Final answer:
A manual motor starter can serve as a disconnect due to its ability to manually break the circuit and protect against overloads and short circuits, adhering to electrical codes.
Step-by-step explanation:
Yes, a manual motor starter can be used as a disconnect in electrical systems. Manual motor starters are devices that combine protection and control functionalities. They are designed to protect motors from overloads and short circuits, and they include a switch that can manually disconnect the motor for maintenance or safety purposes. It is important to ensure that the manual motor starter is rated for the voltage and current of the system and that it is suitable for use as a disconnect according to national and local electrical codes. Installations should always be carried out by qualified personnel.