	US 12,278,072 B2
	Circuit breaker
Kejun Lu, Zhejiang (CN); and An Yang, Zhejiang (CN)
Assigned to ZHEJIANG CHINT ELECTRICS CO., LTD., (CN)
Appl. No. 17/918,430
Filed by ZHEJIANG CHINT ELECTRICS CO., LTD., Zhejiang (CN)
PCT Filed Dec. 26, 2020, PCT No. PCT/CN2020/139728 § 371(c)(1), (2) Date Oct. 12, 2022, PCT Pub. No. WO2021/208492, PCT Pub. Date Oct. 21, 2021.
Claims priority of application No. 202010285127.8 (CN), filed on Apr. 13, 2020.
Prior Publication US 2023/0143348 A1, May 11, 2023
Int. Cl. H01H 71/58 (2006.01); H01H 71/02 (2006.01); H01H 71/04 (2006.01); H01H 71/08 (2006.01); H01H 71/70 (2006.01)

CPC H01H 71/58 (2013.01) [H01H 71/02 (2013.01); H01H 71/04 (2013.01); H01H 71/08 (2013.01); H01H 71/70 (2013.01)]

13 Claims

1. A circuit breaker, comprising a circuit breaker housing; and a button mechanism, an operating mechanism connected with said button mechanism, a movable contact connected with said operating mechanism and a static contact co-operated with said movable contact are all arranged in said circuit breaker housing; wherein operating said button mechanism enables the circuit breaker to switch on/switch off by means of said operating mechanism; the circuit breaker further includes an electric mechanism arranged inside said circuit breaker housing, said electric mechanism is drivingly co-operated with said button mechanism or said operating mechanism, said electric mechanism can actuate the circuit breaker to switch on/switch off by means of said operating mechanism, or said electric mechanism can actuate the circuit breaker to switch on/switch off by means of said button mechanism, wherein the circuit breaker further includes a short-circuit protection mechanism and an overload protection mechanism respectively drivingly co-operated with said operating mechanism, arc extinguishing system, a wire-inlet terminal and a wire-outlet terminal, which are arranged in the circuit breaker housing respectively; said wire-outlet terminal and said button mechanism are arranged at one end of said circuit breaker housing, and said wire-inlet terminal is arranged at another end of said circuit breaker housing; said operating mechanism is positioned between said button mechanism and said wire-inlet terminal; said arc extinguishing system and said short-circuit protection mechanism are arranged side by side between said operating mechanism and said wire-inlet terminal; said electric mechanism is positioned between said operating mechanism and said wire-outlet terminal, and said electric mechanism and said wire-outlet terminal are positioned on a same side of said button mechanism; said overload protection mechanism is positioned on one side of said operating mechanism and between said arc extinguishing system and said wire-outlet terminal.