Gas insulated switchgear includes a plurality of circuit breakers which are arranged in order along a first direction perpendicular to the second direction extends along the first direction, from the one ends of the plurality of circuit breakers first direction and a second direction perpendicular to the third end side startup unit was launched in the direction of the (101 to 109), the third direction from each of the other ends of the plurality of circuit breakers a plurality of connections for connecting the other end startup unit was launched along with the (111 to 119), the other end startup unit (111 to 119) or between one end startup unit (101 to 109) between the includes a bus (3), the. At least one of the plurality of connection busbars (3), two lines connecting bus bars (3) passes between the one end side startup section (101 to 109) other end startup section (111 to 119) (L2, L3) is set.