... mode. Low voltage power device-main switch: universal breaker, intelligent breaker and outgoing switch. No flashover plastic switch, automatic ... device, exhaust blower, heating and dew against device in the substation.2. Characteristic: Fastness, heat insulation, ventilation, good performance, ... voltagekV/minPhase-earth and phase-phase: 42/135/12.5/1Across open contacts:48/1lOkV Cable AC withstand ...