EP 4377984 A1 20240605 - CIRCUIT BREAKER AND METHOD
Title (en)
CIRCUIT BREAKER AND METHOD
Title (de)
SCHUTZSCHALTGERÄT UND VERFAHREN
Title (fr)
DISJONCTEUR ET PROCÉDÉ
Publication
Application
Priority
- DE 102021210833 A 20210928
- EP 2022075225 W 20220912
Abstract (en)
[origin: WO2023052105A1] The invention relates to a circuit breaker for protecting an electric low-voltage circuit, comprising: - a housing with at least one grid-side connection and a load-side connection, and - a mechanical separating contact unit which is connected to an electronic interruption unit in series, wherein - the mechanical separating contact unit is paired with the load-side connection, and the electronic interruption unit is paired with the grid-side connection, - the level of the current in the low-voltage circuit, in particular between the grid-side phase conductor connection and the load-side phase conductor connection, is ascertained, - a process for preventing a current flow in the low-voltage circuit is initiated if current thresholds and/or current/time thresholds are exceeded, - a measurement impedance is provided between two conductors of the low-voltage circuit, said measurement impedance being connected to the connection between the mechanical separating contact unit and the electronic interruption unit (EU), and - while the contacts of the mechanical separating contact unit are open and the electronic interruption unit is switched to a high-ohmic state, the electronic interruption unit is switched to a low-ohmic state for a first duration in order to check the functionality of the circuit breaker.
IPC 8 full level
H01H 9/54 (2006.01); H01H 71/12 (2006.01)
CPC (source: EP)
H01H 9/548 (2013.01); H01H 71/12 (2013.01)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
DE 102021210833 A1 20230330; CN 118020129 A 20240510; EP 4377984 A1 20240605; WO 2023052105 A1 20230406
DOCDB simple family (application)
DE 102021210833 A 20210928; CN 202280065362 A 20220912; EP 2022075225 W 20220912; EP 22777619 A 20220912