Electrical Equipment, Appliance & Component Manufacturing in Illinois

NAICS 335 · IL

The Electrical Equipment, Appliance & Component Manufacturing industry in Illinois had 588 establishments, according to the Bureau of Labor Statistics in 2025. This register lists 349 facilities in Illinois. S&C Electric Company Chicago, located in Chicago, employed 2733 people in 2025.

SUMMARIZED FROM THE FEDERAL FIGURES ON THIS PAGE

Plants in Illinois24 FACILITIES

Listing 24 of 31: the facilities with a website, a size band or two sources on record. The rest are in site search.

Facility	City	Employees	Status
Echo, Incorporated	Lake Zurich	500+	● ACTIVE
Hatch Product Development LLC	Wauconda	—	● ACTIVE
Hatch Product Development LLC	Waukegan	—	● ACTIVE
Kor-pak Corporation	Lake Forest	1–19	● ACTIVE
Oeo Energy Solutions, LLC	Lake Zurich	1–19	● ACTIVE
Duvon Lighting, LLC	Buffalo Grove	—	● ACTIVE
Steadfast Supply, LLC	Libertyville	—	● ACTIVE
HLHarger Lightning Protection	Grayslake	100–499	◐ LIKELY ACTIVE
MIMrk Industries INC	Libertyville	20–99	◐ LIKELY ACTIVE
TIThermosoft International Corporation	Vernon hills	20–99	◐ LIKELY ACTIVE
SCSouthwire CO	Waukegan	—	◇ UNVERIFIED
CWClark Wire & Cable CO INC	Mundelein	20–99	◐ LIKELY ACTIVE
PIPowervar INC	Waukegan	—	◐ LIKELY ACTIVE
ITIllinois Tool Works INC	Buffalo Grove	—	◇ UNVERIFIED
MEMitsubishi Electric Automation INC	Vernon Hills	—	◇ UNVERIFIED
OCOneac CORP	Libertyville	—	◇ UNVERIFIED
OSOsram Sylvania Products INC	Lake Zurich	—	◇ UNVERIFIED
BGBuffalo Grove	Buffalo Grove	20–99	◐ LIKELY ACTIVE
BGBuffalo Grove Repair	Buffalo Grove	20–99	◐ LIKELY ACTIVE
HPHatch PD	Waukegan	20–99	◐ LIKELY ACTIVE
IPIl133 Powervar, Mfg	Waukegan	100–499	◐ LIKELY ACTIVE
SHSEL Hawthorn Woods IL	Hawthorn Woods	1–19	◐ LIKELY ACTIVE
SLSEL: Lake Zurich, IL	Lake Zurich	100–499	◐ LIKELY ACTIVE
WWaukegan	Waukegan	100–499	◐ LIKELY ACTIVE

Search all 349 facilities