The main bus can carry maximum current rating

Main bus maximum rated current: the main bus can carry maximum current rating. Rated short-time withstand current: given by the manufacturer, complete sets of equipment of the circuit in a national standard GB7251.1-2005 test conditions specified in 8.2.3 can safely carry the short-time withstand current rms values. Peak short-time withstand current: the specified test conditions, the manufacturer provides this circuit can successfully withstand the peak current. 4 Protection:  air circuit breaker  to IEC60529-1989 standard provided by the equipment to prevent contact with live parts, as well as invasive alien solids and liquids to enter the level. See detailed   IEC60529 standards.  Voltage stabilizer  method: According to IEC60529-1989 standards for the protection of personal safety, will be divided into several separate switchgear compartments in different ways. Functional unit forms: According to national standards GB7251.1-2005, complete sets of equipment components in the installation.
Between different types of distribution cabinets have very different technical parameters, while imports of basic technical parameters of distribution cabinets are superior to domestic distribution cabinets, but it does not necessarily think import distribution cabinet distribution cabinet better than the domestic .