What is a fuse?
A fuse is an electrical component designed to protect electrical circuits by safely opening the circuit under abnormally high current loads. Fuses come in many shapes and sizes, but each one is designed to protect a circuit with a specific set of electrical parameters. These parameters are primarily the operating voltage, operating current and fuse element melting time or speed of the fuse.
How does a fuse work?
A fuse contains a metal element which is designed to carry a limited electrical current. When a short circuit or overload occurs, the higher current will generate heat causing the fuse element to melt and create a gap in the fuse element. This gap breaks the current flow through the fuse (and circuit). A fuse must be replaced once it has blown.
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MSRP:Now: £0.50Was:Fuse, Fast Blow, 5mm x 20mm – 250V AC, Range This is a glass ferrule-type fuse. It fits great with our 5mm fuse clips or our inline fuse holders.The fuse is rated for 250VAC, and depending on which version you select, from 0.5A right up to 20A...MSRP:Now: £0.50Was:Qty in Cart: 0Price:MSRP:Now: £0.50Was:Subtotal:
Proto-PICMSRP:Now: £1.75Was:Fuse Holder, Inline Screw Type, 5x20mm AGC, 16AWG Wire These screw fuse holders are extremely useful when you're hooking your project up to a power source and want to add some circuit protection.They take a 5x20mm fuse and come complete with 16AWG wire,...MSRP:Now: £1.75Was:Qty in Cart: 0Quantity:Price:MSRP:Now: £1.75Was:Subtotal:
SparkfunMSRP:Now: £0.50Was:Fuse 5mm - 125V AC, 5A This is a glass ferrule type fuse. It fits great with our 5mm fuse clips. The fuse is rated for 125VAC, up to 5A. Fuses are pretty simple devices. If more than 5A passes through the fuse, the small filament inside the fuse heats up...MSRP:Now: £0.50Was:Qty in Cart: 0Price:MSRP:Now: £0.50Was:Subtotal:
Proto-PICMSRP:Now: £0.60Was:These PTC Fuses are ideal for protecting those projects, where Current draw should not go over 500mA. The fuse will stop the current flow through the circuit if there is a fault and will reset when the fault is resolved.Documents DatasheetMSRP:Now: £0.60Was:Qty in Cart: 0Quantity:Price:MSRP:Now: £0.60Was:Subtotal: