GW4-12 Model outdoor Ac HV Disconnect Switch (Disconnect Switch for short hereunder) is used for opening or closing circuits under the voltage but no-load condition in 50Hz, 12Kv power system. This series disconnect switch strictly accords with standards: GB1985-89>, IEC129-1984> and IEC694-1980. Technical Specification/Parameter Rated voltage: 12/40. 5KA Rated current: 200A-1250A Rated peak withstand current: 40-80KA 4S Short-time withstand current: 16-31. 5KA