... and interantional standard It has the world advanced level combined low pressure switch cabinet system, and it is suitable for all electricity ... :* Standard:IEC439,GB7251-1997,JB/T9661-1999* Rated Voltage:380V(660V)* Rated insulation voltage:660V(1000V)*Rated current: 5500A(IP00),4700A(IP30 ... : standard90KA, enhanced 130KA*Degree of protection: IP30,IP40,IP54 : MNS low-voltage switchgear cabinet