6A 10A 40A 220V Din Rail Self Recovery Adjustable Over Voltage Under Voltage Dual LED Display Voltmeter Relay Voltage Protector Monitor The automatic recovery over voltage and under voltage protective device complies with modular design standards. the circuit boards of products adopt good quality electronic components with reliable performance. when the power situation is unstable. It's protection function will be automatically activated. once the voltage exceeds the limited range of products, it will automatically cut off so as to protect the safely of electrical equipment and persons. The device will re-supply in 1 minute, when the power returns to normal.The green indicator display, when the power is normal supply.The red indicator display, when the power over voltage or under voltage.Product Parameters:1.Model number: SVP-916-6A or SVP-916-10A or SVP-916-40A2.Power supply: AC 230V or 110V 50/60Hz3.Max.Loading power:1~6A or 1~10A or 1~40AAdjustable(default:6A or 10A or 40A)4. Over-voltage protection value range:221V~300~OFF(default:280V) or 130-150V-OFF(default:140V)Over-voltage recovery voltage range:220V--299V(default:250V) or 131-149V(default:135V)Over-voltage protection action time:0.1s~10s(default value:0.1s)5.Under-voltage protection value range:219V--150V-OFF(default:160V) or 100-80V-OFF(default:90V)Under-voltage recovery voltage range:151V--220V(default:180V) or 81-99V(default:95V)Under-voltage protection action time:0.1s~10s(default:0.1s)6.Over-current adjustment range:1-40A default:40AOver-current action range:0.1~512 second default:5.0s7.Recovery delay time:2s~120s(default:60s)8.Power-on delay time:2s~10s(default:2s)9.Power consumption : <2W10.Electric machinery life : 4000 times11.Installation:35mm DIN railNoted: When you first connect the product, you have to wait about 1 minute, after the red light turn off, then the product will work.