公开(公告)号：US20250141193A1

公开(公告)日：2025-05-01

申请号：US18574834

申请日：2021-12-13

Applicant: LS ELECTRIC CO., LTD.

Inventor： Yong Ik PARK

IPC: H02B1/14

Abstract: The present disclosure relates to a shutter assembly and a switchboard comprising same, and provides a shutter assembly comprising: a shutter plate arranged to cover an outer terminal arranged on the rear surface of a switchboard case; and a shutter driving unit which is connected to one side of the shutter plate and which moves the shutter plate in the left and right directions, wherein the shutter driving unit has at least a portion pressed and rotated by means of a circuit breaker according to the entry of the circuit breaker into the switchboard case, so that the outer terminal covered by the shutter plate is exposed toward the inside of the switchboard, and thus the shutter plate is moved.

公开(公告)号：US20230120215A1

公开(公告)日：2023-04-20

申请号：US17909626

申请日：2021-02-26

Applicant: LS ELECTRIC CO., LTD.

Inventor： Yong Ik PARK

IPC: H01H71/02 ,  H01H33/08 ,  H01H9/34

Abstract: The present disclosure relates to an arc extinguishing assembly including a sealing member and a circuit breaker including same. The sealing member is pressed and elastically deformed between coupling surfaces of the arc extinguishing assembly and the circuit breaker, and accordingly, a gap between the coupling surfaces of the arc extinguishing assembly and the circuit breaker is sealed. Accordingly, when an arc is generated, a temporary pressure increase in the circuit breaker increases and the arc can be smoothly extended.

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：US20240186082A1

公开(公告)日：2024-06-06

申请号：US18284773

申请日：2022-03-24

Applicant: LS ELECTRIC CO., LTD.

Inventor： Kyu Ho LEE ,  Yong Ik PARK

IPC: H01H31/08 ,  H01H31/06

CPC classification number: H01H31/08 ,  H01H31/06

Abstract: An air circuit breaker is disclosed. An air circuit breaker according to one aspect of the present disclosure includes a cradle and a circuit breaker main body drawn-in and drawn-out to/from the cradle; and further includes: an interlock lever connected to an off button of the circuit breaker main body to move vertically; and a transfer device unit provided on the lower side of the cradle, wherein the transfer device unit can include a key interlock assembly, which is provided to be horizontally movable so that, in a state of having moved toward one side thereof, the movement of the interlock lever is restricted and, in a state of having moved toward the other side thereof, the movement of the interlock lever is permitted.

公开(公告)号：US20240047163A1

公开(公告)日：2024-02-08

申请号：US18286308

申请日：2022-04-25

Applicant: LS ELECTRIC CO., LTD.

Inventor： Yong Ik PARK

IPC: H01H73/18 ,  H01H33/664

CPC classification number: H01H73/18 ,  H01H33/664 ,  H01H71/08

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 including the movable contact and configured such that the movable contact is formed to move in a direction toward the fixed contact or in a direction away from the fixed contact; 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 protruding contact disposed extending upward from the movable contact, energized when in contact with the low runner, and spaced apart from the low runner when the movable contact is tripped.

公开(公告)号：US20230119322A1

公开(公告)日：2023-04-20

申请号：US17909639

申请日：2021-02-26

Applicant: LS ELECTRIC CO., LTD.

Inventor： Yong Ik PARK

IPC: H01H33/08

Abstract: The present disclosure relates to an arc extinguishing assembly which, when an arc is generated, has a structure that can push the generated arc in a direction farther away from a stationary contact point by forming a transient pressure difference between arc guides.