Automatic Transfer Switch DIN Rail Mounted 3 Phase Adjustable LED Display Under Over Voltage Protector AC220V Item Type: Automatic Transfer Switch Material: Flame Retardant PC Power Terminals: N, L1, L2, L3 Rated Power Supply Voltage: AC 3 x 110V(N-L1, L2, L3L), AC 3 x 220V(N-L1, L2, L3L) Maximum Setting Range: 110-300V (110V), 230-300V (220V) Minimum Setting Range: 80-330V (110V),140-220V (220V) Automatic Reclosing Delay (Ton): 1-600s Return Priority Stage Delay: 1-600s Switch Delay to Reserve Phase: <0.2s Voltage Lag: 5V Overvoltage Trip Delay: 0.1s, ≥350V: 0.02s Undervoltage Trip Delay: 0.1s, ≥350V: 0.02s Voltage Accuracy: <1% Maximum Working Phase Voltage: 350V Rated Working Current: 63A Maximum Working Current: 80A Pollution Level: 3 Altitude: ≤2000m Ambient Temperature: -25℃-+50℃ Relative Humidity: ≤50% at 40℃ (Non Condensing) Wire Size: 0.5mm²-1mm² Installation: 35mm Standard Guide Rail