公开(公告)号：US20240212953A1

公开(公告)日：2024-06-27

申请号：US18286331

申请日：2022-04-22

Applicant: LS ELECTRIC CO., LTD.

Inventor： Han Baek CHUNG

IPC: H01H33/10

CPC classification number: H01H33/10

Abstract: The present disclosure relates to a circuit breaking unit and an air circuit breaker including the same, and provides a circuit breaking unit, including: a fixed contact; a movable contact moved in a direction toward or away from the fixed contact; a fixed contact terminal having the fixed contact disposed at a lower end thereof and extending upward; a low runner disposed extending upward from the fixed contact, one end thereof coupled to the fixed contact terminal, and the other end thereof spaced apart from the fixed contact terminal; and a magnet unit disposed between the low runner and the fixed contact terminal and forming a magnetic field between the fixed contact and the movable contact to guide a path of an arc generated when the fixed contact and the movable contact are separated, to the outside.

公开(公告)号：US20230115892A1

公开(公告)日：2023-04-13

申请号：US17911319

申请日：2021-03-03

Applicant: LS ELECTRIC CO., LTD.

Inventor： Han Baek CHUNG

IPC: H01H33/74 ,  H01H73/18 ,  H01H73/04

Abstract: Disclosed is an air circuit breaker. The air circuit breaker according to an embodiment of the present disclosure includes a CT magnet unit. The CT magnet unit is provided in the air circuit breaker to cover a movable contact point exposed to the outside. A CT magnet is provided inside a case that forms the outer shape of the CT magnet unit. The CT magnet independently forms a sub magnetic field or forms a main magnetic field together with an extinguishing magnet provided in an arc extinguishing unit. Due to the magnetic field formed by the CT magnet, an arc that is generated receives the application of an electromagnetic force directed toward the arc extinguishing unit. Accordingly, the generated arc can be quickly moved and extinguished.

公开(公告)号：US20240186084A1

公开(公告)日：2024-06-06

申请号：US18285921

申请日：2022-04-29

Applicant: LS ELECTRIC CO., LTD.

Inventor： Yong Ik PARK ,  Han Baek CHUNG

IPC: H01H33/18

CPC classification number: H01H33/18

Abstract: Disclosed are a circuit breaking unit and an air circuit breaker including the same. The present disclosure provides a circuit breaking unit, including: a fixed contact; a movable contact that is in contact with or spaced apart from the fixed contact; a fixed contact terminal having the fixed contact disposed at a lower end thereof and extending upward; a movable contact terminal on which the movable contact is disposed and configured such that the movable contact moves in a direction toward the fixed contact or in a direction away from the fixed contact; and a low runner disposed extending upward from the fixed contact, one end thereof coupled to the fixed contact terminal, and the other end thereof spaced apart from the fixed contact terminal, wherein a magnet unit or a U assembly is disposed between the low runner and the fixed contact terminal.

公开(公告)号：US20230317383A1

公开(公告)日：2023-10-05

申请号：US17912777

申请日：2021-03-03

Applicant: LS ELECTRIC CO., LTD.

Inventor： Han Baek CHUNG

IPC: H01H9/44 ,  H01H9/34

CPC classification number: H01H9/443 ,  H01H9/342 ,  H01H73/18

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 on 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; an arc guide having one end coupled to the side member and installed under the plurality of grids; and a magnet which is installed such that both ends are respectively coupled to the side members under the plurality of grids, and forms an electromagnetic force in a direction toward the grid, and a circuit breaker including the same.