What components comprise a magnetic reversing starter?

• A. A Timer and a Relay
• B. A Starter and a Set of Contactors with Interlocking
• C. A Transformer and a Relay
• D. A Single Contactor

Answer: (B)

A magnetic reversing starter accomplishes motor reversal by using two contactors to swap the motor windings, all controlled by a magnetic starter that provides overload protection. The interlocking between the contactors prevents both from closing at the same time, which would create a direct short or damage the windings. So, when you want forward rotation, one contactor energizes and the other remains de-energized; for reverse, the roles switch. This setup—one starter plus a set of interlocked contactors—is what makes reversing possible and safe. The other options don’t provide the required switching of winding connections or the necessary interlock to prevent simultaneous operation of both paths.