3 Phase Transfer Switch DIN Rail Mount Automatic Changeover Switch with Voltage Current Protection AC220V 80A Item Type: 3 Phase Transfer Switch Model: STVP-935S Material: Flame Retardant PC Rated Power Supply Voltage: AC220V Working Voltage: AC80-400V (single phase) Rated Frequency: 50 or 60Hz Rated Current (Ie): 80A Maximum Working Current Imax (within 10 Minutes): 100A Maximum Load Power: 17.6KW Current Setting Range(andgt A): 80A Overvoltage Setting Range(andgt U): 230-300V (default 270V) Undervoltage Setting Range(andlt U): 210-140V (default 170V) Reset Start Delay: 1-30s (default 1s) Voltage Measurement Accuracy: 2 percent (not exceeding 2 percent of the total range) Rated Insulation Voltage: 400V Output Contact: 1NO Electrical Life: 100000 Times Mechanical Life: 1000000 Times Protection Grade: IP20 Pollution Class: 3 Class Altitude: ≤2000m Working Temperature: -50℃-55℃ Humidity: 50 percent at 40℃ (non condensing) Storage Temperature: -30℃-70℃ Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.