Attributes . power circuit 600 V UL 508 || power circuit 690 V IEC 60947-4-1 || signalling circuit 690 V IEC 60947-4-1 || signalling circuit 690 V IEC 60947-5-1 || signalling circuit 600 V UL 508 || power circuit 600 V CSA C22.2 No 14 || signalling circuit 600 V CSA C22.2 No 14 . Names