EP 0550927 B1 19980415 - Selective automatic safety switch
Title (en)
Selective automatic safety switch
Title (de)
Selektiver automatischer Sicherheitsschalter
Title (fr)
Interrupteur de sécurité automatique sélectif
Publication
Application
Priority
NL 9102057 A 19911210
Abstract (en)
[origin: EP0550927A1] Safety switch for the selective protection of electrical installations, comprising a self-closing first switching unit (12) and a first actuation device (13) interacting with the latter for undelayed opening of the first switching unit (12) in the case of a short-circuit current, a second switching unit (17) connected in series with the first switching unit (12) and a second actuation device (20) interacting with the second switching unit (17) for delayed opening of the second switching unit (17) in the case of an overload current, and a third actuation device (24) interacting with the second switching unit (17) for delayed opening of the second switching unit (17) in the case of the occurrence of a short-circuit current, which third actuation device (24) is connected to a shunt path (26) which comprises current-limiting means (27) and which bridges at least the first switching unit (12). Because the first switching unit (12) is provided with delay means (28) for keeping said first switching unit (12) open for an adjustable period of time, the switch-selective action of the safety switch can be accurately set. <IMAGE>
IPC 1-7
IPC 8 full level
H01H 71/10 (2006.01); H01H 71/44 (2006.01)
CPC (source: EP)
H01H 71/1081 (2013.01); H01H 71/40 (2013.01); H01H 71/446 (2013.01)
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IE IT LI LU NL PT SE
DOCDB simple family (publication)
EP 0550927 A1 19930714; EP 0550927 B1 19980415; AT E165186 T1 19980515; DE 69225127 D1 19980520; DE 69225127 T2 19981112; DK 0550927 T3 19980511; ES 2117652 T3 19980816; HK 1008449 A1 19990507; NL 9102057 A 19930701
DOCDB simple family (application)
EP 92203845 A 19921209; AT 92203845 T 19921209; DE 69225127 T 19921209; DK 92203845 T 19921209; ES 92203845 T 19921209; HK 98109291 A 19980720; NL 9102057 A 19911210