Which safety feature protects an air conditioning unit from overheating?

The overload protection circuit is a critical safety feature in air conditioning units designed to prevent overheating. When the unit experiences excessive current or heat, the overload protection circuit automatically interrupts the electrical supply to the compressor or motor. This disruption helps to avoid potential damage to the unit and prevents hazardous situations, such as fires or electrical failures, caused by overheating components.

In contrast, a thermostat override typically allows for manual control over temperature settings but does not provide specific safeguards against overheating. A fuse box is important for protecting the electrical system from overloads but is not integrated within the A/C unit itself. Insulation wrap is used to improve energy efficiency by minimizing heat loss or gain, but it does not serve a safety function. Thus, the overload protection circuit is specifically designed for safeguarding the air conditioning unit against overheating, making it the correct choice.