PURPOSE: A potential and current transformer for a cubicle type SF6 gas insulating switch is provided to easily connect an indoor SF6 gas insulating switch, reduce size and weight to a half existing potential and current transformer, and enhance facility in managing, repairing and installing, and stability. CONSTITUTION: A case of a potential and current transformer is installed on an upper part of a frame(51) of a power output part(C). A switch main circuit part(4) is installed on an upper side inside the case. The switch main circuit part(4) is connected to an input end of another line. A phase fuse(6) is positioned on a lower side of the switch main circuit part(4) to protect a current transformer(7) and a potential transformer(8). An external cover(6-1) of the fuse(6) is a sealing type wherein a fuse is replaceable without discharging an insulation gas. An entrance of the fuse external cover(6-1) is installed in a direction of a front surface of the inside of the case. A bus bar(5) is connected to the each phase between the switch main circuit part(4) and the fuse external cover(6-1).
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