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. 395-771
Mfr. Part No.5SA221
BrandSiemens
TWD146.60
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. 397-509
Mfr. Part No.5SA261
BrandSiemens
TWD146.60
Each (In a Pack of 10)
units
16 A DII 500 V ac GG E16 8 kA @ 500 V dc, 50 kA @ 500 V ac -5°C +40°C Grey Ceramic
RS Stock No. 421-536
Mfr. Part No.10-007-07/50A
BrandSIBA
TWD172.60
Each (In a Pack of 5)
units
50 A DIII 500 V ac GR E33 50 kA - - - Ceramic
RS Stock No. 898-1288
Mfr. Part No.10D27FB
BrandAltech
TWD77.40
Each (In a Pack of 10)
units
- DII - - E27 - - - - -
RS Stock No. 377-0308
Mfr. Part No.D215191
BrandMersen
TWD50.60
Each (In a Pack of 5)
units
50 A D02 400 V ac GG - 50 kA @ 500 V ac -40°C - White Ceramic
RS Stock No. 899-0945
Mfr. Part No.25D27SB
BrandAltech
TWD77.40
Each (In a Pack of 10)
units
25 A DII 500 V ac GG E27 - - - Yellow Glass
RS Stock No. 421-429
Mfr. Part No.10-028-07/35A
BrandSIBA
TWD193.40
Each (In a Pack of 5)
units
35 A D02 440 V ac GR E18 - - - - Ceramic
RS Stock No. 377-0588
Mfr. Part No.T215090
BrandMersen
TWD169.20
Each (In a Pack of 5)
units
16 A DII 500 V ac GR E27 50 kA -40°C - - Ceramic
RS Stock No. 421-491
Mfr. Part No.10-005-07/16A
BrandSIBA
TWD133.40
Each (In a Pack of 5)
units
16 A DII 500 V ac GR E27 50 kA - - - Ceramic
RS Stock No. 396-023
Mfr. Part No.5SC211
BrandSiemens
TWD793.00
Each (In a Pack of 3)
units
80 A DIV 500 V ac GG - 8 kA @ 400 V dc, 50 kA @ 500 V ac -5°C +40°C Silver Ceramic
RS Stock No. 181-8716
Mfr. Part No.25D27
TWD126.00
Each
units
25 A DII 500 V ac GG E27 50 kA @ 500 V ac - - Yellow -
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. 899-9403
Mfr. Part No.40D33SB
BrandAltech
TWD118.80
Each (In a Pack of 5)
units
40 A DIII 500 V ac GG E33 - - - Black Glass
RS Stock No. 181-8647
Mfr. Part No.6D16
TWD291.00
Each
units
6 A DI 500 V ac GG E16 50 kA @ 500 V ac - - Green -
RS Stock No. 898-1275
Mfr. Part No.10D16SB
BrandAltech
TWD97.10
Each (In a Pack of 10)
units
- DI - - E16 - - - - -
RS Stock No. 182-1537
Mfr. Part No.35D33
TWD113.30
Each (In a Box of 25)
units
35 A DIII 500 V ac - E33 50 kA @ 500 V ac - - Black -
RS Stock No. 899-0730
Mfr. Part No.20NZ02GL
BrandAltech
TWD107.60
Each (In a Pack of 10)
units
20 A - 380 V ac - - - - - - Glass
RS Stock No. 377-0257
Mfr. Part No.R223023
BrandMersen
TWD33.00
Each (In a Pack of 5)
units
16 A D01 400 V ac GG - 100 kA -40°C - Grey Ceramic
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. 377-0522
Mfr. Part No.R215088
BrandMersen
TWD47.60
Each (In a Pack of 5)
units
63 A DIII 500 V GG E33 - -40°C - Copper Ceramic