公开(公告)号：US20190035588A1

公开(公告)日：2019-01-31

申请号：US16007401

申请日：2018-06-13

Applicant: LSIS CO., LTD.

Inventor： Seungpil YANG ,  Sangchul LEE ,  Youngkook KIM ,  Ilhyun KIM

IPC: H01H71/04 ,  H01H71/08 ,  H01H71/56 ,  H01H71/12

CPC classification number: H01H71/04 ,  H01H1/44 ,  H01H21/04 ,  H01H21/50 ,  H01H21/54 ,  H01H71/08 ,  H01H71/12 ,  H01H71/123 ,  H01H71/128 ,  H01H71/56 ,  H01H2071/046

Abstract: A direct-current (DC) air circuit breaker for opening and closing a circuit according to various embodiments includes a circuit unit having a main circuit, a detecting unit having a detection circuit for detecting a fault current in the main circuit, and a circuit operating device configured to allow connection or isolation between the main circuit and the detection circuit.