GCK Series Motor Control Center and GCL Series Distribution Center consist of some separate function units. The function units are installed in separate metal cabinet, when any unit is wrong, the wrong unit will be cut off, other unit have no affection. All unit can connect with PLC and PC and PC by interface, then it will be a executive unit. These products were confirmed by IEC 4391, GB7251-87, ZBK36001 standard. GGD A-C low-voltage Distribution Cabinet can be used for power transformer, distribution, controlling by power plant, transformer station, factory, mine. It own characters of good cut-off, thermo stability, various electric scheme, creative structure, high protection level and so on. The product was conformed by IEC 439-1, GB7251-87 standard.