AC230V Overvoltage Undervoltage Protector Current Limit Delay Automatic Reset Switch Voltage Protective Device 40A Rated Item Type: Overvoltage Under Voltage Protector Material: PC Rated Power Supply Voltage: AC230V Rated Frequency: 50 60HZ Over Voltage (Over U) Setting Range: 230-300V Undervoltage (Lower Than U) Setting Range: 140-210V Over U And Lower Than U Tripping Delay: 0.1-30S Transmission Delay Time After Power On And Power Off: 1-600S Adjustable Voltage Measurement Accuracy: 2% (No More Than 2% Of The Total Range) Rated Insulation Voltage: 400V Output Contact: 1NO Electrical Life: 10⁵ Mechanical Life: 10⁶ Protection Grade: IP20 Pollution Degree: 3 Altitude: ≤2000m Working Temperature: -50℃-55℃ Humidity: ≤50% At 40℃ (Non Condensing) Storage Temperature: -30℃-70℃ Features 1. Over Voltage Protection 2. Undervoltage Protection 3. Voltage Display (Voltage Measurement) 4. Adjustable Overvoltage Protection Value 5. Adjustable Overvoltage Recovery Value 6. Overvoltage Protection Action Time Adjustable 7. Adjustable Undervoltage Protection Value 8. Adjustable Undervoltage Recovery Value 9. Adjustable Undervoltage Protection Action Time 10. Fault Recovery Delay Time Adjustable 11. Power On Delay Time Adjustable 12. Reset Mode Selection 13. Fault Inquiry 14. Restore Factory Settings