The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 26, 2026
Filed:
Jun. 29, 2022
Siemens Aktiengesellschaft, Munich, DE;
Marvin Tannhäuser, Hausen, DE;
Fabian Döbler, Theilenhofen, DE;
Felix Frei, Marienberg Ot Zöblitz, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
A circuit breaker for protecting electric low-voltage circuits includes a housing with grid-side connections and a load-side connection. A mechanical isolating contact unit is series-connected to an electronic interruption unit. The isolating contact unit pairs with the load-side connection, and the electronic interruption unit pairs with the grid-side connections. The current level in the low-voltage circuit, between a grid-side phase conductor connection and load-side phase conductor connection, is ascertained. Prevention of current flow in the low-voltage circuit is initiated upon exceeding current thresholds and/or current/time thresholds. A series circuit of a measuring impedance and switch in the circuit breaker between conductors of the low-voltage circuit causes a measuring current flow through the electronic interruption unit via the grid-side connections when the switch is closed and the electronic interruption unit is switched to low-ohmic state.