EP 3540755 A1 20190918 - CIRCUIT BREAKER CIRCUIT CONTACT PROTECTION MECHANISM

Title (en)

CIRCUIT BREAKER CIRCUIT CONTACT PROTECTION MECHANISM

Title (de)

KONTAKTSCHUTZMECHANISMUS EINES LEISTUNGSSCHALTERS

Title (fr)

MÉCANISME DE PROTECTION DE CONTACT DE CIRCUIT DE DISJONCTEUR

Publication

EP 3540755 A1 20190918 (EN)

Application

EP 19162884 A 20190314

Priority

CN 201810220644 A 20180316

Abstract (en)

Disclosed in the present invention is a circuit breaker circuit contact protection mechanism. The circuit breaker circuit contact protection mechanism comprises a circuit and a moving contact, and an actuating mechanism and a moving contact protective cover; the actuating mechanism drives a first end of the moving contact to move so that the first end comes into contact with or is disconnected from the first contact. The actuating mechanism moves in linkage with the moving contact protective cover and the first end respectively; when the first end is in contact with the first contact, the moving contact protective cover is located outside a region of contact of the first end and the first contact, and when the first end gradually moves away and is disconnected from the first contact, the moving contact protective cover moves towards a region between the first end and the first contact and finally moves to the region between the first end and the first contact. The present invention solves the technical problem of breakdown by high voltage between contacts due to insufficient electric gap and creepage distance when the voltage is too high.

IPC 8 full level

H01H 71/46 (2006.01)

CPC (source: CN EP)

H01H 1/64 (2013.01 - CN); H01H 71/10 (2013.01 - CN); H01H 71/46 (2013.01 - EP); H01H 73/04 (2013.01 - CN); H01H 71/526 (2013.01 - EP); H01H 2050/028 (2013.01 - EP); H01H 2083/045 (2013.01 - EP)

Citation (search report)

[A] DE 3412273 A1 19851010 - KOPP GMBH & CO KG HEINRICH [DE]
[A] US 2002105771 A1 20020808 - SIMMS KEVIN ANTHONY [US], et al
[A] WO 02080329 A1 20021010 - PDL HOLDINGS LTD [NZ], et al

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

DOCDB simple family (publication)

EP 3540755 A1 20190918; EP 3540755 B1 20240214; CN 110277255 A 20190924; CN 110277255 B 20220114

DOCDB simple family (application)

EP 19162884 A 20190314; CN 201810220644 A 20180316