A control cabinet is an assembly of switchgear, measuring instruments, protective appliances, and auxiliary equipment in a closed or semi closed metal cabinet or screen according to electrical wiring requirements. Its layout should meet the requirements for normal operation of the electric furnace system, facilitate maintenance, and not endanger the safety of personnel and surrounding equipment. During normal operation, the circuit can be connected or disconnected using manual or automatic switches. When there is a malfunction or abnormal operation, use protective appliances to cut off the circuit or sound an alarm. Measuring instruments can display various parameters during operation, adjust certain electrical parameters, and provide prompts or signals for deviations from normal working conditions. Commonly used in various electric furnaces.