Single pahse watt-hour meter: There are three kinds of covers, aluminum cover, plastic cover and glass cover. 1)Rated Voltage:220,230,240V 2)Accuracy:Class 2.0 3)Rated current: 3(6)A,5(10)A,10(20)A,20(40)A,30(60)A,40(80)A,5(20)A,10(40)A,15(60)A,20(80)A,10(30)A,20(60)A