What is one of the main features of current-limiting devices used for Class 2 circuits?

Current-limiting devices used for Class 2 circuits are essential for controlling the flow of power and protecting the circuit from overcurrent conditions. By being sized properly to match the load requirements, these devices ensure that the current stays within predetermined limits, thereby preventing potential damage to equipment and ensuring safety. This characteristic is critical as it allows for the reliable functioning of electrical systems while adhering to regulatory standards for Class 2 circuits, which are designed with lower risk and enhanced safety in mind. It is important that these devices are precisely matched to their intended loads to provide effective protection without allowing excessive current that could lead to overheating or circuit failure. Thus, proper sizing is a fundamental aspect of their functionality in maintaining safe operational conditions.