... more than 10years 3UA thermal relay is suitable for AC 50/60Hz, voltage up to 660V and current up to 630A ... .0, 25.0 40.0, 32.0 50.0,40.0 57.0, 50.0 63.0, 57.0 70.0, 63 ... 40.0, 32.0 45.0, 40.0 57.0, 50.0 63.03UA6218066055.0 80.0, 63.0 90.0 ... 400.03UA686301000320.0 500.0, 400.0 630.0 3UA-50,52 high quality thermal overload relay