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. 413-658
Mfr. Part No.2312404
BrandETI
HK$7.788
Each (In a Pack of 5)
units
10 A DII 500 V ac GG - gL E27 - - - Red Ceramic
RS Stock No. 377-0493
Mfr. Part No.X212540
BrandMersen
HK$8.594
Each (In a Pack of 5)
units
25 A DII 500 V GG E27 - -40°C - Yellow Ceramic
RS Stock No. 396-061
Mfr. Part No.5SB271
BrandSiemens
HK$16.436
Each (In a Pack of 5)
units
20 A DII 500 V ac GG E27 8 kA @ 500 V dc, 50 kA @ 500 V ac -5°C +40°C Blue Ceramic
RS Stock No. 421-520
Mfr. Part No.10-007-07/35A
BrandSIBA
HK$45.67
Each (In a Pack of 5)
units
35 A DIII 500 V ac GR E33 50 kA - - - Ceramic
RS Stock No. 413-670
Mfr. Part No.2312406
BrandETI
HK$10.668
Each (In a Pack of 5)
units
20 A DII 500 V ac GG - gL E27 - - - Blue Ceramic
RS Stock No. 202-7155
Mfr. Part No.5SE1335
BrandSiemens
HK$162.609
Each (In a Pack of 10)
units
35 A D02 400 V GR - - - - - -
RS Stock No. 415-963
Mfr. Part No.2211004
BrandETI
HK$7.162
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. 202-7123
Mfr. Part No.5SE1320
BrandSiemens
HK$123.179
Each (In a Pack of 10)
units
20 A D02 400 V GR - - - - - -
RS Stock No. 417-868
Mfr. Part No.2311406
BrandETI
HK$7.642
Each (In a Pack of 5)
units
20 A DI 500 V ac GG - gL E16 - - - Blue Ceramic
RS Stock No. 202-7052
Mfr. Part No.5SE1310
BrandSiemens
HK$116.858
Each (In a Pack of 10)
units
10 A D01 400 V GR - - - - - -
RS Stock No. 421-491
Mfr. Part No.10-005-07/16A
BrandSIBA
HK$33.092
Each (In a Pack of 5)
units
16 A DII 500 V ac GR E27 50 kA - - - Ceramic
RS Stock No. 421-429
Mfr. Part No.10-028-07/35A
BrandSIBA
HK$53.918
Each (In a Pack of 5)
units
35 A D02 440 V ac GR E18 - - - - Ceramic
RS Stock No. 377-0336
Mfr. Part No.N212647
BrandMersen
HK$70.88
Each (In a Pack of 5)
units
100 A D03 400 V ac GG - 50 kA -40°C - Red Ceramic
RS Stock No. 202-7074
Mfr. Part No.5SE1325
BrandSiemens
HK$125.991
Each (In a Pack of 10)
units
25 A D02 400 V GR - - - - - -
RS Stock No. 377-0500
Mfr. Part No.C214063
BrandMersen
HK$14.474
Each (In a Pack of 5)
units
35 A DIII 500 V GG E33 - -40°C - Black Ceramic
RS Stock No. 421-508
Mfr. Part No.10-005-07/25A
BrandSIBA
HK$35.528
Each (In a Pack of 5)
units
25 A DII 500 V ac GR E27 50 kA - - - Ceramic
RS Stock No. 377-0465
Mfr. Part No.K200707
BrandMersen
HK$8.186
Each (In a Pack of 5)
units
10 A DII 500 V GG E27 - -40°C - Red Ceramic
RS Stock No. 622-1118
Mfr. Part No.5SE2340
BrandSiemens
HK$14.138
Each (In a Pack of 10)
units
40 A D02 400 V ac GG - 8 kA @ 250 V dc, 50 kA @ 400 V ac -5°C +40°C Black Ceramic
RS Stock No. 395-591
Mfr. Part No.5SB131
BrandSiemens
HK$33.966
Each (In a Pack of 5)
units
6 A DII 500 V ac GG E27 8 kA @ 500 V dc, 50 kA @ 500 V ac -5°C +40°C Green Ceramic
RS Stock No. 377-0651
Mfr. Part No.Y218153
BrandMersen
HK$54.662
Each (In a Pack of 5)
units
63 A DIII 500 V ac GR E33 50 kA -40°C - - Ceramic