Cartridge Fuses

What are 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 High Rupture Capacity Application Category Breaking Capacity at Maximum Voltage Rating Includes Indicator Size Designation UL Class Maximum Operating Temperature
RS Stock No. 777-7473
Mfr. Part No.0034.3117
BrandSchurter
$0.763
Each (In a Pack of 10)
units
1 A 5 x 20mm T 250 V ac 20mm 5mm Glass - - 35 A @ 250 V ac - - - +125°C
RS Stock No. 789-7781
Mfr. Part No.0001.2507
BrandSchurter
$0.779
Each (In a Bag of 10)
units
2 A 5 x 20mm T 250 V ac, 300 V dc 20mm 5mm Ceramic Yes - 1500 A @ 250 V ac - - - +125°C
RS Stock No. 167-7601
Mfr. Part No.0034.1529
BrandSchurter
$1.015
Each (In a Pack of 10)
units
50 mA 5 x 20mm F 250 V ac 20mm 5mm Glass - - 10 x 0.05 A - - - +125°C
RS Stock No. 777-7489
Mfr. Part No.0034.1519
BrandSchurter
$0.515
Each (In a Pack of 10)
units
2 A 5 x 20mm F 250 V ac 20mm 5mm Glass - - 35 A @ 250 V ac - - - +125°C
RS Stock No. 167-7702
Mfr. Part No.0034.1516
BrandSchurter
$0.553
Each (In a Pack of 10)
units
1 A 5 x 20mm F 250 V ac 20mm 5mm Glass - - 35 A - - - +125°C
RS Stock No. 777-7491
Mfr. Part No.0034.3114
BrandSchurter
$0.646
Each (In a Pack of 10)
units
500 mA 5 x 20mm T 250 V ac 20mm 5mm Glass - - 35 A @ 250 V ac - - - +125°C
RS Stock No. 167-6169
Mfr. Part No.0034.3129
BrandSchurter
$1.067
Each (In a Pack of 10)
units
16 A 5 x 20mm T 250 V ac 20mm 5mm Glass - - 10 x 16 A - - - +125°C
RS Stock No. 777-7495
Mfr. Part No.0034.1523
BrandSchurter
$0.746
Each (In a Pack of 10)
units
5 A 5 x 20mm F 250 V ac 20mm 5mm Glass - - 50 A @ 250 V ac - - - +125°C
RS Stock No. 167-7538
Mfr. Part No.0034.3111
BrandSchurter
$0.794
Each (In a Pack of 10)
units
250 mA 5 x 20mm T 250 V ac 20mm 5mm Glass - - 35 A - - - +125°C
RS Stock No. 777-7463
Mfr. Part No.0034.3118
BrandSchurter
$0.625
Each (In a Pack of 10)
units
1.25 A 5 x 20mm T 250 V ac 20mm 5mm Glass - - 35 A @ 250 V ac - - - +125°C
RS Stock No. 167-6153
Mfr. Part No.0034.3127
BrandSchurter
$0.759
Each (In a Pack of 10)
units
10 A 5 x 20mm T 250 V ac 20mm 5mm Glass - - 10 x 10 A - - - +125°C
RS Stock No. 173-7913
Mfr. Part No.8020.0607.G
BrandSchurter
$0.894
Each (In a Box of 1000)
units
30 A 6.3 x 32mm T 250 V ac 32mm 6.3mm Ceramic - - 500 A - - - +85°C
RS Stock No. 703-2675
Mfr. Part No.8020.0607.G
BrandSchurter
$1.813
Each (In a Pack of 10)
units
30 A 6.3 x 32mm T 250 V ac 32mm 6.3mm Ceramic - - 500 A - - - +85°C
RS Stock No. 167-7869
Mfr. Part No.0001.1004
BrandSchurter
$0.67
Each (In a Pack of 10)
units
1 A 5 x 20mm F 250 V ac 20mm 5mm Ceramic Yes - 1500 A - - - +125°C
RS Stock No. 789-7842
Mfr. Part No.0034.1526
BrandSchurter
$0.747
Each (In a Bag of 10)
units
10 A 5 x 20mm F 250 V ac 20mm 5mm Glass - - 100 A @ 250 V ac - - - +125°C
RS Stock No. 167-8676
Mfr. Part No.0034.5204
BrandSchurter
$1.789
Each (In a Pack of 10)
units
63 mA 6.3 x 32mm T 250 V ac 32mm 6.3mm Glass Yes - 35 A - - - +85°C
RS Stock No. 167-8092
Mfr. Part No.0034.3122
BrandSchurter
$0.688
Each (In a Pack of 10)
units
3.15 A 5 x 20mm T 250 V ac 20mm 5mm Glass - - 35 A - - - +125°C
RS Stock No. 173-7959
Mfr. Part No.0090.0001
BrandSchurter
$13.412
Each (In a Box of 10)
units
1 A 10 x 38mm F 1 kV dc 38mm 10.3mm Melamine - - 20 kA - Midget - +85°C
RS Stock No. 167-7768
Mfr. Part No.0034.1521
BrandSchurter
$0.558
Each (In a Pack of 10)
units
3.15 A 5 x 20mm F 250 V ac 20mm 5mm Glass - - 35 A - - - +125°C
RS Stock No. 703-2647
Mfr. Part No.8020.0603.PT
BrandSchurter
$1.582
Each (In a Pack of 10)
units
12 A 6.3 x 32mm T 250 V ac 32mm 6.3mm Ceramic - - 500 A - 3AB UL 248-14 +85°C