EP 0554540 B1 19961106 - Rotary cam switch
Title (en)
Rotary cam switch
Title (de)
Nockendrehschalter
Title (fr)
Commutateur rotatif à cames
Publication
Application
Priority
DE 4203429 A 19920206
Abstract (en)
[origin: EP0554540A2] The invention relates to a circuit for preventing short-circuits during a phase change, particularly in the case of rotary cam switches. In order to prevent dangerous short-circuit conditions with arc formation on the main contacts during an unavoidable phase change, the invention provides auxiliary contacts which are opened before the main contacts switch during the phase change. In order to ensure the switching sequence in both rotation directions, a lost-motion coupling is provided between the switching cams of the auxiliary contacts and of the main contacts in such a manner that the main contacts are switched in a delayed manner after a predetermined rotation angle. <IMAGE>
IPC 1-7
IPC 8 full level
H01H 9/38 (2006.01); H01H 19/62 (2006.01)
CPC (source: EP)
H01H 9/38 (2013.01); H01H 19/62 (2013.01)
Designated contracting state (EPC)
DE FR GB IT SE
DOCDB simple family (publication)
EP 0554540 A2 19930811; EP 0554540 A3 19940209; EP 0554540 B1 19961106; DE 4203429 A1 19930812; DE 59207495 D1 19961212
DOCDB simple family (application)
EP 92120692 A 19921204; DE 4203429 A 19920206; DE 59207495 T 19921204