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. 412-986
Mfr. Part No.TDC180-1A
MYR1.794
Each (In a Pack of 10)
units
1 A 6.3 x 25mm F 240 V ac - - Ceramic - - - TDC180
RS Stock No. 188-7268
Mfr. Part No.Y211552
BrandMersen
MYR12.821
Each (In a Pack of 10)
units
10 A 10 x 38mm - 500 V ac - - Ceramic AM - - -
RS Stock No. 169-9386
Mfr. Part No.S500-10-R
MYR808.86
1 Bag of 1000
Bag(s)
10 A 5 x 20mm F 250 V ac - - Glass - - - S500
RS Stock No. 537-0966
Mfr. Part No.S500-10-R
MYR0.932
Each (In a Pack of 10)
units
10 A 5 x 20mm F 250 V ac - - Glass - - - S500
RS Stock No. 413-204
BrandRS PRO
MYR3.915
Each (In a Pack of 10)
units
2 A 6.3 x 32mm F 500 V ac - - Ceramic - UL 248-13 - -
RS Stock No. 563-699
BrandRS PRO
MYR1.456
Each (In a Pack of 10)
units
3.15 A 5 x 20mm T 250 V ac - - Ceramic - - - -
RS Stock No. 413-210
BrandRS PRO
MYR3.956
Each (In a Pack of 10)
units
3 A 6.3 x 32mm F 500 V ac - - Ceramic - UL 248-13 - 70-065-63
RS Stock No. 412-510
Mfr. Part No.TDC11-2A
MYR12.739
Each (In a Pack of 10)
units
2 A 6.3 x 32mm T 250 V ac - - Glass - - - TDC11
RS Stock No. 167-7702
Mfr. Part No.0034.1516
BrandSchurter
MYR1.846
Each (In a Pack of 10)
units
1 A 5 x 20mm F 250 V ac - - Glass - - - FSF 5x20
RS Stock No. 413-226
BrandRS PRO
MYR2.43
Each (In a Pack of 10)
units
5 A 6.3 x 32mm F 500 V ac - - Ceramic - UL 248-13 - -
RS Stock No. 413-197
BrandRS PRO
MYR3.956
Each (In a Pack of 10)
units
1 A 6.3 x 32mm F 500 V ac - - Ceramic - UL 248-13 - -
RS Stock No. 848-2680
Mfr. Part No.ABC-10-R
MYR5.00
Each
units
10 A 6.3 x 32mm F 125 V dc, 250 V ac - - Ceramic - - - ABC
RS Stock No. 169-9377
Mfr. Part No.TDC11-2A
MYR7,806.92
1 Bag of 1000
Bag(s)
2 A 6.3 x 32mm T 250 V ac - - Glass - - - TDC11
RS Stock No. 458-8554
Mfr. Part No.KTK-25
MYR54.208
Each (In a Pack of 5)
units
25 A 10 x 38mm F 600 V ac - - Melamine - - - KTK
RS Stock No. 188-7038
Mfr. Part No.W219232
BrandMersen
MYR4.27
Each (In a Pack of 10)
units
4 A 10 x 38mm - 500 V ac - - Ceramic AM - - -
RS Stock No. 541-3029
Mfr. Part No.0313002.MXP
BrandLittelfuse
MYR2.988
Each (In a Pack of 10)
units
2 A 6.3 x 32mm T 250 V ac - - Glass - - - 313
RS Stock No. 412-611
Mfr. Part No.TDC11-5A
MYR17.338
Each (In a Pack of 10)
units
5 A 6.3 x 32mm T 250 V ac - - Glass - - - TDC11
RS Stock No. 169-9378
Mfr. Part No.TDC11-5A
MYR10,710.00
1 Bag of 1000
Bag(s)
5 A 6.3 x 32mm T 250 V ac - - Glass - - - TDC11
RS Stock No. 769-0032
Mfr. Part No.0313002.HXP
BrandLittelfuse
MYR3.12
Each (In a Pack of 10)
units
2 A 6.3 x 32mm T 250 V ac - - Glass - - - 313
RS Stock No. 337-4916
Mfr. Part No.0KLK010.T
BrandLittelfuse
MYR74.022
Each (In a Pack of 5)
units
10 A 10 x 38mm F 500 V dc, 600 V ac - - Melamine - - - KLK