Bottle Fuses

Bottle fuses are a type of fuse with differently sized ends. They are designed to ensure that the wrong fuse is never inserted into the circuit, as their larger end is sized according to the adaptor screw holes.

Fuses are designed to protect a circuit against overcurrent or other faults. When overcurrent occurs, the metal strip in the fuse will melt, causing the circuit to break and preventing further damage.

How do bottle fuses work?

Bottle fuses are inserted into the circuit in a similar way to normal fuses, by connecting their two ends to the adjacent parts, or by using a bottle fuse holder However, unlike regular fuses, when a bottle fuse blows, the colour indicator located at the head of the fuse pops out, to let the user know that there is a problem with a circuit. The fuse will then need to be changed.

Types of bottle fuses

Bottle fuses, as the name suggests, feature a bottle shaped body with a larger tip and a smaller one. They vary in exact shape and come in different sizes and voltage ranges depending on the specific application.


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Description Price Current Rating Bottle Fuse Size Voltage Rating Application Category Thread Size Breaking Capacity at Maximum Voltage Rating Minimum Operating Temperature Maximum Operating Temperature Gauge/Cap Colour Body Material
RS Stock No. 396-023
Mfr. Part No.5SC211
BrandSiemens
£17.993
Each (In a Pack of 3)
Units
80A DIV 500V ac gG - 50 kA @ 500 V ac, 8 kA @ 400 V dc -5°C +40°C Silver Ceramic
RS Stock No. 421-441
Mfr. Part No.10-028-07/63A
BrandSIBA
£4.784
Each (In a Pack of 5)
Units
63A D02 440V ac gR E18 - - - - Ceramic
RS Stock No. 377-0588
Mfr. Part No.T215090
BrandMersen
£3.918
Each (In a Pack of 5)
Units
16A DII 500V ac gR E27 50 kA -40°C - - Ceramic
RS Stock No. 415-935
Mfr. Part No.2211001
BrandETI
£0.648
Each (In a Pack of 5)
Units
2A D01 400V ac gG E14 50 kA @ 400 V ac, 8 kA @ 250 V dc - - Pink Ceramic
RS Stock No. 422-551
Mfr. Part No.10-005-07/20A
BrandSIBA
£3.168
Each (In a Pack of 5)
Units
20A DII 500V ac gR E27 50 kA - - Grey Ceramic
RS Stock No. 377-0409
Mfr. Part No.Q215087
BrandMersen
£0.826
Each (In a Pack of 5)
Units
20A DI 500V gG E16 - -40°C - Blue Ceramic
RS Stock No. 395-765
Mfr. Part No.5SA251
BrandSiemens
£3.325
Each (In a Pack of 10)
Units
10A DII 500V ac gG E16 50 kA @ 500 V ac, 8 kA @ 500 V dc -5°C +40°C Red Ceramic
RS Stock No. 377-0235
Mfr. Part No.B215695
BrandMersen
£0.802
Each (In a Pack of 5)
Units
6A D01 400V ac gG - 100 kA - - Green Ceramic
RS Stock No. 421-491
Mfr. Part No.10-005-07/16A
BrandSIBA
£3.088
Each (In a Pack of 5)
Units
16A DII 500V ac gR E27 50 kA - - - Ceramic
RS Stock No. 377-0487
Mfr. Part No.A211508
BrandMersen
£0.758
Each (In a Pack of 5)
Units
20A DII 500V gG E27 - -40°C - Blue Ceramic
RS Stock No. 421-514
Mfr. Part No.10-005-07/30A
BrandSIBA
£3.256
Each (In a Pack of 5)
Units
30A DII 500V ac gR E27 50 kA - - - Ceramic
RS Stock No. 377-0437
Mfr. Part No.Z219718
BrandMersen
£0.914
Each (In a Pack of 5)
Units
2A DII 500V gG E27 - -40°C - Pink Ceramic
RS Stock No. 622-1118
Mfr. Part No.5SE2340
BrandSiemens
£1.683
Each (In a Pack of 10)
Units
40A D02 400V ac gG - 50 kA @ 400 V ac, 8 kA @ 250 V dc -5°C +40°C Black Ceramic
RS Stock No. 377-0421
Mfr. Part No.Q215593
BrandMersen
£0.826
Each (In a Pack of 5)
Units
25A DI 500V gG E16 - -40°C - Yellow Ceramic
RS Stock No. 377-0443
Mfr. Part No.G222163
BrandMersen
£0.88
Each (In a Pack of 5)
Units
4A DII 500V gG E27 - -40°C - Brown Ceramic
RS Stock No. 397-509
Mfr. Part No.5SA261
BrandSiemens
£3.325
Each (In a Pack of 10)
Units
16A DII 500V ac gG E16 50 kA @ 500 V ac, 8 kA @ 500 V dc -5°C +40°C Grey Ceramic
RS Stock No. 395-991
Mfr. Part No.5SC221
BrandSiemens
£17.993
Each (In a Pack of 3)
Units
100A DIV 500V ac gG - 50 kA @ 500 V ac, 8 kA @ 400 V dc -5°C +40°C Red Ceramic
RS Stock No. 377-0308
Mfr. Part No.D215191
BrandMersen
£1.072
Each (In a Pack of 5)
Units
50A D02 400V ac gG - 50 kA @ 500 V ac -40°C - White Ceramic
RS Stock No. 377-0263
Mfr. Part No.B217742
BrandMersen
£0.948
Each (In a Pack of 5)
Units
20A D02 400V ac gG - 100 kA - - Blue Ceramic
RS Stock No. 421-435
Mfr. Part No.10-028-07/50A
BrandSIBA
£4.826
Each (In a Pack of 5)
Units
50A D02 440V ac gR E18 - - - - Ceramic