Features Safe and flame retardant: the protector is made of flame retardant PC material with surge protection, low voltage protection and voltage display (voltage measurement), and is safer and more reliable to use. Effective protection: a surge protection device can prevent the voltage from becoming unstable due to frequent switching on and off, causing additional damage to electrical appliances to achieve secondary protection. Three displays: current limit protection shows voltage, current, KWH, more intuitive and convenient reading. The self-resetting power protection has the functions of selection of reset mode, error retrieval and factory reset recovery. Intelligent adjustment: multifunctional protection provides safe protection for electrical appliances, manual adjustment of overvoltage, undervoltage and over-current protection values. Delayed power on: the power supply is automatically restored after 1-600 seconds after stabilizing the voltage, which can protect your devices well. Specification: Item Type: Surge Protector Material: PC flame retardant. Rated voltage of power supply: AC220V. Operating voltage range: AC80V-400V (single piece). Rated frequency: 50/60 Hz. Current (>A) Setting Range: 1-63A Overvoltage (> U) adjustment range: AC230-300V. Under voltage (< U) adjustment range: AC210-120V. KWH protection value: 1-9999. Rated current: 63 A. > U and < U release delay: 0.5S Reset or start delay: 1-600S. Voltage measurement accuracy: 1% (no more than 1% of total range) Nominal insulation voltage: 400 V. Output contact: 1NO Electrical life: 100,000. Mechanical life: 1,000,000. Protection level: IP20. Pollution level: 3. Height: ≤2000 metres. Operating temperature: -50℃-55℃. Humidity: ≤50% at 40°C (no condensation). Storage temperature: -30℃-70℃. Product Features: 1. Surge protection 2. Low voltage protection. 3. Voltage display (voltage measurement). 4. The surge protection value is adjustable. 5. The overpressure recovery value is adjustable. 6. The operating time of the surge protector is adjustable. 7. The undervoltage protection value is adjustable. 8. The undervoltage recovery value is adjustable. 9. The operating time of the undervoltage protection is adjustable. 10. The delay time for error recovery is adjustable. 11. The switch-on delay time is adjustable. 12. Reset mode selection 13. Querying errors 14. Restore factory settings Size (L x W x D): approx. 86 x 38 x 68 mm / 3.39 x 1.5 x 2.68 inches. Rail size: approx. 36 mm / 1.42 inches. Package list: 1 x surge protector. Package List 1 x Over Under Voltage Protector