What safety feature is important for protecting against electrical overloads in aerial devices?

A load monitor is crucial for protecting aerial devices against electrical overloads because it actively measures the weight and distribution of the load being lifted. This real-time monitoring ensures that the device does not exceed its designed capacity, preventing potential hazards like equipment failure or accidents. By providing continuous feedback on load conditions, the load monitor enables operators to make informed decisions and take immediate action if the limits are approached or exceeded. This feature is essential for maintaining safety during aerial operations, where improper load handling can have severe consequences.

Other options, while they may contribute to safety in different ways, do not specifically address the protection against electrical overloads as effectively as the load monitor does.