AE-CJ20 series AC contactors (hereinafter referred to as contactors) are suitable for circuits with AC 50Hz (or 60Hz), rated voltage up to 660V, and rated current up to 630A. They are used for remote connec tion and disconnection of circuits, and can be combined with appro priate thermal overload relays to protect circuits that may experie nce operational overload.Contact complies with IEC60947-4-1 and GB14048.4 standards.