High-current isolating switch

The invention discloses a high-current isolating switch. The high-current isolating switch comprises a base frame, a screw rod erected on the base frame, a supporting plate which is arranged on the base frame in a sliding mode and is in screw fit with the screw rod, and moving contacts which are arranged on the supporting plate and comprise hollow circular tubes used for conducting current. The hollow circular tube on the upper side of the base frame and the hollow circular tube on the lower side of the base frame are mutually conducted. Static contacts connected with the moving contacts arecorrespondingly and fixedly arranged on the upper side and the lower side of the base frame. Each static contact comprises a U-shaped plate used for being connected with a moving contact, and the opening of the U-shaped plate correspondingly faces the moving contact. According to the invention, the original two-point contact of the static contacts and the moving contacts is changed into strip linecontact; the contact area