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. 167-7178
Mfr. Part No.7030.3120
BrandSchurter
SGD7.07
Each (In a Pack of 5)
units
40 mA 5 x 20mm TT 220 V ac - - Glass - - - D1TD
RS Stock No. 173-9732
Mfr. Part No.7030.3120
BrandSchurter
SGD6.279
Each (In a Box of 10)
units
40 mA 5 x 20mm TT 220 V ac - - Glass - - - D1TD
RS Stock No. 173-7966
Mfr. Part No.0090.0006
BrandSchurter
SGD27.665
Each (In a Box of 10)
units
6 A 10 x 38mm F 1 kV dc - - Melamine - - - ASO 10.3x38
RS Stock No. 712-4768
Mfr. Part No.0090.0006
BrandSchurter
SGD30.43
Each
units
6 A 10 x 38mm F 1 kV dc - - Melamine GPV - - ASO 10.3x38
RS Stock No. 789-7797
Mfr. Part No.0001.2504
BrandSchurter
SGD0.911
Each (In a Bag of 10)
units
1 A 5 x 20mm T 250 V ac, 300 V dc - - Ceramic - - - SPT 5X20
RS Stock No. 865-7758
Mfr. Part No.0034.3872
BrandSchurter
SGD0.753
Each (In a Pack of 10)
units
1 A 5 x 20mm F 250 V ac - - Glass - UL 248-14 - FSK
RS Stock No. 789-7836
Mfr. Part No.0034.1521
BrandSchurter
SGD0.336
Each (In a Bag of 10)
units
3.15 A 5 x 20mm F 250 V ac - - Glass - - - FSF 5x20
RS Stock No. 167-7768
Mfr. Part No.0034.1521
BrandSchurter
SGD0.539
Each (In a Pack of 10)
units
3.15 A 5 x 20mm F 250 V ac - - Glass - - - FSF 5x20
RS Stock No. 789-7842
Mfr. Part No.0034.1526
BrandSchurter
SGD0.631
Each (In a Bag of 10)
units
10 A 5 x 20mm F 250 V ac - - Glass - - - FSF 5x20
RS Stock No. 789-7804
Mfr. Part No.0001.2513
BrandSchurter
SGD0.964
Each (In a Bag of 10)
units
8 A 5 x 20mm T 150 V dc, 250 V ac - - Ceramic - - - SPT 5X20
RS Stock No. 830-4246
Mfr. Part No.8020.5019.G
BrandSchurter
SGD1.304
Each (In a Pack of 10)
units
6.3 A 6.3 x 32mm T 500 V ac - - Ceramic - - - SHT 6.3x32
RS Stock No. 167-6153
Mfr. Part No.0034.3127
BrandSchurter
SGD0.662
Each (In a Pack of 10)
units
10 A 5 x 20mm T 250 V ac - - Glass - - - FST 5x20
RS Stock No. 173-8061
Mfr. Part No.8020.5019.G
BrandSchurter
SGD578.03
1 Box of 1000
Box(es)
6.3 A 6.3 x 32mm T 500 V ac - - Ceramic - - - SHT 6.3x32
RS Stock No. 777-7491
Mfr. Part No.0034.3114
BrandSchurter
SGD0.711
Each (In a Pack of 10)
units
500 mA 5 x 20mm T 250 V ac - - Glass - - - FST 5x20
RS Stock No. 167-7796
Mfr. Part No.0034.1524
BrandSchurter
SGD0.657
Each (In a Pack of 10)
units
6.3 A 5 x 20mm F 250 V ac - - Glass - - - FSF 5x20
RS Stock No. 167-7998
Mfr. Part No.0034.3112
BrandSchurter
SGD0.711
Each (In a Pack of 10)
units
315 mA 5 x 20mm T 250 V ac - - Glass - - - FST 5x20
RS Stock No. 789-7848
Mfr. Part No.0034.1524
BrandSchurter
SGD0.707
Each (In a Bag of 10)
units
6.3 A 5 x 20mm F 250 V ac - - Glass - - - FSF 5x20
RS Stock No. 703-2675
Mfr. Part No.8020.0607.G
BrandSchurter
SGD1.684
Each (In a Pack of 10)
units
30 A 6.3 x 32mm T 250 V ac - - Ceramic - UL 248-14 - SUT 6.3x32
RS Stock No. 173-7913
Mfr. Part No.8020.0607.G
BrandSchurter
SGD717.56
1 Box of 1000
Box(es)
30 A 6.3 x 32mm T 250 V ac - - Ceramic - UL 248-14 - SUT 6.3x32
RS Stock No. 789-7845
Mfr. Part No.0034.1522
BrandSchurter
SGD0.606
Each (In a Bag of 10)
units
4 A 5 x 20mm F 250 V ac - - Glass - - - FSF 5x20