Mechanical furnace change switch, suitable for 2-90 ton intermediate frequency induction melting furnace to replace furnace body or power supply cabinet. The traditional furnace change switch is to switch the water-cooled cable by removing the bronze plate. If the connecting bolts are not tightened during assembly, there will be a "sparking" phenomenon when the furnace is opened, which will inevitably damage the thyristor and affect production. Using the mechanical furnace change switch does not require screw tightening, and the furnace body can be quickly changed.