| 摘要 |
A switch is disclosed, in particular a power switch, for low voltages. The switch includes mechanically separable contact elements, in abutment when the switch is closed and via which a current to be monitored flows through the switch, an electronic trigger unit, which triggers a respective contact mechanics unit if a current condition is satisfied. In the event of triggering, the contacts are separated and the switch is switched on via the contact mechanics unit. A supply unit is included to extract a first electric energy from the current flowing through the switch to supply the trigger unit with energy. To guarantee energy supply even when switching to a short-circuit, the contact mechanics unit is coupled to a conversion unit, which converts a portion of the mechanical energy to be provided during switching-on into a second electric energy that supplies the trigger unit with electric energy during switching-on. |
