Time lag fuses consist of which two main parts?

Time lag fuses are designed to handle brief overloads while preventing damage to circuits. These fuses specifically consist of a thermal cutout and a fuse link.

The thermal cutout is essential for detecting prolonged overcurrent conditions. When such a condition occurs, the thermal element heats up, leading to a delayed response. This allows for temporary surges, such as those caused by motors starting up, to pass without interrupting the circuit.

The fuse link serves as the component that actually melts to break the circuit when current flows exceeds its rated capacity for an extended period. It's designed to clear the circuit quickly once the overload condition persists beyond the time lag provided by the thermal cutout.

In this configuration, the combination of both parts allows the time lag fuse to effectively manage transient overload conditions while providing protection against sustained overcurrent situations. Other options may list components that are not part of the operational mechanism of a time lag fuse, thereby making them unsuitable answers.