20mm Fuses & Fuse Kits

Our range of standard 20mm (5x20mm) cartridge fuses and fuse kits provides essential over-current protection for a broad spectrum of electronic equipment, power supplies, and control circuitry. Engineered to safely interrupt electrical faults and prevent component damage, these compact fuses are a vital staple for production, maintenance, and field repair.

Featuring high-reliability components from leading manufacturers, our selection covers a full range of current ratings, blow characteristics, and construction types:

• Glass 20mm Fuses: Clear cartridge design allowing immediate visual inspection of the fuse element. Available in both Quick-Acting (F) for sensitive electronics and Time-Delay / Anti-Surge (T) for circuits with high inrush currents.
• Ceramic 20mm Fuses: High-breaking-capacity fuses designed for higher current surge protection where arc quenching and thermal stability are required.
• Fuse Kits & Assortment Sets: Convenient, compartmentalised storage cases containing popular 5x20mm fuse values, ideal for service engineers, maintenance workshops, and design labs.

All 20mm fuses conform to international safety standards, ensuring reliable tripping characteristics and circuit safety. Browse our complete stock below, available with competitive quantity breaks and fast UK delivery.