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. 421-558
Mfr. Part No.10-002-04/1A
BrandSIBA
TWD130.20
Each (In a Pack of 5)
units
1 A DI 500 V ac GG - gL E16 50 kA - - - Ceramic
RS Stock No. 417-824
Mfr. Part No.2311402
BrandETI
TWD34.80
Each (In a Pack of 5)
units
4 A DI 500 V ac GG - gL E16 - - - Brown Ceramic
RS Stock No. 413-642
Mfr. Part No.2312403
BrandETI
TWD51.80
Each (In a Pack of 5)
units
6 A DII 500 V ac GG - gL E27 - - - Green Ceramic
RS Stock No. 396-156
Mfr. Part No.5SA211
BrandSiemens
TWD109.20
Each (In a Pack of 10)
units
2 A DII 500 V ac GG E16 8 kA @ 500 V dc, 50 kA @ 500 V ac -5°C +40°C Pink Ceramic
RS Stock No. 768-6106
Mfr. Part No.2313402
BrandETI
TWD60.80
Each (In a Pack of 5)
units
50 A DIII 500 V ac GG - gL E33 50 kA @ 500 V ac - - White -
RS Stock No. 899-9721
Mfr. Part No.4D27FB
BrandAltech
TWD84.90
Each (In a Pack of 10)
units
4 A DII 500 V ac - E27 - - - Brown Glass
RS Stock No. 622-1152
Mfr. Part No.5SE2300
BrandSiemens
TWD205.70
Each (In a Pack of 10)
units
100 A D03 400 V ac GG - 8 kA @ 250 V dc, 50 kA @ 400 V ac -5°C +40°C Red Ceramic
RS Stock No. 413-670
Mfr. Part No.2312406
BrandETI
TWD37.00
Each (In a Pack of 5)
units
20 A DII 500 V ac GG - gL E27 - - - Blue Ceramic
RS Stock No. 182-1667
Mfr. Part No.35D33
TWD140.00
Each
units
- DIII - - E33 - - - - -
RS Stock No. 657-1390
Mfr. Part No.5SB111
BrandSiemens
TWD471.00
Each (In a Pack of 5)
units
2 A DII 500 V ac GG E27 8 kA @ 500 V dc, 50 kA @ 500 V ac -5°C +40°C Pink Ceramic
RS Stock No. 395-991
Mfr. Part No.5SC221
BrandSiemens
TWD550.30
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. 900-1585
Mfr. Part No.6D27SC
BrandAltech
TWD232.00
Each (In a Pack of 5)
units
6 A DII 500 V ac GR E27 - - - Green Glass
RS Stock No. 395-771
Mfr. Part No.5SA221
BrandSiemens
TWD109.20
Each (In a Pack of 10)
units
4 A DII 500 V ac GG E16 8 kA @ 500 V dc, 50 kA @ 500 V ac -5°C +40°C Brown Ceramic
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. 899-9765
Mfr. Part No.50D33SC
BrandAltech
TWD535.60
Each (In a Pack of 5)
units
50 A DIII 500 V ac GR E33 - - - White Glass
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
RS Stock No. 898-1279
Mfr. Part No.10D16SC
BrandAltech
TWD240.40
Each (In a Pack of 25)
units
10 A DI 500 V ac GR E16 - - - Red Glass
RS Stock No. 181-8580
Mfr. Part No.10D27Q
TWD2,505.00
1 Box of 25
Box(es)
10 A DII 500 V ac GG E27 50 kA @ 500 V ac - - Red -
RS Stock No. 421-542
Mfr. Part No.10-007-07/63A
BrandSIBA
TWD164.20
Each (In a Pack of 5)
units
63 A DIII 500 V ac GR E33 50 kA - - Grey Ceramic
RS Stock No. 899-3991
Mfr. Part No.35NZ02GL
BrandAltech
TWD178.00
Each
units
35 A - 380 V ac - - - - - - Glass