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. 377-0689
Mfr. Part No.F201255
BrandMersen
HK$100.01
Each (In a Pack of 5)
units
35 A D02 440 V ac GR E18 - -40°C - - Ceramic
New
RS Stock No. 216-4806
Mfr. Part No.5SE1363
BrandSiemens
HK$135.361
Each (In a Pack of 10)
units
63 A D02 400 V GR - - - - - -
RS Stock No. 377-0673
Mfr. Part No.R200713
BrandMersen
HK$57.234
Each (In a Pack of 5)
units
25 A D02 440 V ac GR E18 - -40°C - - Ceramic
RS Stock No. 377-0601
Mfr. Part No.B216109
BrandMersen
HK$36.38
Each (In a Pack of 5)
units
25 A DII 500 V ac GR E27 50 kA - - - Ceramic
RS Stock No. 421-558
Mfr. Part No.10-002-04/1A
BrandSIBA
HK$36.29
Each (In a Pack of 5)
units
1 A DI 500 V ac GG - gL E16 50 kA - - - Ceramic
RS Stock No. 377-0594
Mfr. Part No.T215596
BrandMersen
HK$34.332
Each (In a Pack of 5)
units
20 A DII 500 V ac GR E27 50 kA -40°C - - Ceramic
RS Stock No. 416-017
Mfr. Part No.2212004
BrandETI
HK$11.162
Each (In a Pack of 5)
units
50 A D02 400 V ac GG E18 8 kA @ 250 V dc, 50 kA @ 400 V ac - - White Ceramic
RS Stock No. 421-542
Mfr. Part No.10-007-07/63A
BrandSIBA
HK$45.788
Each (In a Pack of 5)
units
63 A DIII 500 V ac GR E33 50 kA - - Grey Ceramic
RS Stock No. 202-7145
Mfr. Part No.5SE2320
BrandSiemens
HK$10.371
Each (In a Pack of 10)
units
20 A D02 400 V GR - - - - - -