| S.no | Company Name | Founded | Country |
|---|---|---|---|
| 1 | WEG Electric Corp. | USA | |
| 2 | Yaskawa America Inc. – Drives & Motion Division | USA | |
| 3 | Littelfuse Inc. | USA | |
| 4 | Siemens Corporation | USA | |
| 5 | Eaton Crouse-Hinds Division | USA | |
| 6 | Esterline Power Systems | USA | |
| 7 | HBcontrols Inc. | USA | |
| 8 | NTE Electronics Inc. | USA | |
| 9 | Johnson Electric | USA | |
| 10 | Fuji Electric | USA | |
| 11 | Mercury Displacement Industries Inc. (MDI Inc.) | USA | |
| 12 | PICS INC | USA | |
| 13 | Zettler Controls Inc. | USA | |
| 14 | Sylvania | USA | |
| 15 | Perfect Switch LLC | USA | |
| 16 | Macromatic Industrial Controls Inc. | USA | |
| 17 | TE Connectivity | USA | |
| 18 | Deltrol Controls | USA | |
| 19 | STK Electronics Inc. | USA | |
| 20 | Carlo Gavazzi Inc. | USA | |
| 21 | Sealed Unit Parts Co. Inc. | USA | |
| 22 | American Zettler Inc. | USA |
