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公开(公告)号：US20240153728A1
公开(公告)日：2024-05-09
申请号：US18282042
申请日：2022-04-29
Applicant: LS ELECTRIC CO., LTD.
Inventor： Kyu Ho LEE , Il Hyun KIM
Abstract: Disclosed are an arc extinguishing unit, a circuit breaking unit, and an air circuit breaker including the same. The present disclosure provides an arc extinguishing unit, a circuit breaking unit, and an air circuit breaker, including: side plates spaced apart from each other and disposed to face each other; a plurality of grids disposed between the side plates, spaced apart from each other, and coupled to the side plates, respectively; and a grid cover located above the grid and covering the grid, wherein the grid includes a grid leg extending downward to surround from both sides a protruding contact disposed to extend upward from a movable contact; and a first protective part formed to surround at least a portion of the grid leg at a lower portion of the grid leg.
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公开(公告)号：US20230154707A1
公开(公告)日：2023-05-18
申请号：US17916696
申请日：2021-03-03
Applicant: LS ELECTRIC CO., LTD.
Inventor： Il Hyun KIM
IPC: H01H33/70
CPC classification number: H01H33/7069
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.
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公开(公告)号：US20240170239A1
公开(公告)日：2024-05-23
申请号：US18281727
申请日：2022-04-29
Applicant: LS ELECTRIC CO., LTD.
Inventor： Il Hyun KIM
IPC: H01H33/08
CPC classification number: H01H33/08
Abstract: Disclosed are an arc extinguishing unit and an air circuit breaker comprising the same. The present disclosure provides an arc extinguishing unit, including: side plates spaced apart from each other and disposed to face each other; a plurality of grids disposed between the side plates, spaced apart from each other, and coupled to the side plates, respectively; and a grid cover located above the grid and covering the grid, wherein the grid includes a grid leg extending downward from both ends in the width direction so that an induced magnetic field can be formed by an arc generated when a fixed contact and a movable contact are spaced apart.
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公开(公告)号：US20230110171A1
公开(公告)日：2023-04-13
申请号：US17911311
申请日：2021-03-03
Applicant: LS ELECTRIC CO., LTD.
Inventor： Il Hyun KIM
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.
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