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. 412-605
Mfr. Part No.TDC180-13A
HK$3.581
Each (In a Pack of 10)
units
13 A 6.3 x 25mm F 240 V ac - - Ceramic - - - TDC180
RS Stock No. 459-7918
Mfr. Part No.DMM-B-44/100
HK$311.47
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
HK$342.71
Each (In a Pack of 5)
units
11 A 10 x 38mm F 1 kV ac - - Melamine - - - DMM-B
RS Stock No. 563-699
BrandRS PRO
HK$2.471
Each (In a Pack of 10)
units
3.15 A 5 x 20mm T 250 V ac - - Ceramic - - - -
RS Stock No. 787-4299
Mfr. Part No.0326012.MXP
BrandLittelfuse
HK$14.03
Each (In a Pack of 5)
units
12 A 6.3 x 32mm T 250 V ac - - Ceramic - - - 326
RS Stock No. 878-3554
Mfr. Part No.0326012.HXP
BrandLittelfuse
HK$11.30
Each (In a Pack of 50)
units
12 A 6.3 x 32mm T 250 V ac - - Ceramic - - - 326
RS Stock No. 878-1463
Mfr. Part No.0FLQ03.2T
BrandLittelfuse
HK$181.58
Each
units
3.2 A 10 x 38mm T 300 V dc, 500 V ac - - Melamine - - - FLQ
RS Stock No. 541-4375
Mfr. Part No.0217001.MXP
BrandLittelfuse
HK$2.234
Each (In a Pack of 10)
units
1 A 5 x 20mm F 250 V ac - - Glass - - - 217
RS Stock No. 878-3794
Mfr. Part No.0217001.HXP
BrandLittelfuse
HK$1.845
Each (In a Pack of 100)
units
1 A 5 x 20mm F 250 V ac - - Glass - - - 217
RS Stock No. 188-6956
Mfr. Part No.D213098
BrandMersen
HK$10.495
Each (In a Pack of 10)
units
2 A 10 x 38mm - 500 V ac - - Ceramic GG - - -
RS Stock No. 876-8290
Mfr. Part No.0217001.VXP
BrandLittelfuse
HK$14.20
Each (In a Pack of 5)
units
1 A 5 x 20mm F 250 V ac - - Glass - - - 217
RS Stock No. 188-6978
Mfr. Part No.K215128
BrandMersen
HK$10.029
Each (In a Pack of 10)
units
6 A 10 x 38mm - 500 V ac - - Ceramic GG - - -
RS Stock No. 541-4684
Mfr. Part No.0215002.MXP
BrandLittelfuse
HK$9.75
Each (In a Pack of 10)
units
2 A 5 x 20mm T 250 V ac - - Ceramic - - - 215
RS Stock No. 412-560
Mfr. Part No.TDC180-3A
HK$3.032
Each (In a Pack of 10)
units
3 A 6.3 x 25mm F 240 V ac - - Ceramic - - - TDC180
RS Stock No. 878-4030
Mfr. Part No.0312003.VXP
BrandLittelfuse
HK$10.87
Each (In a Pack of 5)
units
3 A 6.3 x 32mm F 250 V ac - - Glass - - - 312
RS Stock No. 769-0102
Mfr. Part No.0312003.HXP
BrandLittelfuse
HK$8.41
Each (In a Pack of 10)
units
3 A 6.3 x 32mm F 250 V ac - - Glass - - - 312
RS Stock No. 878-3801
BrandRS PRO
HK$1.898
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
HK$2.234
Each (In a Pack of 10)
units
5 A 5 x 20mm F 250 V ac - - Glass - - - 217
RS Stock No. 412-576
Mfr. Part No.TDC180-5A
HK$9.763
Each (In a Pack of 10)
units
5 A 6.3 x 25mm F 240 V ac - - Ceramic - - - TDC180
RS Stock No. 541-3760
Mfr. Part No.0215.500MXP
BrandLittelfuse
HK$9.58
Each (In a Pack of 10)
units
500 mA 5 x 20mm T 250 V ac - - Ceramic - - - 215
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