Vacuum electromagnetic starter control circuit for automatic drainage of underground sump

The utility model discloses a vacuum electromagnetic starter control circuit used for automatic drainage of an underground sump. The vacuum electromagnetic starter control circuit comprises an isolation change-over switch QS, a first fuse F1, a motor comprehensive protection device K2, a resistance-capacitance overvoltage absorption device RC and an execution loop. The execution loop comprises a control transformer T, a vacuum contactor K1, an intermediate relay K3, a far and near control toggle switch K, a liquid level relay KJ and a liquid level sensor; the drainage pump motor is connected with an alternating current power grid through the motor comprehensive protection device K2, a normally open contact of the vacuum contactor K1 and the isolation change-over switch QS; according to the vacuum electromagnetic starter provided by the utility model, the liquid level relay and the liquid level sensor are added; a control circuit is simple, automatic control can be achieved through the liquid level sensor acco