It is used in circuits with AC 50Hz (or 60Hz), rated working voltage up to 660V, rated working voltage up to 380V under AC-3 usage category, and rated working current up to 95A, for long-distance making and breaking of circuits, and can be used with Appropriate thermal overload contactors form electromagnetic starters to protect circuits where operating overload may occur. The contactors are suitable for frequently starting and controlling AC motors.