Plateau type indoor vacuum circuit breaker suitable for electrified railway

The utility model discloses a plateau type indoor vacuum circuit breaker suitable for an electrified railway. Main primary elements of an existing vacuum circuit breaker are completely sealed in an air chamber and cannot be maintained regularly, and the repairing time is long. The device comprises a frame, a transmission module, an insulation module, a vacuum arc-extinguishing chamber and an insulation pull rod, wherein the transmission module is arranged at the upper part of the frame; the top of the frame is connected with the insulation module, and the transmission module is connected with the insulation pull rod and the vacuum arc-extinguishing chamber. The high altitude vacuum circuit breaker adopts an air insulation mode to enable the circuit breaker to meet insulation requirements of high altitude conditions, is suitable for high altitude areas with altitude of 4000 meters and below, has the advantages of being reliable in operation and convenient to maintain and repair, and solves the problem that com