Which devices are used for making electrical and mechanical connections in a fuse?

Ferrule end caps or blades are crucial components in fuses as they serve to establish electrical and mechanical connections between the fuse elements and the circuit. These components ensure proper conductivity and secure attachment to the electrical circuit, which is essential for the fuse to function correctly. Ferrules typically have a cylindrical shape that fits into the sockets, allowing for reliable connection points, while blades are used in fuses designed for easy plug-in operation.

In contrast, fasteners, covers, and insulators do not provide the same level of functionality in terms of making the necessary connections within a fuse. Fasteners may secure components in place but do not perform electrical connections, while covers serve primarily for protection and insulators are meant to prevent electrical leakage, rather than to facilitate connections. Thus, ferrule end caps or blades are the primary devices designed specifically for the critical task of ensuring effective electrical and mechanical connections in fuses.