| Subject | English | Portuguese |
| el. | automatic switching device | dispositivo de comutação automática |
| el. | device for instantaneous switching from transmission to reception | dispositivo para passar instantaneamente da transmissão à receção |
| transp., el. | overhead switching device | agulha aérea |
| el. | semiconductor switching device | aparelho de conexão a semicondutor |
| comp., MS, Braz. | single switch device | dispositivo de acionamento 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) |
| comp., MS | single switch device | dispositivo de comutador 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 | comutador-interruptor |
| el. | switching device | dispositivo de comutação |
| el. | switching device | aparelho de conexão |