Over Under Voltage Protective Device Adjusting Dual Display Overcurrent Overload Arrester 40A 240V‑300V Item Type: Voltage Protective Device Material: Flame Retardant PC Current: 1-40A Overvoltage Protection Value Range(uvo): 240V-300V Undervoltage Protection Value Range(uve): 140V-210V Shutdown Delay Time: 2s (can be set 1-300s) Self Recovery Protection Delay Time: 30s (can be set 1-300s) Rated Frequency: 50 or 60Hz Error: 2% Voltage Measurement Accuracy: 1% Rated Insulation Voltage: 400V Output Contact: 1No Electrical Life: 100000 times Mechanical Life 1000000 times Protection Grade: IP20 Altitude: ≤2000m Working Temperature: -50℃-55℃ Humidity: ≤50% at 40℃ (non condensing) Humidity Temperature: -30℃-70℃