EP 2806448 A1 20141126 - CIRCUIT BREAKER FOR WIRING
Title (en)
CIRCUIT BREAKER FOR WIRING
Title (de)
SCHUTZSCHALTER FÜR VERDRAHTUNG
Title (fr)
DISJONCTEUR DESTINÉ À UN CÂBLAGE
Publication
Application
Priority
- KR 20120005249 A 20120117
- KR 2012011307 W 20121221
Abstract (en)
A circuit breaker includes a fixable contact unit , a movable contact unit opposing the fixable contact unit, a switch unit actuating the movable contact unit and a trip unit blocking a main circuit through the swtich unit when an abnormal current occurs. The trip unit includes an instant dial and an instant spring, the instant dial including a magnet, an armature opposing the magnet, a temporary adjustment unit, an instant bar actuating the temporary adjustment unit and a cam being in contact with the instant bar and the instant spring connecting one side of the temporary adjustment unit and one side of the armature. The cam includes a plurality of local depressions, each corresponding to an instantaneous value and adjusts a moment arm length between the instant spring and the armature through the plurality of the local depressions. Therefore, the circuit breaker may adjust an instantaneous current as a predetermined percent of a rated current through a simple operation of an instant dial and the instantaneous current being a main circuit blocking current when an abnormal current occurs in a circuit breaker, may adjust a moment arm length between an instant spring and an armature through a plurality of local depressions, each corresponding to instantaneous value of an instant dial and adjusting an instantaneous current where a trip occurs as a wide percent range of a rated current and may detect an abnormal current when an abnormal current occurs in a circuit breaker to automatically actuate a switch and to block a main circuit for main circuit protection.
IPC 8 full level
H01H 73/36 (2006.01); H01H 71/12 (2006.01)
CPC (source: EP KR)
H01H 71/12 (2013.01 - KR); H01H 71/7463 (2013.01 - EP); H01H 73/36 (2013.01 - KR)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 2806448 A1 20141126; EP 2806448 A4 20151014; EP 2806448 B1 20160831; CN 104040674 A 20140910; CN 104040674 B 20160420; KR 101276370 B1 20130618; WO 2013108998 A1 20130725
DOCDB simple family (application)
EP 12865704 A 20121221; CN 201280067127 A 20121221; KR 20120005249 A 20120117; KR 2012011307 W 20121221