Double Power Automatic Transfer Switch 4P Photovoltaic to Mains DIN Rail Mount Electrical Selector Switch 63A Item Type: Double Power Automatic Transfer Switch (Solar Power to Grid Power) Model: LTB1-63/4P Material: PC Flame Retardant, Silver Rated Current: 63A Insulation Voltage: AC690V Voltage Withstand: Uimp: 8KV Frequency: 50, 60HZ Grade: PC Grade (Can be opened under load without generating short circuit current) Specification: 4P Rated Short Circuit Current: 50kA Rated Short Circuit Current (Fuse): RT16-00-63A Rated Impulse Withstand Voltage: 8kV Rated Control Voltage: 220VAC 85%Us-110%Us Life: Electrical: ≥1500 Times, Mechanical: ≥5000 Times Touch Time: <50ms Operating Transition Time: <50ms Return Time: <50ms Closing Time: <50ms