Arc extinguish chamber and circuit breaker

• Main Authors: LI SIJIN, WU ZHIWEI, WANG XICHENG, HAN CHANG, SHI XUEFENG, SONG ZHIWEN
• Format: Patent
• Language: Chinese; English
• Published: 17.11.2023
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC SWITCHES; ELECTRICITY; EMERGENCY PROTECTIVE DEVICES; RELAYS; SELECTORS

The invention discloses an arc extinguish chamber and a circuit breaker, and relates to the technical field of low-voltage electrical appliances, the arc extinguish chamber comprises a grid sheet assembly, two mounting plates and two flash barriers, the grid sheet assembly comprises a plurality of grid sheets, and the arrangement direction of the plurality of grid sheets is matched with an arc track; the two mounting plates and the grid plate assembly are matched to form an arc extinguishing cavity; the two flash barriers are respectively arranged on two opposite inner walls of the arc extinguishing cavity, the two flash barriers are matched to form a narrow arc channel, and a moving contact of the moving contact can strike an arc in the narrow arc channel; a first arc striking point is arranged at the bottom of the grid piece assembly, a second arc striking point is arranged at the top of the grid piece assembly, at least one third arc striking point is arranged in the middle of the grid piece assembly, and