EP 4089710 A1 20221116 - RESIDUAL CURRENT DEVICE OF 2P2 ANALOG-TO-DIGITAL ELECTROMAGNETIC RESIDUAL CURRENT CIRCUIT BREAKER WITH OVERCURRENT PROTECTION
Title (en)
RESIDUAL CURRENT DEVICE OF 2P2 ANALOG-TO-DIGITAL ELECTROMAGNETIC RESIDUAL CURRENT CIRCUIT BREAKER WITH OVERCURRENT PROTECTION
Title (de)
RESTSTROMVORRICHTUNG EINES 2P2-ANALOG-DIGITAL-ELEKTROMAGNET-RESTSTROMSCHUTZSCHALTERS MIT ÜBERSTROMSCHUTZ
Title (fr)
DISPOSITIF À COURANT RÉSIDUEL DE DISJONCTEUR DE COURANT RÉSIDUEL ÉLECTROMAGNÉTIQUE ANALOGIQUE-NUMÉRIQUE 2P2 À PROTECTION CONTRE LES SURINTENSITÉS
Publication
Application
Priority
- CN 2021114979 W 20210827
- CN 202120662133 U 20210331
Abstract (en)
The present invention relates to a current leakage protection apparatus of a 2P2M electromagnetic residual current circuit breaker with overcurrent protection (RCBO), including a housing, a current leakage tripping action mechanism, and a test circuit mechanism. The test circuit mechanism includes a conductivity test torsion spring, a hinging and linking shaft, and a test button. One end of the conductivity test torsion spring abuts against the test button. The housing is provided with a linkage hole in a direction of a movable contact of the circuit breaker. The other end of the conductivity test torsion spring is embedded in the linkage hole. The housing is provided with a test resistor. The present invention has the following advantages. The current leakage protection apparatus of a 2P2M electromagnetic RCBO improves a structure of a test circuit. Compared with a test circuit module in the prior art, the structure is simple and there is a small quantity of components. In this way, mounting space and costs are reduced, and it's easier for workers to perform overall assembly.
IPC 8 full level
H01H 83/14 (2006.01); H01H 83/04 (2006.01)
CPC (source: EP)
H01H 83/144 (2013.01); H01H 2083/045 (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)
EP 4089710 A1 20221116; EP 4089710 A4 20221116; EP 4089710 B1 20231018; EP 4089710 C0 20231018; CN 214542079 U 20211029; WO 2022205759 A1 20221006
DOCDB simple family (application)
EP 21844614 A 20210827; CN 2021114979 W 20210827; CN 202120662133 U 20210331