EP 0454963 B1 19940525 - Switching mechanism for low tension switchgear.
Title (en)
Switching mechanism for low tension switchgear.
Title (de)
Schaltmechanismus für Niederspannungsschaltgeräte.
Title (fr)
Mécanisme de commande pour appareils industriels à basse tension.
Publication
Application
Priority
- DE 4013840 A 19900430
- DE 9004883 U 19900430
Abstract (en)
[origin: EP0454963A1] The aim exists to reduce the size of low-tension switchgears, but on the other hand it is intended to improve the switching power. New requirements now demand that the contacts of the low-tension switchgears close more quickly in order to achieve a small amount of contact erosion and hence a longer life of the low-tension switchgears. The invention indicates a means by which a switching mechanism is produced with only a few individual parts, a bell crank system 2, 3, 4 drives a contact shaft 6 via a switching lever 1, a locking device 9, 10, 11 initially locks the contacts 7, 8 shortly before touching, and, in the case of further operation of the switching lever 1, switches on suddenly, and a trip device 14, 16, 18 opens the contacts 7, 8 in the case of a fault current. Such a switching mechanism can be used in low-tension switchgears, preferably in fault-current protection switches. <IMAGE>
IPC 1-7
IPC 8 full level
H01H 5/04 (2006.01); H01H 21/40 (2006.01); H01H 71/12 (2006.01); H01H 71/52 (2006.01); H01H 73/38 (2006.01)
CPC (source: EP)
H01H 71/52 (2013.01); H01H 2300/048 (2013.01)
Designated contracting state (EPC)
AT CH DE ES FR GB IT LI SE
DOCDB simple family (publication)
EP 0454963 A1 19911106; EP 0454963 B1 19940525; AT E106159 T1 19940615; AU 633425 B2 19930128; AU 7611291 A 19920109; CN 1020521 C 19930505; CN 1056183 A 19911113; DE 4013840 A1 19911031; DE 59101700 D1 19940630; DE 9004883 U1 19900628; ES 2053222 T3 19940716; JP H04230926 A 19920819
DOCDB simple family (application)
EP 91102890 A 19910228; AT 91102890 T 19910228; AU 7611291 A 19910429; CN 91102755 A 19910429; DE 4013840 A 19900430; DE 59101700 T 19910228; DE 9004883 U 19900430; ES 91102890 T 19910228; JP 9868291 A 19910430