A 2.5A slow-blow fuse is an electrical safety device designed to protect circuits and electrical equipment from overcurrent’s. Unlike fast-blow fuses that respond immediately to overcurrent’s, slow-blow fuses have a delayed reaction, allowing them to tolerate temporary surges in current while still protecting the circuit from sustained overloads.

Slow-blow fuses consist of a fuse element made of a conductor, typically a wire or a thin strip, enclosed in a ceramic or glass tube. The conductor is the part that will melt or break when exposed to excessive current. They are often used in applications where brief current spikes are common, providing a balance between protection and operational tolerance.

Slow-blow fuses are considered an essential component in many electrical systems to prevent damage and ensure safety.