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. 806-8439
Mfr. Part No.ATQR12
BrandMersen
TWD448.50
Each (In a Pack of 10)
units
12 A 10 x 38mm T 600 V ac - - - - - - -
RS Stock No. 914-4342
Mfr. Part No.ATM3
BrandMersen
TWD245.00
Each
units
3 A 10 x 38mm F 600 V ac - - GMG - UL 248-14 - ATM
RS Stock No. 188-6962
Mfr. Part No.X213598
BrandMersen
TWD38.10
Each (In a Pack of 10)
units
4 A 10 x 38mm - 500 V ac - - Ceramic GG - - -
RS Stock No. 726-8846
Mfr. Part No.C1014578
BrandMersen
TWD361.00
Each
units
12.5 A 10 x 38mm FF 690 V ac - - Ceramic GR - - Protistor
RS Stock No. 230-3474
Mfr. Part No.D211028
BrandMersen
TWD28.50
Each (In a Pack of 10)
units
20 A 10 x 38mm - 500 V ac - - Ceramic GG - - -
RS Stock No. 188-6647
Mfr. Part No.N084008
BrandMersen
TWD79.10
Each (In a Pack of 10)
units
2.5 A 5 x 20mm FF 250 V ac - - Ceramic - - - -
RS Stock No. 230-3496
Mfr. Part No.X216151
BrandMersen
TWD24.70
Each (In a Pack of 10)
units
20 A 10 x 38mm - 500 V ac - - Ceramic AM - - -
RS Stock No. 188-6827
Mfr. Part No.Z084317
BrandMersen
TWD145.30
Each (In a Pack of 10)
units
16 A 6.3 x 32mm F 250 V ac - - Ceramic - - - -
RS Stock No. 188-6956
Mfr. Part No.D213098
BrandMersen
TWD25.10
Each (In a Pack of 10)
units
2 A 10 x 38mm - 500 V ac - - Ceramic GG - - -
RS Stock No. 230-3480
Mfr. Part No.E213099
BrandMersen
TWD38.30
Each (In a Pack of 10)
units
25 A 10 x 38mm - 400 V ac - - Ceramic GG - - -
RS Stock No. 914-4389
Mfr. Part No.ATQR30
BrandMersen
TWD343.00
Each
units
30 A 10 x 38mm T 300 V ac, 600 V ac - - Fibreglass - UL 248-4 - ATQR
RS Stock No. 715-8989
Mfr. Part No.DCT10-2
BrandMersen
TWD518.00
Each
units
10 A 10 x 38mm - 1 kV dc - - Melamine - - - -
RS Stock No. 188-6760
Mfr. Part No.Q084309
BrandMersen
TWD93.10
Each (In a Pack of 10)
units
3.15 A 6.3 x 32mm FF 250 V ac - - Ceramic - - - -
RS Stock No. 188-7274
Mfr. Part No.F214618
BrandMersen
TWD27.70
Each (In a Pack of 10)
units
16 A 10 x 38mm - 500 V ac - - Ceramic AM - - -
RS Stock No. 188-6906
Mfr. Part No.D084367
BrandMersen
TWD94.00
Each (In a Pack of 10)
units
315 mA 6.3 x 32mm FF 380 V ac - - Ceramic - - - -
RS Stock No. 136-0627
Mfr. Part No.HP10M7
BrandMersen
TWD323.00
Each
units
7 A 10 x 38mm - 1 kV dc - - Glass Melamine GPV UL2579 - -
RS Stock No. 136-0605
Mfr. Part No.D1014579
BrandMersen
TWD396.00
Each
units
16 A 10 x 38mm FF 500 V dc, 690 V ac, 700 V ac - - - GR E76491 - Protistor
RS Stock No. 179-2391
Mfr. Part No.S1045205
BrandMersen
TWD6,860.30
Each (In a Pack of 3)
units
10 A 520 x 55.1mm FF 24 kV ac - - Ceramic HV/LV - - FR
RS Stock No. 136-0613
Mfr. Part No.K1017207
BrandMersen
TWD743.00
Each
units
50 A 14 x 51mm - 500 V dc, 690 V ac, 700 V ac - - - GR UL 248-13 - Protistor
RS Stock No. 715-8982
Mfr. Part No.DCT1-2
BrandMersen
TWD249.00
Each
units
1 A 10 x 38mm - 1 kV dc - - Melamine - - - -