Question

The melting and clearing time of a current-limiting fuse is usually specified by a _____ curve.

Short answer

Answer

The melting and clearing time of a current-limiting fuse is usually specified by a Time-current curve.

Step-by-step solution

Definition of current-limiting fuse.

A current-limiting fuse limits the very high current and prevents the circuit from being damaged. Current-limiting fuse clears a fault is less than 180 electrical degrees. It clears a fault within a current limiting range over within $\raisebox{1ex}{$\mathbf{1}$}\!\left/ \!\raisebox{-1ex}{$\mathbf{4}$}\right.$cycles.

Determine the melting and clearing time of a current-limiting fuse.

The Voltage rating, continuous current rating, interrupting current rating and time response are the four parameters that determine fuse specifications. The over-current or fault current, which depicts the relationship between time and current, determines the melting and clearing time of a fuse.

Therefore, the melting and clearing time of a current-limiting fuse is usually specified by a Time-current curve.