Which of the following fuses is used to protect against high inrush currents?

The choice of a dual-element fuse for protecting against high inrush currents is based on its design and functionality. These fuses incorporate two elements: a slow-blow element that allows for brief surges of current—such as those that occur during motor startup or similar situations—while still providing the capability to open quickly under sustained overload conditions.

When equipment starts up, particularly inductive loads like motors, it often draws a significantly higher current than its normal operating level for a short period of time. A dual-element fuse is specifically engineered to handle this by allowing the initial inrush current to pass without interruption, thus preventing unnecessary fuse blowing.

In contrast, other fuse types might either react too slowly or too readily. A standard fuse would not be suitable for handling these inrush currents as it is designed to open at the rated current without consideration for short-duration surges. A slow-blow fuse could also manage inrush to some extent, but may not offer the same level of precision under varying conditions of overload. Fast-acting fuses, on the other hand, would trip almost instantly on high currents, which makes them ineffective in scenarios with significant inrush currents.

Therefore, a dual-element fuse is specifically designed to accommodate high inrush currents