| S.no | Company Name | Founded | Country |
|---|---|---|---|
| 1 | Siemens Corporation | USA | |
| 2 | Trayer Engineering Corp. | USA | |
| 3 | PACS Industries Inc. | USA | |
| 4 | Efacec USA Inc. | USA | |
| 5 | Professional Power Products Inc. | USA | |
| 6 | Sylvania | USA | |
| 7 | National Switchgear Sytems Inc | USA | |
| 8 | Emergency Transfer Controls Inc. | USA | |
| 9 | Electric Power Inc. | USA | |
| 10 | Circuit Breaker Sales North East | USA |
