The invention discloses an intelligent control and protection switch, which comprises a casing, a control main board and a relay bottom board. The casing includes connection terminals, indicator lights, digital tube displays and keys; the control main board includes an ARM 32-bit high-speed single-chip microcomputer, a power supply module , signal conditioning module, protection module, drive module, 2-way dry contact output, storage module, human-computer interaction module and communication module; the relay base plate includes a magnetic latching relay and a sampling circuit; the mechanical structure is replaced by an electronic structure, and the switch is closed at the same time The voltage synchronization technology is adopted when the switch is turned off, and the current synchronization technology is adopted when the switch is turned off, which completely eliminates the phenomenon of arcing, thus saving the arc extinguishing device, simplifying the switch structure, greatly reducing the complexity of the equipment, higher integration, and smaller volume. Small and compact, the cost is minimized; using integrated circuit, electronic PCB board technology, SMT automatic placement technology, moisture-proof, high temperature resistance, high reliability, compact space, simple structure.