Check the listing for details. Adjustable Over Voltage & Under Voltage Current Protective Device Relay 40-80A. Condition: New. Listed at 22.51 USD. Functions:1.Over-voltage protection2.Under-voltage protection3.Over-current protection4.Automatic recovery5.Voltage display(voltage measurement)6.Current display (current measurement)7. Voltage calibration: Voltage +-10% adjustable. A138. Restore factory settings: press the down button for more than 12s9.Fault inquiry: Press the UP button from more than 12S Product Parameters: 1.Model number:TOVPD1-60-EC2.Power supply:230VAC 50/60Hz3.Max.Loading power:1~40A Adjustable(default:40A) 1~63A Adjustable(default:63A)4.Over-voltage protection value range:230V~300~OFF(default:270V) Over-voltage recovery voltage range:225V--295V(default:250V) Over-voltage protection action time:0.1s~30s(default value:0.5s)Over-voltage recovery delay time:1s~500s(default:30s)5.Under-voltage protection value range:140V--210V --OFF(default:170V) Under-voltage recovery voltage range:145V--215V (default:190V) Under-voltage protection action time:0.1s~30s(default:0.5s) Under-voltage recovery delay time:1s~500s(default:30s)6.Over-current adjustment range:1-40A (default:20A) 1-63A (default:40A) Over-current action range:0.1~30 second (default:0.5s)Over-currentrecovery delay time:1s~500s(default:30s)7.Power-on delay time:1s~500s(default:10s)9.Power consumption :