Which of the following is a component of a reversing magnetic motor starter?

A reversing magnetic motor starter is designed to control the operation of a motor, allowing it to run in both forward and reverse directions. This system requires multiple components to function correctly and safely.

A control relay is used to manage the control circuit, allowing for the activation and deactivation of other components based on input signals. The control relay plays a critical role in initiating motor operations and ensuring that the system responds as intended to various control commands.

A contactor is essential in a motor starter as it serves to connect and disconnect the power supply to the motor. In the case of a reversing starter, two contactors are typically used to switch the connections either for forward or reverse operation of the motor. This allows for efficient control of the motor's direction.

An overload relay is included in the system to provide protection against motor overload conditions. It monitors the current flowing to the motor and disconnects power if it exceeds a safe level, thus protecting the motor from damage due to overheating or excessive draw.

The combination of these components—control relay, contactor, and overload relay—works together to ensure that the motor can be started, stopped, and reversed safely. Without any of these components, the reversing magnetic motor starter would not function effectively or might even pose safety