GCS Switch Cabinet can be used in electric power system (50HZ, 60HZ, 660V rated Voltage, 4000A rated current). It can be used for power, distribution, light, motor control center, capacity compensation for low-voltage distribution system by power plant, distribution transformer station, mine, factory and so on. It can satisy the needs of PC, PLC controlling. This system, which consist of extraction function unit, own good cut-off, thermo stability, various electric scheme, creative structure, high protection level and so on. It is one kind of ideal product instead of imported products. This product was confirmed by IEC439-1, GB7251-87, ZBK36001 standard.