Over Under Voltage Protector Adjustable Self Resetting Intelligent Voltage Protective Device AC220V 40A Item Type: Over Under Voltage Protector Material: PC Rated Power Supply Voltage: AC220V Operating Voltage Range: AC80V-400V (single item) Rated Frequency: 50/60Hz Overvoltage (> U) Setting Range: 230-300V Undervoltage (< U) Setting Range: 210-140V kWh Protection Value: 1-9999 > U And < U Trip Delay: 0.5S Reset or Startup Delay: 1-600S Voltage Measurement Accuracy: 2% (not more than 2% of the total range) Rated Insulation Voltage: 400V Output Contact: 1NO Electrical Life: 100000 Mechanical Life: 1000000 Protection Level: IP20 Pollution Level: 3 Altitude: ≤2000m Operating Temperature: -50℃-55℃ Humidity: ≤50% at 40℃ (no condensation) Storage Temperature: -30℃-70℃ Product Features: 1. Overvoltage protection 2. Undervoltage protection 3. Voltage display (voltage measurement) 4. Adjustable overvoltage protection value 5. Adjustable overvoltage recovery value 6. Adjustable overvoltage protection operation time 7. Adjustable undervoltage protection value 8. Adjustable undervoltage recovery value 9. Adjustable undervoltage protection operation time 10. Adjustable fault recovery delay time 11. Adjustable power-on delay time 12. Reset mode selection 13. Fault query function 14. Factory settings restoration