公开(公告)号：US12154735B2

公开(公告)日：2024-11-26

申请号：US17911311

申请日：2021-03-03

Applicant: LS ELECTRIC CO., LTD.

Inventor： Il Hyun Kim

IPC: H01H33/18 ,  H01H31/26

Abstract: An arc extinguishing unit and an air circuit breaker comprising same are disclosed. An arc extinguishing unit, according to an embodiment of the present disclosure, comprises an extinguishing magnet unit that forms a magnetic field inside the arc extinguishing unit. Accordingly, a generated arc receives an electromagnetic force in the direction facing the exterior of the air circuit breaker, and thus can be rapidly moved and extinguished. The extinguishing magnet unit is accommodated in a magnet case. The magnet case can seal the extinguishing magnet unit. Therefore, the extinguishing magnet unit is not damaged by the generated arc.

公开(公告)号：US12154737B2

公开(公告)日：2024-11-26

申请号：US17916696

申请日：2021-03-03

Applicant: LS ELECTRIC CO., LTD.

Inventor： Il Hyun Kim

IPC: H01H33/70

Abstract: The present disclosure relates to an arc extinguishing assembly, including side members which are spaced apart by a certain distance and disposed to face each other; an exhaust which is installed at an upper part of the side member; a plurality of grids which are installed between the side members and having both ends fixed to each of the side members; and an arc guide whose one side is coupled to the side member and which is installed at a lower part of the plurality of grids, wherein the arc guide is made of a material having heat resistance, and a circuit breaker including the same.