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
PHP776.009
Each (In a Pack of 10)
units
12A 10 x 38mm T 600V ac - - - - - - -
RS Stock No. 188-6956
Mfr. Part No.D213098
BrandMersen
PHP75.684
Each (In a Pack of 10)
units
2A 10 x 38mm - 500V ac - - Ceramic gG - - -
RS Stock No. 188-6984
Mfr. Part No.S218194
BrandMersen
PHP111.889
Each (In a Pack of 10)
units
10A 10 x 38mm - 500V ac - - Ceramic gG - - -
RS Stock No. 715-8989
Mfr. Part No.DCT10-2
BrandMersen
PHP896.47
Each
units
10A 10 x 38mm - 1kV dc - - Melamine - - - -
RS Stock No. 230-3581
Mfr. Part No.S215135
BrandMersen
PHP96.441
Each (In a Pack of 10)
units
6A 14 x 51mm - 690V ac - - Ceramic aM - - -
RS Stock No. 188-6978
Mfr. Part No.K215128
BrandMersen
PHP56.31
Each (In a Pack of 10)
units
6A 10 x 38mm - 500V ac - - Ceramic gG - - -
RS Stock No. 188-7454
Mfr. Part No.Y215646
BrandMersen
PHP191.224
Each (In a Pack of 10)
units
63A 22.2 x 58mm - 690V ac - - Ceramic gG - - -
RS Stock No. 188-6962
Mfr. Part No.X213598
BrandMersen
PHP146.70
Each (In a Pack of 10)
units
4A 10 x 38mm - 500V ac - - Ceramic gG - - -
RS Stock No. 806-8405
Mfr. Part No.E1014580
BrandMersen
PHP589.699
Each (In a Pack of 10)
units
20A 10 x 38mm F 690V ac - - - gR - - -
RS Stock No. 188-6827
Mfr. Part No.Z084317
BrandMersen
PHP251.433
Each (In a Pack of 10)
units
16A 6.3 x 32mm F 250V ac - - Ceramic - - - -
RS Stock No. 806-8417
Mfr. Part No.HP10M25
BrandMersen
PHP495.472
Each (In a Pack of 10)
units
25A 10 x 38mm - 1kV dc - - Melamine gPV - - -
RS Stock No. 188-7325
Mfr. Part No.W216656
BrandMersen
PHP109.956
Each (In a Pack of 10)
units
32A 14 x 51mm - 500V ac - - Ceramic gG - - -
RS Stock No. 304-1048
Mfr. Part No.A214107
BrandMersen
PHP64.033
Each (In a Pack of 10)
units
32A 10 x 38mm - 400V ac - - Ceramic gG - - -
RS Stock No. 230-3547
Mfr. Part No.H222210
BrandMersen
PHP91.258
Each (In a Pack of 10)
units
6A 14 x 51mm - 690V ac - - Ceramic gG - - -
RS Stock No. 188-7000
Mfr. Part No.G200750
BrandMersen
PHP57.824
Each (In a Pack of 10)
units
16A 10 x 38mm - 500V ac - - Ceramic gG - - -
RS Stock No. 715-8991
Mfr. Part No.DCT15-2
BrandMersen
PHP896.47
Each
units
15A 10 x 38mm - 1kV dc - - Melamine - - - -
RS Stock No. 914-4351
Mfr. Part No.ATM5
BrandMersen
PHP396.51
Each
units
5A 10 x 38mm F 600V ac - - GMG - - - ATM
RS Stock No. 914-4314
Mfr. Part No.T217275J
BrandMersen
PHP772.74
Each
units
1A 10 x 38mm T 300 V ac, 600 V ac - - Fibreglass - - - ATDR
RS Stock No. 914-4342
Mfr. Part No.ATM3
BrandMersen
PHP396.51
Each
units
3A 10 x 38mm F 600V ac - - GMG - - - ATM
RS Stock No. 188-6798
Mfr. Part No.V084313
BrandMersen
PHP210.893
Each (In a Pack of 10)
units
8A 6.3 x 32mm FF 250V ac - - Ceramic - - - -