| Subject | English | Spanish |
| el. | automatic switching device | dispositivo de conmutación automática |
| el. | device for instantaneous switching from transmission to reception | dispositivo para pasar instantáneamente de la transmisión a la recepción |
| earth.sc. | fast switching device | dispositivo de conmutación rápida |
| transp. | layout in which switches are worked by separate control devices | cambio de agujas de maniobra individual |
| transp., el. | overhead switching device | aguja aérea |
| el. | semiconductor switching device | aparato de conexión de semiconductor |
| comp., MS | single switch device | dispositivo de conmutador único (An assistive computer technology for people with mobility impairments. A single switch device allows users to interact with a computer by using slight body movements) |
| commun. | switching device | conmutador-interruptor |
| el. | switching device | dispositivo de conmutación |
| el. | switching device | aparato de conexión |