Manufacturing of power, distribution, and special-purpose transformers (excluding commercial, institutional, and industrial general-purpose transformers and parts)

Facility	City	State	Employees	Status
MTMara Technologies USA Inc.	Holly	MI	100–499	◐ LIKELY ACTIVE
MFMenomonee Falls Technical Center	Menomonee Falls	WI	100–499	◐ LIKELY ACTIVE
MMeppi2526	Freedom	PA	20–99	◐ LIKELY ACTIVE
MMeppi512-510	Warrendale	PA	100–499	◐ LIKELY ACTIVE
MMeppi520	Warrendale	PA	100–499	◐ LIKELY ACTIVE
MCMission Critical Group, LLC	Brookston	IN	20–99	◐ LIKELY ACTIVE
MDMorrisville Distributionwarehouse	Morrisville	NC	20–99	◐ LIKELY ACTIVE
NMNA Mfg Anderson	Anderson	SC	500+	◐ LIKELY ACTIVE
NBNational Breaker Services, LLC	Middlebury	CT	20–99	◐ LIKELY ACTIVE
NNexGear (DI)	Durham	NC	500+	◐ LIKELY ACTIVE
NCnVent CGIT	Medway	MA	20–99	◐ LIKELY ACTIVE
NKnVent Kewanee	Kewanee	IL	20–99	◐ LIKELY ACTIVE
OOates	Sacramento	CA	20–99	◐ LIKELY ACTIVE
PCPanel Control Integrators	Anna	OH	20–99	◐ LIKELY ACTIVE
PSPhoenix Satellite	Chandler	AZ	20–99	◐ LIKELY ACTIVE
PPPlant Power and Control Systems, LLC. (2)	Alabaster	AL	20–99	◐ LIKELY ACTIVE
PIPowell Industries - Airport	Houston	TX	500+	◐ LIKELY ACTIVE
RCRaycap CHS	North Charleston	SC	100–499	◐ LIKELY ACTIVE
RBRegal Beloit America, INC	Bowling Green	OH	—	◐ LIKELY ACTIVE
RARusselectric, A Siemens Business	Hingham	MA	100–499	◐ LIKELY ACTIVE
SFSan Francisco Satellite	Hayward	CA	20–99	◐ LIKELY ACTIVE
S&C Electric Company Alameda	Alameda	CA	20–99	◐ LIKELY ACTIVE
S&C Electric Company Chicago	Chicago	IL	500+	◐ LIKELY ACTIVE
S&C Electric Company Franklin	Franklin	WI	100–499	◐ LIKELY ACTIVE
SESchneider Electric	Hopkins	SC	500+	◐ LIKELY ACTIVE
SESchneider Electric	Fairfield	OH	100–499	◐ LIKELY ACTIVE
SESchneider Electric EcoFit North Haven	North Haven	CT	20–99	◐ LIKELY ACTIVE
SESchneider Electric Mount Juliet	Mount Juliet	TN	100–499	◐ LIKELY ACTIVE
SESchneider Electric /Square D	Oxford	OH	500+	◐ LIKELY ACTIVE
SESiemens Electrical Productxs	Pomona	CA	100–499	◐ LIKELY ACTIVE
SISiemens Industry Inc - Spartanburg	Spartanburg	SC	20–99	◐ LIKELY ACTIVE
STSiemens Tucker PDC	Tucker	GA	20–99	◐ LIKELY ACTIVE
SSSmyrna Satellite Assembly	Smyrna	GA	20–99	◐ LIKELY ACTIVE
SESouthern Electrical Equipment Company Site 1	Monroe	NC	100–499	◐ LIKELY ACTIVE
SISouthern Iot LLC	Pearl River	LA	—	◐ LIKELY ACTIVE
SPSpang Power Electronics - OH	Mentor	OH	20–99	◐ LIKELY ACTIVE
SPSpang Power Electronics - PA	Sandy Lake	PA	20–99	◐ LIKELY ACTIVE
SESpike Electric and Controls	Houston	TX	100–499	◐ LIKELY ACTIVE
S2Sps 202	Winneconne	WI	100–499	◐ LIKELY ACTIVE
S2Sps 205	Winneconne	WI	20–99	◐ LIKELY ACTIVE
SMSumter Manufacturing Plant	Sumter	SC	500+	◐ LIKELY ACTIVE
SCSure Controls, Inc.	Greenville	WI	20–99	◐ LIKELY ACTIVE
SASwitchboard Apparatus Inc.	Franklin Park	IL	100–499	◐ LIKELY ACTIVE
SASwitchboard Apparatus Inc. 2	St, Charles	IL	20–99	◐ LIKELY ACTIVE
SASwitchboard Apparatus Inc. 3	Carol Stream	IL	20–99	◐ LIKELY ACTIVE
TCTapeswitch Corporation	Farmingdale	NY	—	◐ LIKELY ACTIVE
TGTDX Global Solutions, LLC.	Anchorage	AK	20–99	◐ LIKELY ACTIVE
TSTechnibus South	Rock Hill	SC	20–99	◐ LIKELY ACTIVE
TTgc-dal	Euless	TX	20–99	◐ LIKELY ACTIVE
TCThe Calvert Company LLC (dba "Avail Bus Systems")	Richland	MS	20–99	◐ LIKELY ACTIVE

FactoryRegistry lists 473 facilities whose primary industry classification is one of the 1 industry above. This is a list by industry, not a list of makers: Census reports that establishments in these industries produced power, distribution, and special-purpose transformers (excluding commercial, institutional, and industrial general-purpose transformers and parts), in the shares shown above, and does not say which establishments. Where a plant’s own website or a federal registry names what that plant makes, it appears on the plant’s own page with the source named.