27.5kV box-type disconnecting switch station is a kind of contact network disconnecting switch suitable for the harsh environmental conditions area; the disconnecting switch body, operating mechanism and measuring and control equipment are integrated in the outdoor type metal-enclosed box. 27.5kV box-type disconnecting switch station is usually installed at the feeder grid or at the contact network substation for the segmentation of the contact network or the electrical isolation of the supply line from the contact network, and is suitable for special scenarios such as high altitude, high seismic fortification intensity, high wind, extreme low temperature, severe freezing, severe fouling, areas with frequent bird activity and inside tunnels.