ARC EXTINGUISHING STRUCTURE AND DUAL POWER CHANGEOVER SWITCH

The invention relates to an arc extinguishing structure and a dual power changeover switch with the arc extinguishing structure. The arc extinguishing structure includes an arc extinguishing chamber (10) and an arc extinguishing shell 5 (20). The arc extinguishing chamber (10) comprises a plurality of arc extinguishing grids (11) separated from each other and arranged as a first arc extinguishing grid group (A) and a second arc extinguishing grid group (B) that is separated from the first arc extinguishing grid group (A) by an arc extinguishing chamber gap (17). The arc extinguishing shell (20) is used for accommodate the arc extinguishing chamber 10 (10) and provided with an arc jetting opening (26) that is aligned with the arc extinguishing chamber gap (17). The arc extinguishing structure is provided with an arc travelling channel (L) communicated with the arc jetting opening (26) and having a bent structure. Fig. 1 Fig. 2 Fig. 3 Fig. 4