Over Under Voltage Protector Self Resetting Protective Device Adjustable Large Size AC220V 40A Item Type: Over Under Voltage Protector Material: PC Rated Frequency: 50/60Hz Overvoltage (> U) Setting Range: 230-300V Undervoltage (< U) Setting Range: 210-140V > U And < U Trip Delay: 0.5S Reset or Startup Delay: 1-600S 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℃Installation Method: 35mm standard guide railProduct Features:  1. Overvoltage protection 2. Undervoltage protection 4. The overvoltage protection value is adjustable 5. The overpressure recovery value is adjustable 6. The operation time of overvoltage protection is adjustable 7. The undervoltage protection value is adjustable 8. The undervoltage recovery value is adjustable 9. The operation time of undervoltage protection is adjustable 10. The fault recovery delay time is adjustable 11. The power on delay time is adjustable 12. Reset mode selection 13. Query faults 14. Restore factory Settings