Cartridge Fuses

Cartridge fuses are a low cost electrical safety device that is used to protect electrical circuits and appliances. They are cylindrical in shape and have a contact point at each end. Cartridge fuses are typically constructed from ceramic, glass or porcelain.

How do cartridge fuses work?

Cartridge fuses contain a piece of wire that melts when too much current flows through the circuit. When the wire melts, it breaks the circuit which prevents any damage. This is often referred to as burning out or blowing out. Put simply, when a fuse blows, the circuit is broken. Once a fuse has blown, it will need replacing in order to make the circuit complete again, and allow the flow of current.

Different types of cartridge fuse

Most cartridge fuses are general purpose and feature no time delay, however, some heavy duty options will have a time delay features that enables motors to start up.

Why use cartridge fuses?

Cartridge fuses are a relatively cheap way of protecting electrical equipment from short circuits and overcurrent. They are incredibly safe as they do not produce flames, arcs or gas when they burn out and break the circuit. Their speed of operation is also incredibly quick, as they react almost instantly.

What cartridge fuse should you choose?

Cartridge fuses are available in a range of standard current rating variants. When choosing the correct fuse for your application, you should choose a fuse with a nominally higher current rating than the device that it is being used in. This means that if there is a slight, harmless power increase, the fuse will not blow.


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Description Price Current Rating Fuse Size Fuse Speed Voltage Rating Overall Length Diameter Body Material Application Category UL Class Fuse Standard Series
RS Stock No. 563-633
BrandRS PRO
$0.246
Each (In a Pack of 10)
units
500 mA 5 x 20mm T 250 V ac - - Glass - - - -
RS Stock No. 541-3108
BrandRS PRO
$0.416
Each (In a Pack of 10)
units
5 A 5 x 20mm F 250 V ac - - Glass - - - 217
RS Stock No. 736-1416
Mfr. Part No.70-172-40/0.5A
BrandSIBA
$8.61
Each
units
500 mA 6.3 x 32mm FF 1 kV ac, 1 kV dc - - Ceramic - - - GZ
RS Stock No. 414-061
BrandRS PRO
$1.664
Each (In a Pack of 10)
units
10 A 6.3 x 32mm T 500 V ac - - Ceramic - UL 248-13 - -
RS Stock No. 563-425
BrandRS PRO
$0.246
Each (In a Pack of 10)
units
6.3 A 5 x 20mm T 250 V ac - - Glass - - - -
RS Stock No. 541-4347
Mfr. Part No.0217.500MXP
BrandLittelfuse
$0.422
Each (In a Pack of 10)
units
500 mA 5 x 20mm F 250 V ac - - Glass - - - 217
RS Stock No. 563-463
BrandRS PRO
$0.223
Each (In a Pack of 10)
units
500 mA 5 x 20mm F 250 V ac - - Glass - - - -
RS Stock No. 852-7405
Mfr. Part No.FWC-32A10F
$65.72
Each
units
32 A 10 x 38mm F 600 V ac - - - - - - FWC
RS Stock No. 667-0346
BrandRS PRO
$10.226
Each (In a Box of 10)
units
80 A 22.2 x 58mm - 415 V ac - - - - - - -
RS Stock No. 412-598
Mfr. Part No.TDC180-10A
$0.844
Each (In a Pack of 10)
units
10 A 6.3 x 25mm F 240 V ac - - Ceramic - - - TDC180
RS Stock No. 169-9368
Mfr. Part No.TDC10-15A
$959.00
1 Bag of 1000
Bag(s)
15 A 6.3 x 32mm F 32 V ac - - Glass - - - TDC10
RS Stock No. 412-330
Mfr. Part No.TDC10-15A
$0.99
Each (In a Pack of 10)
units
15 A 6.3 x 32mm F 32 V ac - - Glass - - - TDC10
RS Stock No. 563-706
BrandRS PRO
$0.331
Each (In a Pack of 10)
units
6.3 A 5 x 20mm F 250 V ac - - Glass - - - -
RS Stock No. 563-621
BrandRS PRO
$0.233
Each (In a Pack of 10)
units
3.15 A 5 x 20mm T 250 V ac - - Glass - - - -
RS Stock No. 541-4599
Mfr. Part No.0218015.MXP
BrandLittelfuse
$1.11
Each (In a Pack of 10)
units
15 A 5 x 20mm T 250 V ac - - Glass - - - 218
RS Stock No. 169-9433
$294.00
1 Bag of 1000
Bag(s)
4 A 5 x 20mm F 250 V ac - - Glass - - - -
RS Stock No. 537-1521
$0.504
Each (In a Pack of 10)
units
4 A 5 x 20mm F 250 V ac - - Glass - - - -
RS Stock No. 541-2931
Mfr. Part No.0213001.MXP
BrandLittelfuse
$0.872
Each (In a Pack of 10)
units
1 A 5 x 20mm T 250 V ac - - Glass - - - 213
RS Stock No. 563-558
BrandRS PRO
$0.233
Each (In a Pack of 10)
units
1 A 5 x 20mm T 250 V ac - - Glass - - - -
RS Stock No. 314-4822
Mfr. Part No.50-179-06/20A
BrandSIBA
$17.78
Each (In a Pack of 5)
units
20 A 10 x 38mm - 700 V ac - - Ceramic GR - - URZ
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This glass cartridge fuse is ideal for providing ...
Description:
This glass cartridge fuse is ideal for providing protection to devices or internal circuits They are deliberately weaker components which, when too much current is drawn, will blow. Features:Glass cartridge5 x 20 mm cartridge sizeT Speed Rating Anti-surge Low Breaking ...