... voltage up to 230V,and in a line of application class AC-7a with rated working voltage up to 230V and rated ... insulation voltage(V):500(AC-1,AC-7a,AC-7b) rated working voltage(V): 230(AC-1,AC-7a,AC-7b) conventional heating current(A): 20(AC-1,AC ... -7a,AC-7b ...