GCS devices are suitable for power distribution systems in industries such as power plants, petroleum, chemical, metallurgical, textile, and high-rise buildings. In places with high automation levels such as large power plants and petrochemical systems that require computer interfaces, this low-voltage complete distribution device is used for power distribution, centralized control of electric motors, and reactive power compensation in power generation and supply systems with a three-phase AC frequency of 50 (60) Hz, rated operating voltage of 380V (400V), (660V), and rated current of 4000A or below.