Switchgear Manufacturers in the US

Acme Electric Company

Cedar Rapids, Iowa125+ employees

Acme Electric Company has been based in Cedar Rapids, Iowa, since 1950, when Donald L. Barrigar purchased Standard Electric and rebranded it as Acme Electric.

Advance Switchboard Distribution

Elk Grove Village, Illinois

ASD designs and builds UL 891 low-voltage switchboards, UL 67 panelboards, and NEMA 1 and 3R enclosures at its manufacturing facility in Elk Grove Village. The shop provides custom design/build engineering, including site visits to tailor gear to space constraints and utility code requirements.

Benfield Control Systems Inc.

Mount Vernon, New York

Benfield Control Systems Inc., operating as Benfield Electric Supply Co. Inc., is headquartered in Mount Vernon, New York, with a second location in White Plains.

C&C Power, Inc.

Carol Stream, Illinois

C&C Power, Inc. was founded in 1993 in Glenview, Illinois.

Coastal Power Systems

Tomball, Texas

Coastal Power Systems operates from Tomball, Texas, in the Houston metropolitan area. The company was founded in 1995 as a supplier of industrial circuit breakers and has since expanded into a full-service provider of electrical power distribution solutions.

DEI Power Solutions

Ontario, California10-49 employees

Founded in 1999 in Ontario, California, DEI Power Solutions operates as a privately held manufacturer of custom low-voltage power distribution equipment. The company maintains its production facility in the Inland Empire region, serving customers across the western United States.

Delta Systems Inc

Streetsboro, Ohio

Delta Systems Inc. was founded in 1972 in Streetsboro, Ohio, when the company began making parts for outdoor power equipment.

EPEC Solutions, Inc.

Clayton, North Carolina

EPEC Solutions, Inc. was founded in 2016 in Clayton, North Carolina, on Christian principles of prayer and servant leadership.

Electric Barn Inc.

North Hampton, New Hampshire

The Electric Barn, Inc. was founded in 1990 in North Hampton, New Hampshire, by a former electrical contractor and master electrician who continues to operate the business.

Electrical Design Technology / General Switchgear

Sacramento, California

Electrical Design Technology, Inc. (EDT) was established in 1984 in Sacramento, California, as a certified Small Business Enterprise focused on power distribution equipment and engineering services.

HiReli LLC

Milford, Delaware

HiReli LLC was founded in 2001 in Milford, Delaware, as a women-owned business certified by the Women's Business Enterprise National Council (WBENC). The company also holds state-level certifications in New Jersey and Delaware and is registered with multiple government agencies.

Industrial Electric Manufacturing (IEMFG)

Fremont, California

Industrial Electric Manufacturing (IEM) traces its roots to 1951 in Fremont, California. Now operating as The New IEM LLC, a subsidiary of IEM Holdings Group, Inc., the company has spent more than seven decades designing and fabricating custom power distribution systems.

Inertia Switch Inc

Orangeburg, New York

Inertia Switch Inc. has operated from Orangeburg, New York, since its founding in 1950.

Instrument Control Company

Salt Lake City, Utah

Today ICC runs a 125,000-square-foot facility that designs, fabricates, and commissions custom control systems and power distribution equipment. Its product line includes UL 508A-certified relay control panels, control buildings and E-houses, skid-mounted solutions, and customized motor control centers.

M&I Electric Industries

Beaumont, Texas

M&I Electric, LLC operates from Beaumont, Texas, where it was established in 1946. The company functions as part of the Myers Power Products group, a collection of businesses that manufacture engineered-to-order and standard medium- and low-voltage power distribution equipment for public and private sector customers.

Maddox Industrial Transformer

Greer, South Carolina400+ employees

Maddox Industrial Transformer was founded in 2015 by a group of transformer industry veterans led by Camden Spiller in Simpsonville, South Carolina. The company is headquartered in Battle Ground, Washington, and operates seven facilities across the United States, including locations in Greer, Pelham, Fountain Inn, and Woodruff, South Carolina; Batavia, Ohio; Moscow, Idaho; and Houston, Texas.

Maverick Power

McKinney, Texas

Maverick Power is headquartered in McKinney, Texas. The company was founded in 2020 as RMS Power by Tom Currier, Chad Dodd, John Baker, and Timmy Brent before evolving into the Maverick Power brand.

Minnesota Valley Electric Cooperative

Jordan, Minnesota

Minnesota Valley Electric Cooperative (MVEC) is headquartered in Jordan, Minnesota. Founded on March 6, 1937, the cooperative was formed when three small electric organizations from Carver, Le Sueur, and Scott counties merged under President Franklin D.

Olsun Electrics Corporation

Richmond, Illinois

Olsun Electrics Corporation has operated from Richmond, Illinois since 1950, when it was established to serve the electronics industry in the greater Chicago area. The original manufacturing space occupied the back of a downtown Richmond building that housed a dentist office in front, where small thimble transformers were wound for a growing OEM customer base.

Olympic Controls Corporation

Bartlett, Illinois120 employees

Olympic Controls Corporation was founded in 1968 and operates from a 61,000-square-foot facility in Bartlett, Illinois, and a 25,000-square-foot facility in Pittsburgh, Pennsylvania. The company manufactures a range of electrical components including switchgear and transformer components (under the Electromagnetic Industries® brand), custom transformers (Acutran®), T-Bar® switches, fuel pumps, relays, and custom-wound coils.

PCX Corporation

Clayton, North Carolina

PCX Corporation was founded in 1993 and operates from its headquarters in Clayton, North Carolina, with a dedicated manufacturing facility in nearby Knightdale. From its start, PCX focused on delivering what it calls "Predictive Profitability®" through integrated system solutions engineered and prebuilt offsite at competitive prices and shortened delivery times.

PEECO

Aston Township, Pennsylvania

Philadelphia Electrical Equipment Company (PEECO) was established in 1981 by founder and chairman Robert Guarini, P.E., in Aston Township, Pennsylvania, a suburb of Philadelphia. Originally a global provider of generators and power control systems, the company has since narrowed its focus to the design and manufacture of medium- and low-voltage switchgear and automated power control systems.

Penn Panel & Box Co

Collingdale, Pennsylvania

Penn Panel & Box Co. has operated from Collingdale, Pennsylvania, since 1955, after its founding in 1938 by Charles Edgar Craven in Philadelphia.

Pennsylvania Transformer Technology, LLC.

Canonsburg, Pennsylvania

Pennsylvania Transformer Technology (PTT) traces its roots to 1929 in Canonsburg, Pennsylvania, where the company now occupies a 1-million-square-foot, 18-building campus on 90 acres — a site that previously housed McGraw-Edison and Cooper Power Systems transformer operations. PTT designs and manufactures oil-filled power transformers ranging from 500 kVA to 750 MVA with voltage ratings through 765 kV, including generator step-up, autotransformers, pad-mount, unit substation, mobile, and specialty industrial transformers.

Powell Industries

Houston, Texas1000+ employees

Powell Industries was founded in 1947 by William E. Powell in Houston, Texas, initially as a metal-working shop serving the local petrochemical industry.