EP 0070248 B1 19860416 - ISOLATING SWITCH
Title (en)
ISOLATING SWITCH
Publication
Application
Priority
DE 3127960 A 19810710
Abstract (en)
[origin: US4539450A] A disconnect switch has a fixed tubular contact, an associated fixed auxiliary contact connected thereto, and a movable tubular contact which is guided in a stationary outer housing. The movable tubular contact contains a movable auxiliary contact. Both movable contacts are separately movable into connection with the fixed contacts. To enable the switch to be used for higher voltages while achieving short pre-breakdown times and using a drive which operates at normal speed, the movable auxiliary contact is at first latched against movement, compressing a spring. The movable auxiliary contact is then released to actuate the switch. To this end, each end of the movable auxiliary contact is provided with a catch which can be engaged by a cooperating pawl located at either end of the travel of the auxiliary contact. A control member is longitudinally movable on the movable auxiliary contact. A spring is mounted between the control member and each of the catches. The control member is coupled to the movable tubular contact via a reduction drive.
IPC 1-7
IPC 8 full level
H01H 31/32 (2006.01); H01H 33/12 (2006.01)
CPC (source: EP US)
H01H 31/32 (2013.01 - EP US); H01H 33/121 (2013.01 - EP US)
Designated contracting state (EPC)
CH DE FR LI NL SE
DOCDB simple family (publication)
EP 0070248 A2 19830119; EP 0070248 A3 19840425; EP 0070248 B1 19860416; CA 1227517 A 19870929; DE 3127960 A1 19830127; DE 3270584 D1 19860522; US 4539450 A 19850903
DOCDB simple family (application)
EP 82730078 A 19820611; CA 407029 A 19820709; DE 3127960 A 19810710; DE 3270584 T 19820611; US 39416382 A 19820701