The invention relates to a primary-secondary fused-set column switch. The primary-secondary fused-set column switch comprises a positive terminal, a positive electric rail, a negative terminal, a negative electric rail, a switch column, a primary-side switch column, a switch column terminal, a connection female hole, a primary-side isolation switch, a secondary-side switch column, an insulation net, a fixed terminal, a secondary-side isolation switch, a cooling hole, a cooling box and an arc prevention network surface. During working, installation and application can be performed according todifferent primary- and secondary-side voltage fusion conditions, a thermocouple protection is matched, the column switch is high in applicability and can be recovered to be continuously used after fuse, thermocouple can be automatically recovered, the loss is reduced to minimum, and the cost is reduced; and moreover, with the adoption of aluminum plastic soft package, the column switch is extremely good in conductivity and high in working efficiency.