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 Diameter Voltage Rating Overall Length Body Material Application Category UL Class Fuse Standard Priced to Clear Series
RS Stock No. 412-605
Mfr. Part No.TDC180-13A
£0.313
Each (In a Pack of 10)
Units
13A 6.3 x 25mm F - 240V ac - Ceramic - - - - TDC180
RS Stock No. 412-605A
Mfr. Part No.TDC180-13A
£0.198
Each (In a Pack of 100)
Units
13A - F 6.3mm - - Ceramic - - - - -
RS Stock No. 459-7918
Mfr. Part No.DMM-B-44/100
£7.998
Each (In a Pack of 5)
Units
440mA 10 x 35mm F - 1 kV ac, 1 kV dc - Melamine - - - - DMM-B
RS Stock No. 412-560
Mfr. Part No.TDC180-3A
£0.265
Each (In a Pack of 10)
Units
3A 6.3 x 25mm F - 240V ac - Ceramic - - - - TDC180
RS Stock No. 412-560A
Mfr. Part No.TDC180-3A
£0.165
Each (In a Pack of 100)
Units
3A - F 6.3mm - - Ceramic - - - - -
RS Stock No. 412-576
Mfr. Part No.TDC180-5A
£0.192
Each (In a Pack of 10)
Units
5A 6.3 x 25mm F - 240V ac - Ceramic - - - - TDC180
RS Stock No. 412-576A
Mfr. Part No.TDC180-5A
£0.165
Each (In a Pack of 100)
Units
5A - F 6.3mm - - Ceramic - - - - -
RS Stock No. 459-7924
Mfr. Part No.DMM-B-11A
£12.244
Each (In a Pack of 5)
Units
11A 10 x 38mm F - 1kV ac - Melamine - - - - DMM-B
RS Stock No. 412-598A
Mfr. Part No.TDC180-10A
£0.168
Each (In a Pack of 100)
Units
10A - F 6.3mm - - Ceramic - - - - -
RS Stock No. 412-598
Mfr. Part No.TDC180-10A
£0.394
Each (In a Pack of 10)
Units
10A 6.3 x 25mm F - 240V ac - Ceramic - - - - TDC180
RS Stock No. 169-9430
Mfr. Part No.S505-5-R
£183.22
1 Bag of 1000
Bag(s)
5A 5 x 20mm T - 250V ac - Ceramic - - - - S505
RS Stock No. 537-1492
Mfr. Part No.S505-5-R
£0.228
Each (In a Pack of 10)
Units
5A 5 x 20mm T - 250V ac - Ceramic - - - - S505
RS Stock No. 169-9421
Mfr. Part No.S506-500-R
£104.47
1 Bag of 1000
Bag(s)
500mA 5 x 20mm T - 250V ac - Glass - - - - S506
RS Stock No. 537-1385
Mfr. Part No.S506-500-R
£0.13
Each (In a Pack of 10)
Units
500mA 5 x 20mm T - 250V ac - Glass - - - - S506
RS Stock No. 412-986
Mfr. Part No.TDC180-1A
£2.69
1 Pack of 10
Pack(s)
1A 6.3 x 25mm F - 240V ac - Ceramic - - - - TDC180
RS Stock No. 412-986A
Mfr. Part No.TDC180-1A
£0.244
Each (In a Pack of 100)
Units
1A - F 6.3mm - - Ceramic - - - - -
RS Stock No. 412-554
Mfr. Part No.TDC180-2A
£0.392
Each (In a Pack of 10)
Units
2A 6.3 x 25mm F - 240V ac - Ceramic - - - - TDC180
RS Stock No. 412-554A
Mfr. Part No.TDC180-2A
£0.165
Each (In a Pack of 100)
Units
2A - F 6.3mm - - Ceramic - - - - -
RS Stock No. 169-9432
Mfr. Part No.S505-2-R
£107.68
1 Bag of 1000
Bag(s)
2A 5 x 20mm T - 250V ac - Ceramic - - - - S505
RS Stock No. 537-1515
Mfr. Part No.S505-2-R
£0.134
Each (In a Pack of 10)
Units
2A 5 x 20mm T - 250V ac - Ceramic - - - - S505