Quickly-installed switch

The utility model provides a fast-assembly switch, which relates to the technical field of switches and comprises a machine body, interfaces are mounted on the surface of the machine body, a connecting frame is fixedly mounted on the outer side of the machine body, and a connecting plate is inserted into the connecting frame. By arranging the connecting frame, a worker can preassemble the bottom plate at a proper position, and when a machine body needs to be installed subsequently, the machine body only needs to be moved, the connecting plate is inserted into the connecting frame, the U-shaped block can be inserted into the U-shaped groove, the position of the connecting frame is limited, and the connecting frame is prevented from easily moving up and down; the elastic pieces can push the round blocks to be clamped into the round grooves to fix the connecting frame, the connecting frame is prevented from moving easily, the machine body can be installed, meanwhile, when the machine body is disassembled, the ma