Siemens Aktiengesellschaft

Jörg Hussmann

Marvin Tannhäuser

Alfred Stang

Norbert Maschke

Manfred Heindl

Gerhard Blaimer

Steffen Scudlo

Rolf-Eberhard Bruschke

A circuit breaker protects an electric low-voltage circuit, having: a housing with grid-side connections and load-side connections for the low-voltage circuit; and a mechanical separating contact unit connected to an electronic interruption unit in series. The mechanical separating contact unit is paired with the load-side connections, and the electronic interruption unit is paired with the grid-side connections. The mechanical separating contact unit is switched by opening contacts to prevent a current flow or by closing the contacts for a current flow in the low-voltage circuit. Semiconductor-based switch elements of the electronic interruption unit are switched to a high-ohmic state to prevent a current flow or to a low-ohmic state for a current flow in the low-voltage circuit. A current sensor ascertains the level of the current of the low-voltage circuit and a controller is connected to the current sensor, the mechanical separating contact unit, and the electronic interruption unit.

Circuit breaker

Growing community of inventors

Neumarkt, Germany

Jörg Hussmann