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. 459-7918
Mfr. Part No.DMM-B-44/100
PHP622.394
Each (In a Pack of 5)
units
440 mA 10 x 35mm F 1 kV ac, 1 kV dc - - Melamine - - - DMM-B
RS Stock No. 459-7924
Mfr. Part No.DMM-B-11A
PHP952.814
Each (In a Pack of 5)
units
11 A 10 x 38mm F 1 kV ac - - Melamine - - - DMM-B
RS Stock No. 878-3794
Mfr. Part No.0217001.HXP
BrandLittelfuse
PHP14.90
Each (In a Pack of 100)
units
1 A 5 x 20mm F 250 V ac - - Glass - - - 217
RS Stock No. 541-4375
Mfr. Part No.0217001.MXP
BrandLittelfuse
PHP14.30
Each (In a Pack of 10)
units
1 A 5 x 20mm F 250 V ac - - Glass - - - 217
RS Stock No. 876-8290
Mfr. Part No.0217001.VXP
BrandLittelfuse
PHP122.332
Each (In a Pack of 5)
units
1 A 5 x 20mm F 250 V ac - - Glass - - - 217
RS Stock No. 878-3930
Mfr. Part No.0FLM030.T
BrandLittelfuse
PHP532.85
Each
units
30 A 10 x 38mm T 250 V ac - - - - - - FLM
RS Stock No. 806-8439
Mfr. Part No.ATQR12
BrandMersen
PHP776.009
Each (In a Pack of 10)
units
12 A 10 x 38mm T 600 V ac - - - - - - -
RS Stock No. 563-380
BrandRS PRO
PHP8.093
Each (In a Pack of 10)
units
1 A 5 x 20mm F 250 V ac - - Glass - - - -
RS Stock No. 188-6956
Mfr. Part No.D213098
BrandMersen
PHP50.40
Each (In a Pack of 10)
units
2 A 10 x 38mm - 500 V ac - - Ceramic GG - - -
RS Stock No. 878-3801
BrandRS PRO
PHP11.206
Each (In a Pack of 100)
units
5 A 5 x 20mm F 250 V ac - - Glass - - - 217
RS Stock No. 541-3108
BrandRS PRO
PHP14.30
Each (In a Pack of 10)
units
5 A 5 x 20mm F 250 V ac - - Glass - - - 217
RS Stock No. 314-4844
Mfr. Part No.50-179-06/30A
BrandSIBA
PHP464.578
Each (In a Pack of 5)
units
30 A 10 x 38mm - 700 V ac - - Ceramic GR - - URZ
RS Stock No. 188-6984
Mfr. Part No.S218194
BrandMersen
PHP50.40
Each (In a Pack of 10)
units
10 A 10 x 38mm - 500 V ac - - Ceramic GG - - -
RS Stock No. 412-605
Mfr. Part No.TDC180-13A
PHP24.357
Each (In a Pack of 10)
units
13 A 6.3 x 25mm F 240 V ac - - Ceramic - - - TDC180
RS Stock No. 848-2738
Mfr. Part No.AGC-10-R
PHP49.03
Each
units
10 A 6.3 x 32mm F 250 V ac - - Glass - - - AGC
RS Stock No. 563-700
BrandRS PRO
PHP8.794
Each (In a Pack of 10)
units
8 A 5 x 20mm F 250 V ac - - Glass - - - -
RS Stock No. 563-633
BrandRS PRO
PHP8.482
Each (In a Pack of 10)
units
500 mA 5 x 20mm T 250 V ac - - Glass - - - -
RS Stock No. 541-4741
Mfr. Part No.0215010.MXP
BrandLittelfuse
PHP54.162
Each (In a Pack of 10)
units
10 A 5 x 20mm T 250 V ac - - Ceramic - - - 215
RS Stock No. 878-3977
Mfr. Part No.0215010.HXP
BrandLittelfuse
PHP69.40
Each (In a Pack of 100)
units
10 A 5 x 20mm T 250 V ac - - Ceramic - - - 215
RS Stock No. 414-061
BrandRS PRO
PHP52.45
Each (In a Pack of 10)
units
10 A 6.3 x 32mm T 500 V ac - - Ceramic - UL 248-13 - -
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