| S.no | Company Name | Founded | Country |
|---|---|---|---|
| 1 | WAGO Corp. | USA | |
| 2 | Opto 22 | USA | |
| 3 | SE Relays | USA | |
| 4 | Jameco Electronic Components & Computer Products | USA | |
| 5 | Hasco Relays & Electronics International Corp. | USA | |
| 6 | Automation Systems Interconnect Inc. | USA | |
| 7 | Mercury Displacement Industries Inc. (MDI Inc.) | USA | |
| 8 | Kraus & Naimer Inc. | USA | |
| 9 | NTE Electronics Inc. | USA | |
| 10 | Perfect Switch LLC | USA | |
| 11 | Allied Controls Inc. | USA | |
| 12 | Stetron International Inc. | USA | |
| 13 | Comus International | USA | |
| 14 | Unisys Corp. | USA | |
| 15 | HBcontrols Inc. | USA | |
| 16 | Time Mark Corp. | USA | |
| 17 | Camco Breaker & Controls Inc. | USA |
