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. 377-0566
Mfr. Part No.M214578
BrandMersen
TWD134.20
Each (In a Pack of 5)
units
10 A DII 500 V ac GR E27 50 kA -40°C - - Ceramic
RS Stock No. 422-551
Mfr. Part No.10-005-07/20A
BrandSIBA
TWD135.80
Each (In a Pack of 5)
units
20 A DII 500 V ac GR E27 50 kA - - Grey Ceramic
RS Stock No. 181-8523
Mfr. Part No.6D16
TWD257.10
Each (In a Box of 10)
units
6 A DI 500 V ac GG E16 50 kA @ 500 V ac - - Green -
RS Stock No. 377-0314
Mfr. Part No.C201873
BrandMersen
TWD46.80
Each (In a Pack of 5)
units
63 A D02 400 V ac GG - 50 kA @ 500 V ac - - Copper Ceramic
RS Stock No. 181-8495
Mfr. Part No.63D33
TWD4,974.00
1 Box of 25
Box(es)
63 A DIII 500 V ac GG E33 50 kA @ 500 V ac - - Copper -
RS Stock No. 377-0544
Mfr. Part No.K213058
BrandMersen
TWD119.20
Each (In a Pack of 5)
units
4 A DII 500 V ac GR E27 50 kA -40°C - - Ceramic
RS Stock No. 377-0437
Mfr. Part No.Z219718
BrandMersen
TWD43.20
Each (In a Pack of 5)
units
2 A DII 500 V GG E27 - -40°C - Pink Ceramic
RS Stock No. 395-991
Mfr. Part No.5SC221
BrandSiemens
TWD793.00
Each (In a Pack of 3)
units
100 A DIV 500 V ac GG - 8 kA @ 400 V dc, 50 kA @ 500 V ac -5°C +40°C Red Ceramic
RS Stock No. 377-0645
Mfr. Part No.Q217640
BrandMersen
TWD182.80
Each (In a Pack of 5)
units
50 A DIII 500 V ac GR E33 50 kA -40°C - - Ceramic
RS Stock No. 866-3198
Mfr. Part No.0001.2023
BrandSchurter
TWD89.30
Each (In a Pack of 25)
units
6 A DTI 250 V ac GG - - - - Green Ceramic
RS Stock No. 396-168
Mfr. Part No.5SB221
BrandSiemens
TWD72.40
Each (In a Pack of 5)
units
4 A DII 500 V ac GG E27 8 kA @ 500 V dc, 50 kA @ 500 V ac -5°C +40°C Brown Ceramic
RS Stock No. 377-0695
Mfr. Part No.R201771
BrandMersen
TWD323.80
Each (In a Pack of 5)
units
20 A D02 440 V ac GR E18 - -40°C - - Ceramic
RS Stock No. 417-818
Mfr. Part No.2311401
BrandETI
TWD35.40
Each (In a Pack of 5)
units
2 A DI 500 V ac GG - gL E16 - - - Pink Ceramic
RS Stock No. 900-1576
Mfr. Part No.6D27SB
BrandAltech
TWD77.40
Each (In a Pack of 10)
units
6 A DII 500 V ac GG E27 - - - Green Glass
RS Stock No. 377-0386
Mfr. Part No.B214062
BrandMersen
TWD35.80
Each (In a Pack of 5)
units
10 A DI 500 V GG E16 - -40°C - Red Ceramic
RS Stock No. 900-1526
Mfr. Part No.63D33SC
BrandAltech
TWD535.60
Each (In a Pack of 5)
units
63 A DIII 500 V ac GR E33 - - - Copper Glass
RS Stock No. 413-658
Mfr. Part No.2312404
BrandETI
TWD28.00
Each (In a Pack of 5)
units
10 A DII 500 V ac GG - gL E27 - - - Red Ceramic
RS Stock No. 899-0920
Mfr. Part No.25D16FB
BrandAltech
TWD97.10
Each (In a Pack of 10)
units
25 A DI 500 V ac - E16 - - - Yellow Glass
RS Stock No. 377-0235
Mfr. Part No.B215695
BrandMersen
TWD38.00
Each (In a Pack of 5)
units
6 A D01 400 V ac GG - 100 kA - - Green Ceramic
RS Stock No. 413-620
Mfr. Part No.2312401
BrandETI
TWD55.20
Each (In a Pack of 5)
units
2 A DII 500 V ac GG - gL E27 - - - Pink Ceramic