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. 421-457
Mfr. Part No.10-005-07/2A
BrandSIBA
SGD11.05
Each (In a Pack of 5)
units
2 A DII 500 V ac GR E27 50 kA - - - Ceramic
RS Stock No. 415-963
Mfr. Part No.2211004
BrandETI
SGD1.282
Each (In a Pack of 5)
units
10 A D01 400 V ac GG E14 8 kA @ 250 V dc, 50 kA @ 400 V ac - - Red Ceramic
RS Stock No. 377-0421
Mfr. Part No.Q215593
BrandMersen
SGD1.618
Each (In a Pack of 5)
units
25 A DI 500 V GG E16 - -40°C - Yellow Ceramic
RS Stock No. 421-479
Mfr. Part No.10-005-07/6A
BrandSIBA
SGD5.434
Each (In a Pack of 5)
units
6 A DII 500 V ac GR E27 50 kA - - - Ceramic
RS Stock No. 202-7052
Mfr. Part No.5SE1310
BrandSiemens
SGD19.716
Each (In a Pack of 10)
units
10 A D01 400 V GR - - - - - -
RS Stock No. 377-0566
Mfr. Part No.M214578
BrandMersen
SGD6.198
Each (In a Pack of 5)
units
10 A DII 500 V ac GR E27 50 kA -40°C - - Ceramic
RS Stock No. 181-8647
Mfr. Part No.6D16
SGD14.78
Each
units
6 A DI 500 V ac GG E16 50 kA @ 500 V ac - - Green -
RS Stock No. 377-0623
Mfr. Part No.K217129
BrandMersen
SGD8.428
Each (In a Pack of 5)
units
35 A DIII 500 V ac GR E33 50 kA -40°C - - Ceramic
RS Stock No. 377-0522
Mfr. Part No.R215088
BrandMersen
SGD2.194
Each (In a Pack of 5)
units
63 A DIII 500 V GG E33 - -40°C - Copper Ceramic
RS Stock No. 181-8581
Mfr. Part No.16D27Q
SGD126.49
1 Box of 25
Box(es)
16 A DII 500 V ac GG E27 50 kA @ 500 V ac - - Grey -
RS Stock No. 203-3953
Mfr. Part No.5SD430
BrandSiemens
SGD43.794
Each (In a Pack of 5)
units
20 A DII 500 V GR E27 - - - - -
RS Stock No. 396-308
Mfr. Part No.5SB251
BrandSiemens
SGD3.044
Each (In a Pack of 5)
units
10 A DII 500 V ac GG E27 8 kA @ 500 V dc, 50 kA @ 500 V ac -5°C +40°C Red Ceramic
RS Stock No. 182-1537
Mfr. Part No.35D33
SGD5.72
Each (In a Box of 25)
units
35 A DIII 500 V ac - E33 50 kA @ 500 V ac - - Black -
RS Stock No. 415-941
Mfr. Part No.2211002
BrandETI
SGD1.318
Each (In a Pack of 5)
units
4 A D01 400 V ac GG E14 8 kA @ 250 V dc, 50 kA @ 400 V ac - - Brown Ceramic
RS Stock No. 417-818
Mfr. Part No.2311401
BrandETI
SGD1.68
Each (In a Pack of 5)
units
2 A DI 500 V ac GG - gL E16 - - - Pink Ceramic
RS Stock No. 421-520
Mfr. Part No.10-007-07/35A
BrandSIBA
SGD7.782
Each (In a Pack of 5)
units
35 A DIII 500 V ac GR E33 50 kA - - - Ceramic
RS Stock No. 377-0588
Mfr. Part No.T215090
BrandMersen
SGD10.48
Each (In a Pack of 5)
units
16 A DII 500 V ac GR E27 50 kA -40°C - - Ceramic
RS Stock No. 377-0695
Mfr. Part No.R201771
BrandMersen
SGD14.932
Each (In a Pack of 5)
units
50 A D02 440 V ac GR E18 - -40°C - - Ceramic
RS Stock No. 181-8474
Mfr. Part No.25D27
SGD139.27
1 Box of 25
Box(es)
25 A DII 500 V ac GG E27 50 kA @ 500 V ac - - Yellow -
RS Stock No. 421-485
Mfr. Part No.10-005-07/10A
BrandSIBA
SGD5.434
Each (In a Pack of 5)
units
10 A DII 500 V ac GR E27 50 kA - - Grey Ceramic