Features SAFE AND FLAME RETARDANT: Protector adopt PC flame retardant material, with overvoltage protection, undervoltage protection and voltage display(voltage measurement), more safe and reliable to use INTELLIGENT ADJUSTMENT: Multi function protector provide safe protection for electrical appliances, manual adjustment of overvoltage, undervoltage, overcurrent protection value EFFECTIVE PROTECTION: Over under voltage protective device can prevent unstable voltage frequent on and off to cause additional damage to electrical appliances, to achieve secondary protection DELAYED POWER ON: The power supply will be restored automatically after 1‑600S after the voltage is stabilized, which can protect your appliances well THREE DISPLAY: Current limit protector display voltage, current, KWH, more intuitive and convenient reading Feature: 1. MULTIPLE FUNCTIONS: The self resetting current protector has the functions of reset mode selection, fault query and factory recovery Specification: Item Type: Over Under Voltage Protector Material: PC flame retardant Rated Power Supply Voltage: AC220V Operating Voltage Range: AC80V-400V (single item) Rated Frequency: 50/60Hz Current (> A) Setting Range: 1-63A Overvoltage (> U) Setting Range: AC230-300V Undervoltage (< U) Setting Range: AC210-120V KWH Protection Value: 1-9999 Rated Current: 63A > U And < U Trip Delay: 0.5S Reset Or Startup Delay: 1-600S Voltage Measurement Accuracy: 1% (not more than 1% of the total range) Rated Insulation Voltage: 400V Output Contact: 1NO Electrical Life: 100000 Mechanical Life: 1000000 Protection Level: IP20 Pollution Level: 3 Altitude: ≤2000meter 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. 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 Size(LxWxT): Approx. 86 x 38 x 68mm / 3.39 x 1.5 x 2.68in Rail Size: Approx. 36mm / 1.42in Package List:1 x Over Under Voltage Protector Package List 1 x Over Under Voltage Protector