公开(公告)号：US20250104952A1

公开(公告)日：2025-03-27

申请号：US18727790

申请日：2023-01-02

Applicant: LS ELECTRIC CO., LTD.

Inventor： Younghwan KIM ,  Kihwan OH ,  Insu SEO ,  Kyunghwan OH ,  Jihyoung KIM ,  Jaesung LEE

IPC: H01H73/18

Abstract: The present disclosure relates to an arc extinguishing unit of a molded case circuit breaker and, more specifically to an arc extinguishing unit of a molded case circuit breaker, having improved arc elongation performance. The arc extinguishing unit of a molded case circuit breaker, according to one embodiment of the present disclosure, comprises: a first side plate and a second side plate arranged to be spaced a predetermined distance apart from each other; a plurality of grids arranged by predetermined intervals between the first side plate and the second side plate; and an insulation member arranged to adjoin each of the plurality of grids.