시리즈 = SENTRON Normal State Configuration = 1NC/1NO Maximum Current = 0.3A The Siemens leading auxiliary switch changeover contacts type HQ (7mm) electronic accessory for 3VA1 and 3VA20 up to 3VA25. It belongs to overvoltage category III and has 690 V rated insulation voltage. It has 4 kV rated impulse withstand voltageIt has 20 ms lead time