Pack of 10 quick‑blow glass fuses, 5 x 20 mm — 12A option What this is Ten quick‑blow glass cartridge fuses, size 5 x 20 mm, designed for overcurrent protection. This listing is for the 12A option. Other available current ratings: 0.1A, 0.2A, 0.5A, 1A, 1.5A, 2A, 2.5A, 3A, 3.15A, 4A, 5A, 6A, 7A, 8A, 10A, 12A, 15A, 20A, 30A. Key features and specifications Size and fit: standard 5 x 20 mm glass body fits common fuse holders and panel mounts. Construction: clear glass body with metal end caps for visible fuse status and reliable contact. Performance: quick‑blow design for fast overcurrent response to protect sensitive components. Quantity: pack of 10 fuses. Why you need these fuses Fast protection: quick‑blow operation interrupts short transients and overcurrent events before they damage components. Easy inspection: transparent glass makes it simple to see a blown fuse without disassembly, speeding troubleshooting. Broad compatibility: standard 5 x 20 mm form factor works with most PCB, inline, and panel fuse holders. Reduce downtime: prompt isolation of faults keeps equipment safer and shortens repair time. Practical benefits Protects circuits and components from harmful overcurrent conditions. Simplifies maintenance with an on‑hand supply of common replacement fuses. Reliable, replaceable protection compatible with many consumer, lab, and automotive applications. Typical applications / use scenarios Replace blown fuses in power supplies, chargers, and consumer electronics to restore safe operation quickly. Protect lab power supplies and prototype or test circuits where sensitive components require fast interruption. Safeguard 12V automotive systems, lighting fixtures, and other compatible equipment against shorts and overloads. Compatibility and installation Use with standard 5 x 20 mm fuse holders, clips, and panel mounts. Confirm correct current rating for your circuit before installation. Quick‑blow type is best for protecting sensitive electronics and situations where fast interruption is required; choose an appropriate rating from the available list. What’s in the box 10 x 5 x 20 mm quick‑blow glass fuses — 12A rating.