公开(公告)号：US07064944B2

公开(公告)日：2006-06-20

申请号：US10410785

申请日：2003-04-08

申请人： Cheon Yeon Kim ,  Dong Sub Kim

发明人： Cheon Yeon Kim ,  Dong Sub Kim

IPC分类号： H02H9/08

CPC分类号： H02H3/093 ,  H02H1/0015

摘要： A circuit breaker for detecting overload is disclosed. The circuit breaker detects an overload condition electrically without using bimetal. The circuit breaker for detecting overload includes an arc fault detector and a discharge controller. If arc fault occurs, the discharge controller discharges voltage charged in a capacitor. Therefore, the circuit breaker does not trip the circuit when arc fault occurs although high current flows on a conductor. Further, the circuit breaker for detecting overload includes a charging time constant controller so that charging time is varied according to current flowing on the conductor.