To enhance the safety of a distribution terminal by incorporating a push-on-switch near the distributing terminal.

The sensor portion of a push-on-switch is incorporated into the terminal port 1 of the distribution terminal of a plug socket, a table tap, or the like so that the same is energized only when a receiving plug is correctly brought into pressure contact with the terminal port 1. Thereby, electric shock can be prevented caused by the insertion of a metal piece into the terminal port 1.