Cylindrical fuses provide protection to electrical circuits from overcurrent using a fusible element contained within a glass or ceramic tube. The fuse element will heat due to excessive current flowing from a fault or overload. When it melts (or “blows”), it breaks the circuit and stops the current from flowing. The tube, to aid melting, may contain some sort of sand or quenching materials that contain arcing and allow for safe interruption. Cylindrical fuses can be fast-acting and respond quickly to short circuits, or have a delay to accommodate momentary surges. They are suitable for general electronic circuits, appliances, and automotive systems. The design of cylindrical fuses provides a range of values for precise current ratings, high breaking capacity, and a relatively small size suitable for circuit protection.