US 12,224,143 B2
Plug-in circuit breaker
Kejun Lu, Zhejiang (CN); and An Yang, Zhejiang (CN)
Assigned to ZHEJIANG CHINT ELECTRICS CO., LTD., (CN)
Appl. No. 17/918,476
Filed by ZHEJIANG CHINT ELECTRICS CO., LTD., Zhejiang (CN)
PCT Filed Dec. 26, 2020, PCT No. PCT/CN2020/139773
§ 371(c)(1), (2) Date Oct. 12, 2022,
PCT Pub. No. WO2021/208493, PCT Pub. Date Oct. 21, 2021.
Claims priority of application No. 202010287394.9 (CN), filed on Apr. 13, 2020.
Prior Publication US 2023/0146221 A1, May 11, 2023
Int. Cl. H01H 71/10 (2006.01); H01H 71/12 (2006.01)
CPC H01H 71/1054 (2013.01) [H01H 71/128 (2013.01); H01H 2300/066 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A plug-in circuit breaker, comprising a circuit breaker housing, and a locking mechanism, an unlocking mechanism, a button mechanism and an operating mechanism all arranged inside said circuit breaker housing; said operating mechanism connected to said button mechanism, said button mechanism is operated to enable the circuit breaker to switch on/switch off by means of said operating mechanism; wherein
said locking mechanism includes a first locking member with one end protruding outside said circuit breaker housing, and said circuit breaker housing includes a locking member opening co-operated with said first locking member,
said unlocking mechanism includes a pulling member independent from said button mechanism and drivingly co-operated with said first locking member, when the circuit breaker is in a switch-off state, one end of said first locking member protrudes outside said circuit breaker housing from said locking member opening, and pulling said pulling member enables said first locking member to retract into the inside of said circuit breaker housing, wherein said circuit breaker housing is shaped as a hexahedral structure entirely, including a front side wall and a rear side wall arranged oppositely, wire-outlet holes, button holes and a pulling member operating hole all arranged on said front side wall, and wire-inlet holes arranged on said rear side wall.