The invention discloses arc extinguish chambers of a
high voltage alternating current SF6 pot-type breaker. The invention is characterized in that an arc extinguish chamber
system comprises a shell with the arc extinguish chambers, plum blossom contact systems, fixed contact systems,
capacitor assembling units, air cylinder systems, a
mechanical drive system,
ion capturing systems, compressed airpiston assembling units, intermediate contact assembling units, insulation supporting bars, moving end large shields and fixed end large shields; the arc extinguish chambers are of double-break structure and are symmetrically distributed, with the
mechanical drive system as the center; the middle
mechanical drive system moves along the vertical direction; and vertical movement of the mechanical drive system is transformed to horizontal movement through crankarms and connecting rods in the mechanical drive system to drive the two air cylinder systems of the arc extinguish chambers to move horizontally to switch off and switch on the
switchgear. Through promoting the technology of the integral arc extinguish chamber of the breaker, the arc extinguish chambers have more uniform electrical field, high insulation level, stronger breaking capability and
high current-carrying capability and is
safer to operate.