Polarized a.c. contact

The utility model relates to a polarized AC contactor. The utility model is capable to overcome the technical defects of existing AC contactors that contact pull-on or release state are maintained by power consumption, the overall structure is complex, contact bounce is easy to occur between contacts, and so on. The utility model adopts a double-electromagnetic coil, and a permanent-magnet group for maintaining pull-up or release state is arranged at the polarized end of the electromagnetic coil. Such technology is capable to avoid instantaneous contact bounce upon the action of the contact, and arcing and noise due to contact action are avoided; the work is more reliable, stable and silent; besides, the utility model is energy efficient and has a long service life.