In summary, fuses are instrumental circuit protection devices designed to serve as overcurrent protectors in a circuit. As the weakest link in a circuit, a fuse is designed to open a circuit to protect against the threats of abnormal overcurrent events. Although fuses come in a wide variety of sizes and form-factors, they all contain the same basic building blocks, which is centered around the fuse element. Electrical characteristics that describe a fuse include voltage rating, current rating, interrupting rating or “breaking capacity,” and I²t. Fuses do exhibit thermal characteristics that require re-rating when used at temperatures other than room temperature.