The Leading Source for Power Quality Solutions
Allient Milwaukee manufactures active (electronic) and passive (magnetic) TCI products to resolve power quality and harmonic issues associated with industrial power conversion. Our experienced staff specializes in developing optimal solutions to achieve IEEE-519 compliance and enhanced motor protection.
Allient Milwaukee, formerly TCI, partners with electrical and machinery OEMs worldwide, to offer both stand alone and integrated harmonics mitigation and power quality solutions. With nearly 70 years of experience in solving complex power quality problems, Allient Milwaukee has the expertise to design the right solution for you.
Our History
Trans-coil, Inc. was founded in 1961 in Milwaukee, Wisconsin. Over the past 60 plus years, we have changed our name to TCI, LLC, upgraded our manufacturing system with Quick Response Manufacturing (QRM) and added an Electronic Product Division to expand our harmonic mitigation products and solutions.
Allied Motion Technologies Inc. acquired TCI in December 2018. Allied Motion is a global company that designs, manufactures and sells precision and specialty motion control components and systems used in a broad range of industries.
In 2023, Allied Motion Technologies changed names to Allient (Allient Nexus Technologies) to reflect the expanded breadth of capabilities and products we offer that go beyond motion. This is a truly exciting time for Allient and made possible by our outstanding employees, partners and customer base.
In 2025, TCI changed names officially to Allient Milwaukee, while still continuing to manufacture and provide the same high quality TCI products to the harmonic mitigation market.
Today Allient Milwaukee, formerly TCI, employs nearly 200 people and is continuously growing in sales revenue. We aggressively pursue the development of new products enabling us to remain technically superior in the marketplace. Over the years our distributor and manufacturer’s representative network has spread across North and South America. Our mission remains to be the supplier of choice for products and support that increase the value and improve the overall system performance of electronic power conversion processes.
Allient Milwaukee has achieved ISO 9001:2015 certification, recognizing that the company’s quality management system meets criteria developed by the International Organization of Standardization of Geneva, Switzerland. This registration covers the Quality Management System for design and manufacture of peripheral products and services for the electronic power conversion industry. Visit the ISO website for more details.
Allient Milwaukee is proud to be a member of Center for Quick Response Manufacturing through the University of Wisconsin-Madison. Check out the latest article, Business Velocity at TCI Creates Barrier to Domestic and Offshore Competition.
Visit the Center of Quick Response Manufacturing to learn more about their university-industry partnership.

