Reversing Contactor Wiring Diagram

By | January 21, 2023

A reversing contactor is a type of electrical switch that is used to reverse the direction of rotation of an electric motor. It is typically used in applications where the motor needs to be able to run in either direction, such as in conveyor belts or cranes. Reversing contactors are typically controlled by a pushbutton switch or a PLC.

The basic wiring diagram for a reversing contactor is shown below. The contactor has three terminals: L1, L2, and T1-T3. L1 and L2 are the supply voltage terminals, and T1-T3 are the motor terminals. The contactor also has two coils, C1 and C2.

When the pushbutton switch is pressed, it energizes coil C1. This causes the contactor's main contacts to close, connecting L1 and L2 to T1 and T3. This causes the motor to start running in one direction.

When the pushbutton switch is released, coil C1 de-energizes. This causes the contactor's main contacts to open, disconnecting L1 and L2 from T1 and T3. This causes the motor to stop running.

To reverse the direction of rotation of the motor, the pushbutton switch is pressed again. This energizes coil C2. This causes the contactor's main contacts to close, connecting L1 and L2 to T2 and T4. This causes the motor to start running in the opposite direction.

Reversing contactors are a simple and effective way to control the direction of rotation of an electric motor. They are widely used in a variety of applications where the motor needs to be able to run in either direction.


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