A current limiter is essentially a slow-blow fuse and is designed to be used in?

A current limiter, functioning similarly to a slow-blow fuse, is primarily designed for heavy power circuits. This is because heavy power circuits often experience inrush currents, which are temporary peaks in current that can be significantly higher than the normal operating current. Slow-blow fuses and current limiters allow these transient surges to pass without interruption while providing protection against sustained overload conditions.

In heavy power circuits, continuous operation at high loads is common, and the risk of an overload can be substantial. By having a device that tolerates initial surges yet limits ongoing current flow, the circuit is safeguarded against potential damage from sustained excessive currents. Options focusing on low voltage, lighting, or signal circuits do not typically experience the same type or magnitude of current surges, making them less relevant for the use of a current limiter.