Forward and reverse connection of a motor refers to the method of controlling its direction of rotation. In the case of a three-phase induction motor, the forward connection is achieved by supplying the motor with the normal phase sequence (L1-L2-L3), which makes the motor rotate in its default direction. To reverse the rotation, any two of the supply lines are interchanged, which changes the phase sequence and causes the motor to spin in the opposite direction. This process is commonly implemented using a forward and reverse starter, which employs two contactors—one for forward and one for reverse operation—along with electrical or mechanical interlocking to prevent both contactors from being energized simultaneously, thereby avoiding short circuits.

In both AC and DC motors, forward and reverse connections are essential in applications where bidirectional motion is required, such as conveyors, elevators, cranes, and machine tools. However, safety precautions must always be observed, including the use of overload protection and proper interlocking systems, to prevent damage to the motor or electrical hazards during operation.