EP 0272457 B1 19920115 - MAGNETIC RELEASE FOR A SELECTIVE OPERATING CIRCUIT BREAKER
Title (en)
MAGNETIC RELEASE FOR A SELECTIVE OPERATING CIRCUIT BREAKER
Publication
Application
Priority
CH 520386 A 19861223
Abstract (en)
[origin: US4808952A] There are arranged at a magnetic trigger for a selectively operative switch, a plunger-type armature, a pivotable armature and a tripping device. A plunger of the plunger-type armature acts directly upon a movable contact of a pair of contacts and the plunger-type armature is actuated using a magnetic coil or winding when the current flowing through the magnetic coil at least corresponds to a predetermined threshold current for opening the contacts. A pivotable armature is actuated by the plunger-type armature and redirects the magnetic return flux. The tripping device acts upon a switch lock mechanism and is switched into or out of the magnetic return flux by the plunger-type armature. The degree of overlap between pole shoes of the pivotable armature and of the tripping device is preselectable by an adjusting screw. There is thus realized a current-dependent, selective tripping of the switch lock mechanism.
IPC 1-7
IPC 8 full level
H01H 71/10 (2006.01); H01H 71/34 (2006.01); H01H 71/24 (2006.01); H01H 71/74 (2006.01)
CPC (source: EP US)
H01H 71/1081 (2013.01 - EP US); H01H 71/34 (2013.01 - EP US); H01H 71/2409 (2013.01 - EP US); H01H 71/2454 (2013.01 - EP US); H01H 71/2463 (2013.01 - EP US); H01H 71/7463 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB IT SE
DOCDB simple family (publication)
EP 0272457 A1 19880629; EP 0272457 B1 19920115; CH 672036 A5 19891013; DE 3776115 D1 19920227; FI 86781 B 19920630; FI 86781 C 19921012; FI 875558 A0 19871217; FI 875558 A 19880624; US 4808952 A 19890228
DOCDB simple family (application)
EP 87117118 A 19871120; CH 520386 A 19861223; DE 3776115 T 19871120; FI 875558 A 19871217; US 13283487 A 19871214