US 12,424,399 B2
Air circuit breaker
Kyu Ho Lee, Anyang-si (KR); and Yong Ik Park, Anyang-si (KR)
Assigned to LS ELECTRIC CO., LTD., Anyang-si (KR)
Appl. No. 18/284,773
Filed by LS ELECTRIC CO., LTD., Anyang-si (KR)
PCT Filed Mar. 24, 2022, PCT No. PCT/KR2022/004102
§ 371(c)(1), (2) Date Sep. 28, 2023,
PCT Pub. No. WO2022/211360, PCT Pub. Date Oct. 6, 2022.
Claims priority of application No. 10-2021-0040461 (KR), filed on Mar. 29, 2021; and application No. 10-2022-0002656 (KR), filed on Jan. 7, 2022.
Prior Publication US 2024/0186082 A1, Jun. 6, 2024
Int. Cl. H01H 31/08 (2006.01); H01H 31/06 (2006.01)
CPC H01H 31/08 (2013.01) [H01H 31/06 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An air circuit breaker, comprising:
a cradle and a circuit breaker main body drawn in and drawn out to/from the cradle;
an interlock lever connected to an off button of the circuit breaker main body to move vertically; and
a transfer device unit provided on a lower side of the cradle,
wherein the transfer device unit has a key interlock assembly, which is provided to be horizontally movable so that, in a state of having moved toward a first side thereof, the movement of the interlock lever is restricted and, in a state of having moved toward a second side thereof, the movement of the interlock lever is permitted.