Attributes . ICU 100 KA 220/240 V - AC IEC 947-2-ICU 65 KA 380/415 V - AC IEC 947-2-ICU 65 KA 440/480 V - AC IEC 947-2-ICU 25 KA 500/525 V - AC IEC 947-2- 100 KA 240 V - AC UL 489- 65 KA 480 V - AC UL 489- 25 KA 600 V - AC UL 489 . Names