Control circuit for controlling inching, continuous operation and stopping of motor via single button

The invention discloses a control circuit for controlling inching, continuous operation and stopping of a motor via a single button. The single button is connected with a cathode of a power supply through a coil of a time relay; a normally closed contact of the time relay is serially connected with a coil of an intermediate relay to form a branch which is parallelly connected to two ends of the coil of the time relay; one end of a non-delay transient contact of the time relay is connected with an anode of the power supply; one end of the non-delay transient contact of the time relay is also connected with the cathode of the power supply through a coil of an AC contactor; a normally closed contact of the immediate relay is serially connected with a first normally open contact of the AC contactor, forming a branch which is parallelly connected to two ends of the non-delay transient contact of the time relay; a second normally open contact of the AC contactor is connected between the power supply which is a three-phase power supply and the motor. The control circuit allows the inching, continuous operation and stopping to be easily operated, is convenient to operate and is simple in circuit structure.