| S.no | Company Name | Founded | Country |
|---|---|---|---|
| 1 | WAGO Corp. | USA | |
| 2 | Rockwell Automation | USA | |
| 3 | Yaskawa America Inc. – Drives & Motion Division | USA | |
| 4 | Amperite Co. | USA | |
| 5 | Struthers-Dunn Inc. | USA | |
| 6 | Omron Automation Americas | USA | |
| 7 | Opto 22 | USA | |
| 8 | IDEC Corp. | USA | |
| 9 | SE Relays | USA | |
| 10 | Thomas Products Ltd. Flow Switch Div. | USA | |
| 11 | Allied Controls Inc. | USA | |
| 12 | Cougar Electronics Corp. | USA | |
| 13 | Hasco Relays & Electronics International Corp. | USA | |
| 14 | TE Connectivity | USA | |
| 15 | Esterline Power Systems | USA | |
| 16 | PICS INC | USA | |
| 17 | NTE Electronics Inc. | USA | |
| 18 | Deltrol Controls | USA | |
| 19 | ABB Control Inc. | USA | |
| 20 | American Zettler Inc. | USA | |
| 21 | Advanced Components Industries Inc. | USA | |
| 22 | Coto Corporation | USA | |
| 23 | Kilovac Products From CII Technologies | USA |
