CJX1(3TB,3TF)series AC contactors are suitable for electrical system with AC 50/60Hz, rated operational voltage up to 660V. In AC-3 usage, rated operational voltage up to 380V, rated operational current up to 9-630A, it is mainly used to make or break remote motors or system. They from electromagnetic starters with suitable thermaloverload relays JRS2(3UA5) series to protect system and motorsagainst overload or phase-failure. They are made according to IEC standard.