Salient Features Widest Range of 3P & 4P from 630A to 6300A Insulation Voltage: 1000V AC Power Voltage: upto 690V & even beyond. Impulse Withstand Voltage (Uimp) : 12 KV Ics & Icu : 100% , From 50 KA to 120 KA at 500V AC Icw Rating: 50 KA for 1 Sec...