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. 179-2389
Mfr. Part No.S1047965
BrandMersen
£144.927
Each (In a Pack of 3)
Units
6.3A 520 x 55.1mm FF - 24kV ac - Ceramic HV/LV - - - FR
RS Stock No. 171-6803
Mfr. Part No.1025HC50-R
£1.33
Each (In a Pack of 5)
Units
50A 12.4 x 4.5mm F - 60 V dc, 250 V ac - Ceramic - - - - 1025HC
RS Stock No. 136-0567
Mfr. Part No.N090517
BrandMersen
£0.267
Each (In a Pack of 10)
Units
1.6A 5 x 20mm F - 250V ac - Glass - - - - -
New
RS Stock No. 212-0152
Mfr. Part No.DF2HA1251
£49.063
Each (In a Pack of 3)
Units
250A NH1 - - 690V ac - - - - - - -
RS Stock No. 136-0516
Mfr. Part No.A1018624
BrandMersen
£14.737
Each (In a Box of 10)
Units
32A 22.2 x 58mm - - 500 V dc, 690 V ac, 700 V ac - - gR UL 248-13 - - Protistor
RS Stock No. 181-8584
Mfr. Part No.C14M32
£1.71
Each (In a Box of 10)
Units
32A 14 x 51mm - - 500V ac - Ceramic aM - - - C14M
RS Stock No. 171-6779
Mfr. Part No.S505H-V-3-15-R
£0.70
Each (In a Pack of 5)
Units
3A 5 x 20mm T - 250V ac - Ceramic - - - - S505H
RS Stock No. 182-1480
Mfr. Part No.80KR85
£6.146
Each (In a Box of 20)
Units
80A 23 x 57mm - - 415V ac - Ceramic gG - - - KR85
New
RS Stock No. 210-6950
Mfr. Part No.3NC1425-5
BrandSiemens
£12.655
Each (In a Pack of 10)
Units
25A - - - - - - - - - - -
RS Stock No. 174-0623
Mfr. Part No.031201.5MXP
BrandWickmann
£0.245
Each (In a Pack of 20)
Units
1.5A 6.3 x 32mm F - 250V ac - Glass - UL 248-14 - - 312
RS Stock No. 171-6790
Mfr. Part No.S505SC-2.5-R
£0.29
Each (In a Pack of 5)
Units
2.5A 5 x 20mm T - 250V ac - Ceramic - - - - S505SC
RS Stock No. 182-1532
Mfr. Part No.SMD10
£3.021
Each (In a Box of 20)
Units
10A 12.7 x 29mm - - 415V ac - Ceramic gG - - - SMD
RS Stock No. 122-5271
Mfr. Part No.60220010
BrandSocomec
£1.494
Each (In a Pack of 10)
Units
10A 14.3 x 51mm - - 690V ac - - gG - - - -
RS Stock No. 181-2608
Mfr. Part No.DF2CA02
£3.229
Each (In a Box of 10)
Units
2A 10 x 38mm - - 500V ac - - aM - - - DF2
RS Stock No. 182-1485
Mfr. Part No.20KR85
£6.068
Each (In a Box of 20)
Units
20A 23 x 57mm - - 415V ac - Ceramic gG - - - KR85
RS Stock No. 122-5279
Mfr. Part No.60320063
BrandSocomec
£2.989
Each (In a Pack of 10)
Units
63A 22.2 x 58mm - - 690V ac - - gG - - - -
RS Stock No. 209-6431
Mfr. Part No.C1036980
BrandMersen
£3.321
Each (In a Pack of 10)
Units
32A 12.7 x 29mm gG - - - Ceramic - - IEC 60269 - -
RS Stock No. 209-9421
Mfr. Part No.8020.2052
BrandSchurter
£4.998
Each (In a Pack of 10)
Units
20A 10.3 x 38mm T - - - Ceramic - - EV Fuse - -
RS Stock No. 179-2395
Mfr. Part No.V1045207
BrandMersen
£171.533
Each (In a Pack of 3)
Units
20A 520 x 55.1mm FF - 24kV ac - Ceramic HV/LV - - - FR
New
RS Stock No. 210-7009
Mfr. Part No.3NW8004-1
BrandSiemens
£4.372
Each (In a Pack of 10)
Units
4A - - 10mm - - - - - - - -