Founded in 2016, Chicago-based Switched Source develops medium-voltage power-electronics devices that automate how utilities move and balance electricity across existing distribution circuits. Its Tie Controller and Phase-EQ technologies help operators restore service, improve grid flexibility, and accommodate more renewable generation without immediately rebuilding legacy infrastructure. The company expanded into a 20,000-square-foot Chicago production and operations facility in 2025 and is in full compliance with ISO 9001:2015 while pursuing registration.
ISNetworld Approved Vendor
Compliance program
ISO 9001:2015 Compliance
Compliance program
NIST 800-171
Compliance program
Cleaveland/Price IncSince 1975, Cleaveland/Price Inc. has designed and manufactured switching and automation equipment for the medium- and high-voltage electrical industry. Its roots in supplying renewal parts for discontinued Westinghouse switches led to a broader line of group-operated switches rated up to 345 kV, along with automation controllers and power-monitoring equipment. The company’s ongoing research and development includes its “Quick Install” transmission switches, which arrive fully assembled and adjusted to simplify field installation, and its vertically integrated facility uses extensive CNC manufacturing capabilities.TRAFFORD, PA
High Power ProductsFounded in 2015 by a family of fifth-generation electricians and engineers, High Power Products designs and manufactures custom low- and medium-voltage switchgear and power-distribution equipment in Huber Heights, Ohio. Drawing on more than 30 years of electrical-equipment experience, the company combines in-house manufacturing with responsive engineering and accelerated delivery, including new and refurbished transformers for projects that cannot wait on long factory schedules. Its equipment is built for maintainability, with safety and durable service prioritized over a throwaway approach.HUBER HEIGHTS, OH
Quality Switch, IncQuality Switch, a third-generation family-owned company rooted in Warren, Ohio, manufactures custom and standard de-energized tap changers and electrical switches for transformer manufacturers and other power-control applications. Founded as a standalone business in 1974 after its founder began making switches in his machine shop in the 1950s, the Newton Falls company combines switch engineering with in-house design verification. Its Horace H. Sewell High Voltage Testing & Research Center, opened in 2016, supports development and testing at voltages up to 1.2 million volts.NEWTON FALLS, OH
Vesco, LLCFounded in 1996 by former Joslyn Hi-Voltage engineer Cecil R. Wristen, Vesco manufactures vacuum switchgear and controls for electric utilities, steelmaking, and renewable-energy applications. The Mogadore company began by refurbishing Joslyn VBM and VBU equipment and now supplies redesigned replacement parts, new switches, and field service for both Vesco and legacy Joslyn systems. Vesco was acquired in 2021 by former Joslyn executives and technical staff and continues to develop patented control designs alongside installation, maintenance, and training services.MOGADORE, OH