The utility model discloses an ac contactor falls control module with anti voltage, including ac contactor coil and the anti electric coil that shakes, ac contactor coil electricity is connected with alternating current power supply, the anti electric coil that shakes is connected with automatic back-up source, the charging terminal connection of automatic back-up source said alternating current power supply, still include the singlechip, the input of singlechip is connected with keeps apart sampling circuit, singlechip power tank, normal analysis and detection circuit and anti electric time adjustment and the display circuit of shaking, it corresponds the connection to keep apart sampling circuit said alternating current power supply, the output end control of singlechip connects the fault protection circuit, the fault protection circuit switches control connection the ac contactor coil with anti electric coil and the corresponding control ac contactor of shaking. The utility model discloses have trouble conversion and anti voltage and fall the function, strengthened control model's reliability, avoid resulting in the electric device's of enterprise non-scheduled outage and enterprise's production to stop work