Which type of electrical circuit typically requires the installation of a current limiter?

The installation of a current limiter is most commonly required in heavy power circuits due to their nature and the demands they place on the electrical system. Heavy power circuits handle large amounts of electrical current, often operating in high-power applications, such as those found in aircraft propulsion systems and other major components.

In these circuits, the risk of excessive current flow can lead to overheating, equipment damage, or even fire hazards. A current limiter serves the purpose of protecting the circuit by restricting the amount of current that can pass through, thereby preventing these potentially hazardous situations. This protective measure is essential for ensuring the safety and reliability of the electrical system in high-load environments.

While other circuit types may have their own protection mechanisms, such as fuses or breakers, they typically do not face the same level of risk associated with high currents and do not necessarily require current limiters to the same extent as heavy power circuits. For example, low-voltage circuits and control circuits usually carry smaller currents that are less likely to cause overheating and do not require such stringent current limiting as seen in heavy power systems.