| Electrical | Solid State | Omega Engineering, Inc. | http://www.omega.com |
| Electrical | Solid State | SymCam, Inc. | http://www.symcom.com |
| Electrical | Solid State | WAGO Corp. | http://www.wago.us |
| Electrical |
| Advance Controls Inc. | http://www.acicontrols.com |
| Electrical |
| Air Products & Controls, Inc. | http://www.ap-c.com |
| Electrical |
| Functional Devices Inc. | http://www.functionaldevices.com |
| Electrical |
| Jackson Systems, LLC | http://www.jacksonsystems.com |
| Electrical |
| Lectro Components Inc. | http://www.lectrocomponents.com |
| Time Delay |
| Air Products & Controls, Inc. | http://www.ap-c.com |
| Time Delay |
| ATC-Diversified Electronics | http://www.atcdiversified.com |
| Time Delay |
| Selco Products Co. | http://www.selcoproducts.com |
| Time Delay |
| SSAC | http://www.ssac.com |
| Time Delay |
| WAGO Corp. | http://www.wago.us |