5x20mm 10A Glass Fuses — The essential stock to save your equipment and your time
Ever had a device out of action simply because you didn’t have the right fuse to hand? With this 100-pack of 10A 250V 5x20mm glass fuses, that frustration is a thing of the past. Keep a generous supply ready in your workshop, service kit, or at home for whenever you need them.
Note: Fuses are single-use components. Always replace a blown fuse with one of the exact same current and voltage rating.
Why choose this set? (Key Advantages):
- Instant overload cut-off — The precisely calibrated filament breaks the circuit immediately to prevent damage to your equipment.
- Universal 5x20mm size — Designed to fit standard fuse holders in power supplies, voltage stabilisers, transformers, televisions, radios, and many other appliances without the need for modifications.
- Easy visual inspection — The clear glass tube allows you to check if a fuse has blown at a glance, without needing a multimeter.
- Chrome-plated end caps — Resistant to oxidation, ensuring a stable electrical connection even after repeated installation and removal.
- 100-piece pack — A comprehensive supply that will last for years of active technical service or home maintenance.
- Fast-acting (Fast-blow / F) — Provides optimal protection for circuits without high inrush currents, making them perfect for consumer electronics.
Details and Performance
The 5x20mm format is the most common standard in consumer electronics and medium-power electrical equipment — you will find it in almost any device with an accessible fuse holder. The internal filament is calibrated for 10A and reacts rapidly to overcurrents before they can reach sensitive components. The fast-acting (F / Fast-blow) type ensures there is no intentional delay, making these ideal for resistive circuits and linear power supplies where there are no high startup surges that would cause a slow-blow fuse to trip unnecessarily.
| Parameter | Value / Detail |
|---|---|
| Fuse Type | Glass, fast-acting (F) |
| Rated Current | 10A |
| Rated Voltage | 250V AC/DC |
| Dimensions | 5 x 20 mm |
| Body Material | Clear glass tube |
| End Cap Material | Chrome-plated metal (oxidation resistant) |
| Pack Quantity | 100 pieces / set |
| Typical Applications | Power supplies, stabilisers, transformers, TVs, radios, light industrial equipment |
Package Contents
- 100 x 10A 250V Glass Fuse (5x20mm)
Frequently Asked Questions
How do I know if the fuse has blown?
Simply look through the glass tube. If the internal filament is broken or the inside of the glass is blackened, the fuse has blown and must be replaced. No multimeter is required for a primary diagnosis.
Are these fuses fast-acting or slow-blow?
These are fast-acting (Fast-blow / F) fuses, recommended for equipment without high startup current surges, such as linear power supplies, radios, and televisions. If your equipment contains large motors or transformers, check if it requires a slow-blow (T) type instead.
Do they work with DC voltage?
Yes. They are compatible with both alternating current (AC) and direct current (DC) up to a 250V rating.
Can I use a 16A fuse instead of a 10A one if I don’t have the right one?
No. A fuse with a higher amperage will not protect the circuit; it will allow a dangerous amount of current to pass, which could damage your equipment or pose a fire risk. Always use the rated value specified by the device manufacturer.
Are these suitable for industrial use?
Yes, for light industrial applications. The 5x20mm format and 10A/250V rating make them suitable for technical service centres, electronics repair workshops, and medium-power commercial equipment.
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