There are some fuses that are intended to provide both short circuit protection and overload protection. These fuses are called dual element time delay fuses. They contain two sections (Figure 4 – 2). The ﬁrst contains a fuse link that is designed to open quickly under a large amount of excessive current. This protects the circuit against direct grounds and short circuits. The second section acts more slowly; it contains a solder link that is connected to a spring. The solder is a highly con- trolled alloy designed to melt at a particular temperature. If motor current becomes excessive, the solder will melt and the spring will pull the link apart. The de- sired time delay is achieved because of the time it takes for the solder to melt even under a large amount of current. If motor current returns to normal after starting, the solder will not get hot enough to melt.