Industrial frequency voltage 4KV Insulation voltage 1500V Rated voltage 1140V 1140 V molded case switchNNKK - 1140 type air switch, is suitable for ... use in ac 50 hz, voltage 1140 v, current to 125 a, 200 a, 315 a, 400 ... , etc.), have certain breaking capacity.Main technical parameters:1 rated voltage Ue 1140 vRated working current Ie 125 a 200 a ...