CJX2-D series AC contactors, hereinafter referred to as contactors, are suitable for AC 50/60HZ, voltage 660V, current 95A circuits, for long-distance connection and breaking of circuits, frequency-sensitive starting, and control of AC motors. Contactors can also be assembled into The building block auxiliary contact group, air extension head, mechanical interlock mechanism and other components form a time-delay contactor, a reversing contactor, a star-delta starter, and can be directly plugged and installed with a thermal relay to form an electromagnetic starter.