Adjustable Voltage Relay Over And Under Voltage Protector Over Current Limit Overvoltage Protection Devices 220V 63A 40A Functions: 1.Over-voltage protection 2.Under-voltage protection 3.Over-current protection 4.Automatic recovery5.Voltage display(voltage measurement) 6.Current display (current measurement) 7.Installation:35mm DIN rail Technical data: 1.Rated supply voltage:AC 220V 2.Operation volatge:AC 80-400V(single phase) 3.Rated frequency:50/60HZ 4.Electric current (>A) setting range:1-40/63A 5.Overvoltage (>U)setting range:230-300V 6.Undervoltage (<U) setting range:210-140V 7.Rated current:40/63A(subject to product label) 8.>U and <U trip delay time:0.1-30 9.Reset /start delay time:1-500 10.Voltage measurement accuracy:2%(not exceeding 2% of the overall range) 11.Rated insulation voltage:400V 12.Max.Loading power:1-40A Adjustable(default:40A) 1-63A Adjustable(default:63A) 13.Over-voltage protection value range:230V~300~OFF(default:270V) 14.Over-voltage recovery voltage range:225V--295V(default:265V) 15.Over-voltage protection action time:0.1s-30s(default value:1s) 16.Over-voltage recovery delay time:1s-500s(default:30s) 17.Under-voltage protection value range:210V--140V(default:170V) 18.Under-voltage recovery voltage range:215V--145V(default:175V) 19.Under-voltage protection action time:0.1s-30s(default:1s) 20.Under-voltage recovery delay time:1s-500s(default:30s) 21.Over-current recovery delay time:1-500s(default:30s) 22.Output contact:1NO 23.Electrical life:100000 24.Mechanical life:1000000 25.Protection degree:IP20 26.Pollution degree:3 27.Operating temperature:-50-55 28.Humidity:50% at 40 without condensation 29.Storage temperature:-30-70 Here are the pictures of 63A showing Here are the pictures of 40A showing