CJX2 series AC contactors are suitable for frequency 50Hz , rated insulation voltage up to 1000V, rated operation curent9~330A under AC~3 duty. It is mainly used for making/breaking electric circuits at a long distance & for frequent starting /stopping & controlling A.C. Motors. It is used in combination with thermal relay to compose a magnetic motor starter, so. The products accords with such standards as IEC60947-4- 1 & GB14048.4.