A reversing motor starter has four contactors and two control coils.

Reversing Motor Starter

A device that allows the control of an electric motor's direction of rotation, enabling it to run both forward and backward.

Contactors

Electromechanical switches used in electrical circuits to control the flow of power to devices, typically operated by an electromagnetic coil.

Control Coils

Electromagnetic coils used within devices like relays and contactors to control the opening and closing of circuits.