A fuse holder is a dedicated device within an electrical system designed to securely house and integrate a fuse into a circuit. Acting as both a protective enclosure and a reliable electrical contact point, fuse holders ensure that current flows cleanly through the fuse link—even under vibration or environmental stress. They also enable simple, safe replacement when a fuse blows due to overcurrent. Depending on the type, features may include modular, DIN‑rail mounting, finger‑safe touch protection (e.g., meeting IP20), blown‑fuse LED indicators, and sealing options for on/off positions—all engineered to uphold safety, accessibility, and durability.