... /60Hz, rated insulation voltage up to 690-1000V, CJX7 (3RT) Series AC contactors are suitable for frequency of 50/60Hz, rated insulation ... rated operational voltage up tu 380V under the utilization category AC-3. They are mainly used for making breaking electric circuits ... distance and for frequent starting stopping and reversing control of AC motos. They comply with IEC947, VDE0660, GB 14048. 3RT ...