet, thus accommodating small to large sized equipment.

We at H-J thank you for the interest shown in our products. The H-J Family of Companies has built its reputation on providing our customers the best possible service, quality, and price. We strive to exceed all of your expectations. If you do not find what you need in our online catalog, please call and speak to one of our sales representatives. Contact our sales team at +1-636-677-3421 or info@h-j.com if you have any questions or for more information.