Isolating switch for breaking neutral point of dry-type transformer

The utility model discloses an isolating switch for breaking a neutral point of a dry-type transformer, which comprises a shell, a knife switch, a limiting device, an observation port and a protection plate, and is characterized in that a switch cabinet busbar and a transformer neutral point busbar are respectively arranged in the shell, and the ports of the two busbars are bent to be parallel to each other; a first connecting rod is hinged to a port of the transformer busbar, a second connecting rod is hinged to the bottom of the first connecting rod, a third connecting rod is hinged to the other end of the second connecting rod, a knife switch is hinged to the top of the third connecting rod and extends out of the side wall of the shell, and the distance between the first connecting rod and the switch cabinet busbar is adjusted by pulling the knife switch. The neutral point is controlled to be switched on and switched off on the outer wall of the transformer shell, and the maintenance safety is guaranteed.