Top 14 Switchgear Manufacturers in Illinois 2026

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.

C&C Power, Inc.

Carol Stream, Illinois

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

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.

Amperage Electrical Supply

Roselle, Illinois

Amperage Electrical Supply Inc. has operated as a full-line independent electrical distributor from its base in Roselle, Illinois, since its founding in 1997.

Electromagnetic Industries

Bartlett, Illinois

The company emphasizes its U.S.-based production and a culture built around family, employees, and clients. The product line centers on low-voltage current transformers for metering, protection, and relay applications; potential transformers for accurate voltage measurement and isolation; and electronic modules for arc-fault detection and motor control.

Enercon Engineering LLC, A Generac Company

East Peoria, Illinois

Enercon Engineering LLC, based in East Peoria, Illinois, traces its roots back over four decades to a 5,000-square-foot garage. The company was acquired by Generac Holdings Inc.

Illinois Switchboard Corporation was established in 1971 in Addison, Illinois. The company has operated continuously since its founding, focusing on electrical metering and distribution equipment.

LS ELECTRIC America

Lincolnshire, Illinois

LS ELECTRIC America is headquartered in Lincolnshire, Illinois. No founding year for the U.S.

Mitsubishi Electric US, Inc., Industrial Automation

Vernon Hills, Illinois

Mitsubishi Electric US, Inc., Industrial Automation is headquartered in Vernon Hills, Illinois. The division operates as part of Mitsubishi Electric Corporation, which celebrated its 100th anniversary in February 2021.