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. 668-6057
BrandRS PRO
£0.166
Each (In a Pack of 10)
Units
10A 6.3 x 32mm F - 250V ac - Glass - - - - -
RS Stock No. 563-738
BrandRS PRO
£0.204
Each (In a Pack of 10)
Units
250mA 5 x 20mm T - 250V ac - Glass - - - - -
RS Stock No. 563-340
BrandRS PRO
£1.39
1 Pack of 10
Pack(s)
5A 5 x 20mm F - 250V ac - Ceramic - - - - -
RS Stock No. 563-340A
BrandRS PRO
£0.137
Each (In a Pack of 100)
Units
5A 5 x 20mm F 5mm 250V ac 20mm Ceramic - - - - -
RS Stock No. 414-049
BrandRS PRO
£6.75
1 Pack of 10
Pack(s)
3.15A 6.3 x 32mm T - 500V ac - Ceramic - UL 248-13 - - -
RS Stock No. 667-0330
BrandRS PRO
£59.00
1 Box of 10
Box(es)
60A 30 x 57mm - - 415V ac - - - - - - -
RS Stock No. 413-204
BrandRS PRO
£0.664
Each (In a Pack of 10)
Units
2A 6.3 x 32mm F - 500V ac - Ceramic - UL 248-13 - - -
RS Stock No. 413-204A
BrandRS PRO
£0.75
Each (In a Pack of 100)
Units
2A 6.3 x 32mm F 6.35mm 500V ac 32mm Ceramic - UL 248-13 - - -
RS Stock No. 413-226A
BrandRS PRO
£0.75
Each (In a Pack of 100)
Units
5A 6.3 x 32mm F 6.35mm 500V ac 32mm Ceramic - UL 248-13 - - -
RS Stock No. 413-226
BrandRS PRO
£0.664
Each (In a Pack of 10)
Units
5A 6.3 x 32mm F - 500V ac - Ceramic - UL 248-13 - - -
RS Stock No. 668-6023
BrandRS PRO
£1.63
1 Pack of 10
Pack(s)
1A 6.3 x 32mm F - 250V ac - Glass - - - - -
RS Stock No. 668-6091
BrandRS PRO
£0.262
Each (In a Pack of 10)
Units
10A 6.3 x 32mm T - 250V ac - Glass - - - - -
RS Stock No. 420-218
BrandRS PRO
£2.026
Each (In a Pack of 10)
Units
10A 6.3 x 32mm FF - 500V ac - Ceramic - UL 248-13 - - -
RS Stock No. 563-441A
BrandRS PRO
£0.136
Each (In a Pack of 100)
Units
3.15A 5 x 20mm F 5mm 250V ac 20mm Ceramic - - - - -
RS Stock No. 563-441
BrandRS PRO
£0.142
Each (In a Pack of 10)
Units
3.15A 5 x 20mm F - 250V ac - Ceramic - - - - -
RS Stock No. 668-6089
BrandRS PRO
£2.62
1 Pack of 10
Pack(s)
5A 6.3 x 32mm T - 250V ac - Glass - - - - -
RS Stock No. 563-334
BrandRS PRO
£0.165
Each (In a Pack of 10)
Units
10A 5 x 20mm T - 250V ac - Glass - - - - -
RS Stock No. 563-334A
BrandRS PRO
£0.129
Each (In a Pack of 100)
Units
10A 5 x 20mm T 5mm 250V ac 20mm Glass - - - - -
RS Stock No. 247-3955
BrandRS PRO
£1.676
Each (In a Pack of 10)
Units
20A 6.3 x 32mm FF - 500V ac - Ceramic - - - - -
RS Stock No. 668-6051
BrandRS PRO
£0.17
Each (In a Pack of 10)
Units
15A 6.3 x 32mm F - 250V ac - Glass - - - - -