PZ30 Terminal Grouping Electric Cabinet is one kind of equipment for installing terminal electric appliance. It can be used for electric appliance controlling (220V or 380V rated Voltage, 100A rated cuttent). It own self-protection function for overloading, short circuit, excess voltage and electric leakage. It suit factory, port, large business center and so on. PZ30 were confirmed by GB10979, GB7251, IEC669, IEC439-1 Standard. DB-600 Series Transformer Auto Protection Switch Cabinet is one kind of three-phase outdoor a-c low voltage electric appliance with public distribution transformer. It can automatically protect transformer for shout circuit, overloading. It is installed on outdoor pole. It specially suit circuit for overloading or lighting stroke. They are confirmed by GB7251-87 Standard.