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. 377-0443
Mfr. Part No.G222163
BrandMersen
SGD1.406
Each (In a Pack of 5)
units
4A DII 500V gG E27 - -40°C - Brown Ceramic
RS Stock No. 377-0437
Mfr. Part No.Z219718
BrandMersen
SGD1.492
Each (In a Pack of 5)
units
2A DII 500V gG E27 - -40°C - Pink Ceramic
RS Stock No. 377-0257
Mfr. Part No.R223023
BrandMersen
SGD1.392
Each (In a Pack of 5)
units
16A D01 400V ac gG - 100 kA -40°C - Grey Ceramic
RS Stock No. 377-0465
Mfr. Part No.K200707
BrandMersen
SGD1.098
Each (In a Pack of 5)
units
10A DII 500V gG E27 - -40°C - Red Ceramic
RS Stock No. 377-0279
Mfr. Part No.W213160
BrandMersen
SGD1.576
Each (In a Pack of 5)
units
25A D02 400V ac gG - 50 kA @ 500 V ac -40°C - Yellow Ceramic
RS Stock No. 377-0370
Mfr. Part No.C213557
BrandMersen
SGD1.596
Each (In a Pack of 5)
units
6A DI 500V gG E16 - -40°C - Green Ceramic
RS Stock No. 377-0487
Mfr. Part No.A211508
BrandMersen
SGD1.82
Each (In a Pack of 5)
units
20A DII 500V gG E27 - -40°C - Blue Ceramic
RS Stock No. 377-0285
Mfr. Part No.R219826
BrandMersen
SGD1.914
Each (In a Pack of 5)
units
35A D02 400V ac gG - 50 kA @ 500 V ac -40°C - Black Ceramic
RS Stock No. 377-0235
Mfr. Part No.B215695
BrandMersen
SGD1.486
Each (In a Pack of 5)
units
6A D01 400V ac gG - 100 kA - - Green Ceramic
RS Stock No. 377-0471
Mfr. Part No.K201765
BrandMersen
SGD1.194
Each (In a Pack of 5)
units
16A DII 500V gG E27 - -40°C - Grey Ceramic
RS Stock No. 377-0544
Mfr. Part No.K213058
BrandMersen
SGD4.624
Each (In a Pack of 5)
units
4A DII 500V ac gR E27 50 kA -40°C - - Ceramic
RS Stock No. 377-0314
Mfr. Part No.C201873
BrandMersen
SGD2.07
Each (In a Pack of 5)
units
63A D02 400V ac gG - 50 kA @ 500 V ac - - Copper Ceramic
RS Stock No. 377-0336
Mfr. Part No.N212647
BrandMersen
SGD9.792
Each (In a Pack of 5)
units
100A D03 400V ac gG - 50 kA -40°C - Red Ceramic
RS Stock No. 377-0409
Mfr. Part No.Q215087
BrandMersen
SGD1.272
Each (In a Pack of 5)
units
20A DI 500V gG E16 - -40°C - Blue Ceramic
RS Stock No. 377-0500
Mfr. Part No.C214063
BrandMersen
SGD1.936
Each (In a Pack of 5)
units
35A DIII 500V gG E33 - -40°C - Black Ceramic
RS Stock No. 377-0320
Mfr. Part No.L216716
BrandMersen
SGD9.192
Each (In a Pack of 5)
units
80A D03 400V ac gG - 50 kA -40°C - Silver Ceramic
RS Stock No. 377-0308
Mfr. Part No.D215191
BrandMersen
SGD1.848
Each (In a Pack of 5)
units
50A D02 400V ac gG - 50 kA @ 500 V ac -40°C - White Ceramic
RS Stock No. 377-0364
Mfr. Part No.G213055
BrandMersen
SGD1.412
Each (In a Pack of 5)
units
4A DI 500V gG E16 - -40°C - Brown Ceramic
RS Stock No. 377-0601
Mfr. Part No.B216109
BrandMersen
SGD4.814
Each (In a Pack of 5)
units
25A DII 500V ac gR E27 50 kA - - - Ceramic
RS Stock No. 377-0645
Mfr. Part No.Q217640
BrandMersen
SGD5.19
Each (In a Pack of 5)
units
50A DIII 500V ac gR E33 50 kA -40°C - - Ceramic