ARC EXTINGUISHING CHAMBER FOR ELECTRICAL PROTECTION DEVICE AND ELECTRICAL PROTECTION EQUIPMENT COMPRISING SAME Russian patent published in 2018 - IPC H01H33/00 

FIELD: electrical engineering.

SUBSTANCE: present invention relates to arc extinguishing chamber (7) of an electrical protection device, comprising an arc forming chamber comprising fixed contact (4) and movable contact (3), which, when separated, form an arc (a) between them, said arc forming chamber communicating with the input of a second chamber, called an arc extinguishing chamber. Said chamber is characterised in that it comprises a wall, called a balancing wall, substantially continuous at least in its central part, said wall being located downstream of arc extinguishing chamber (9) and is formed and positioned with respect to arc extinguishing chamber (9) so as to slow down the outflow of breakdown gases on the side of arc extinguishing chamber (9) on which the gases pass first, and improve the flow of exhaust gases on the opposite side, the exhaust gases being stopped by the central portion of the wall and exiting through the edges of the wall.

EFFECT: technical result is improved shutdown quality.

10 cl, 10 dwg