To prevent a short-circuit accident damaged by birds by widening a phase-distance between adjacent charging sections without enlarging an occupied space of an atmospheric disconnecting switch.

The phase-distance between the adjacent charging sections is doubled by preparing two fixed insulator peelers (14) wherein fixed side contact sections (12) are arranged on tip sections and three or more of charging sections (20a, 20b, and 20c) arranged in the middle of two fixed insulator peelers and having rotary insulator peelers (18) wherein blades (16) rotating in the horizontal direction are arranged on the tips so as to alternately elongate at upper and lower parts of a mount seat (24) of a mount (22) as a base .