Eaton 500mA T Glass Cartridge Fuse, 5 x 20mm

This range of glass cartridge fuses from Eaton Bussmann is ideal for providing protection to devices or internal circuits from short circuits and overcurrent. They are deliberately weaker components which, when too much current is drawn, will blow. Once the fuse has blown it will need replacing in order to make the circuit complete and allow the flow of current.

Why choose a glass cartridge fuse?

Glass and ceramic fuses have similar properties. However, you may choose a glass cartridge fuse as it enables you to see the inside of the fuse. Therefore it is easier to determine whether the fuse has blown.

What size is it?

5 mm x 20 mm is a standard cartridge size and it measures approximately 20 mm long by 5 mm in diameter. They are popular in board and panel protection and will fit a compatible 5 x 20 mm fuse holder.

What voltage is it?

These cartridge fuses are available with 40mA to 15 Amp current ratings for applications where the system voltage rating is 250 Volts AC.

What Speed is it?

This particular cartridge fuse is “T” speed rated which means it is a slow-acting fuse, sometimes referred to as anti-surge. It is able to tolerate higher levels for a short period, without shorting. Therefore, if a sudden change occurs, this fuse will not blow immediately. They are suitable for applications where a sudden flow of high current is required.

What is Breaking Capacity?

Breaking capacity is the level of current that the fuse can safely handle without exploding or rupturing. The breaking capacity of your fuse should be greater than the fault current of your electronic circuit. This particular cartridge fuse is LBC (Low Breaking Capacity).

What are cartridge fuses used for?

• For the protection of components and equipment from costly damage used by over-current
• To isolate sub-systems from the main system once a fault has appeared

Stop electrical damage to your circuits or machinery with this Eaton fuse. This 500mA device will protect electronic devices from the hazards of overcurrent and short circuit faults.
In both cases, an unusually high current can create excessive heat leading to melting, arcing or even flames. This fuse will blow to prevent these conditions from occurring for long enough to damage your electrical components. This T speed fuse is slow-acting, so it's suitable for circuits that commonly experience temporary inrush currents.

• Optional axial leads are available for direct soldering to PCBs (printed circuit boards)
• The fuse's glass body means you can see it when it has blown
• Measures 5 (diameter) x 20mm (length) for compatibility with universal-size fuse holders

The normal operating current of a fuse is typically set at 25% lower than its stated amp rating. Fuses are tested at this current at +25ºC to ensure they can avoid nuisance blowing. This means, for example, that a fuse with a max current rating of 10A may have a normal operating current of around 7.5A at an ambient temperature of +25ºC.

Eaton formerly known as Bussmann

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