公开(公告)号：EP2835811A4

公开(公告)日：2015-12-16

申请号：EP13771948

申请日：2013-03-27

申请人： HITACHI LTD

发明人： URAI HAJIME ,  AOYAMA YASUAKI ,  HASHIMOTO HIROAKI ,  SHIRAISHI KATSUHIKO ,  KATO TATSURO ,  MORITA AYUMU ,  ROKUNOHE TOSHIAKI ,  OSHITA YOICHI

IPC分类号： H02B13/02 ,  H01H33/36

CPC分类号： H01H71/321 ,  H01H33/36 ,  H01H33/40 ,  H01H71/025 ,  H01H71/128 ,  H01H2003/268 ,  H02K16/00 ,  H02K41/031

公开(公告)号：EP2835810A4

公开(公告)日：2015-12-30

申请号：EP13771855

申请日：2013-03-27

申请人： HITACHI LTD

发明人： URAI HAJIME ,  AOYAMA YASUAKI ,  HASHIMOTO HIROAKI ,  SHIRAISHI KATSUHIKO ,  KATO TATSURO ,  MORITA AYUMU ,  ROKUNOHE TOSHIAKI ,  OSHITA YOICHI

IPC分类号： H01H33/38 ,  H01H33/59

CPC分类号： H01H47/223 ,  H01H33/36 ,  H01H33/38 ,  H01H33/59 ,  H01H50/14 ,  H01H50/54 ,  H01H2003/268 ,  H01H2223/002

摘要： The invention is intended to provide a circuit breaker or a circuit breaker operating method enabling a current interruption action to be performed efficiently. A circuit breaker is characterized in that includes a fixed contact and a movable contact that comes in and goes out of contact with the fixed contact; a main circuit conductor that is electrically connected to the fixed contact and the movable contact; an operating mechanism including a mover configured by concatenating permanent magnets or magnetic materials alternately having opposite N and S magnetic polarities along the direction of motion axis of the movable contact and magnetic poles disposed to face the N and S magnetic polarities of the mover and wound with windings; a current detector that detects a current flowing through the main circuit conductor; and a control device that varies the amount of a current to be supplied to the windings of the magnetic poles, depending on a current value detected by the current detector.