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Features: 1.Overvoltage protection, undervoltage protection and voltage display (voltage measurement). 2.Overvoltage protection and overvoltage recovery value are both adjustable, overvoltage protection action time is adjustable. 3.Undervoltage protection value and undervoltage recovery value are both adjustable, undervoltage protection action time is adjustable. 4.Fault recovery delay time and power-on delay time-on time are adjustable. 5.Reset mode selection, fault inquiry and factory reset function. Specification: Type:40A/63A(Optional) Rated voltage:230VAC 50/60Hz Rated current:40A, 63A Overvoltage protection value range:221V-300V-OFF adjustable (default 280V) Overvoltage recovery voltage mediation range:220V-299V (default 250V) Overvoltage protection action time:0.1 seconds - 10 seconds (default 0.1 seconds) Undervoltage protection value rang:219V-150V-OFF adjustable (default 160V) Undervoltage recovery voltage mediation range:151V-220V (default 180V) Undervoltage protection action time:0.1 seconds - 10 seconds (default 0.1 seconds) Failure recovery delay time:2 seconds - 512 seconds (default 60 seconds) Power-on delay time:2 seconds - 255 seconds (default 2 seconds) Power consumption:≤2W Electrical mechanical life:≥4000 times Dimensions:81 x 36 x 60mm / 3.19 x 1.42 x 2.36in Installation method:DIN rail Working environment:Temperature -25℃~+40℃ Humidity Setting method: Press and hold ''SET'' for 3 seconds, please set the parameter value to be modified as follows, 'Up Triangular Shape' or 'Down Triangular Shape' key to adjust the set value. Only ''END'' appears, press ''SET'' again, the setting data will be saved and effective. Setup steps: 1. Setting content:Overvoltage protection value Digital tube display:280 Indicator status:Overvoltage indicator flashes Setting instructions:Setting range 221V-300V-OFF (default 280V) 2. Overvoltage recovery value 250 Overvoltage indicator flashes Setting range 220V-299V (default 250V) 3. Overvoltage protection action time 0.1 Overvoltage indicator flashes Setting range 0.1 second - 10 seconds (default 0.1 second) 4. Undervoltage protection value 160 Under voltage indicator flashes Setting range 219V-150V-OFF adjustable (default 160V) 5. Undervoltage recovery value 180 Under voltage indicator flashes Setting range 151V-220V (default 180V) 6. Undervoltage protection action time 0.2 Under voltage indicator flashes Setting range 0.1 second - 10 seconds (default 0.1 second) 7. Failure recovery delay time 60 Overvoltage indicator and undervoltage indicator flash simultaneously Setting range 2 seconds - 512 seconds (default 60 seconds) 8. Power-on delay time 2 Overvoltage indicator and undervoltage indicator flash simultaneously Setting range 2 seconds - 255 seconds (default 2 seconds) 9. Reset mode AU Overvoltage indicator and undervoltage indicator flash simultaneously ''AU'' means the default fault reset mode is auto reset. Press 'Up Triangular Shape' key to set the fault reset mode to ''HA''. HA indicates manual reset. When the manual reset mode HA is set, the protector will not automatically supply power after power-on. The "SET" will close the power supply. When the line voltage fails, the protector will not restore the power even after the line fault is removed. You must manually press the "Settings" button on the protector to restore the protector. 10. Fault inquiry 1UL Overvoltage indicator and undervoltage indicator flash simultaneously The digital tube displays ''1UL'', and the overvoltage indicator and undervoltage indicator flash simultaneously.For example: ''1UL'' means that the last fault is an undervoltage fault, UL means undervoltage, UH means overvoltage, press 'Up Triangular Shape' key to query the last 5 faults, if there is no fault, only ''1'' number is displayed without ''UL'' or "UH". 11. End END Overvoltage indicator and undervoltage indicator flash simultaneously This setup is complete.Press the setting button again, the protector saves the data, exits the setting state and enters the running state, and the digital tube displays the current voltage value. Package List: 1 x Protector Note:M. Voltage indicator status indication: When the voltage is over voltage, the voltage indicator flashes quickly. When the voltage is under voltage, the undervoltage indicator flashes slowly. When the voltage is low, the overvoltage indicator is always on. N. Warranty period mark: During the one-year warranty period of the protector's accumulated power supply, the over-voltage indicator and under-voltage indicator are always on, and the protector is fully energized for one year after the warranty period, over-voltage indicator and under-voltage When the indicator light is in the normal state, it will not light. Only when there is overvoltage or undervoltage, the indicator will flash, ind