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. 377-0516
Mfr. Part No.K214576
BrandMersen
SGD2.30
Each (In a Pack of 5)
units
50 A DIII 500 V GG E33 - -40°C - White Ceramic
RS Stock No. 377-0617
Mfr. Part No.Y216612
BrandMersen
SGD8.854
Each (In a Pack of 5)
units
30 A DII 500 V ac GR E27 50 kA -40°C - - Ceramic
RS Stock No. 181-8902
Mfr. Part No.16D27Q
SGD6.30
Each
units
16 A DII 500 V ac GG E27 50 kA @ 500 V ac - - Grey -
RS Stock No. 421-536
Mfr. Part No.10-007-07/50A
BrandSIBA
SGD8.198
Each (In a Pack of 5)
units
50 A DIII 500 V ac GR E33 50 kA - - - Ceramic
RS Stock No. 377-0667
Mfr. Part No.H222923
BrandMersen
SGD12.248
Each (In a Pack of 5)
units
20 A D02 440 V ac GR E18 - -40°C - - Ceramic
RS Stock No. 202-7226
Mfr. Part No.5SD470
BrandSiemens
SGD17.538
Each (In a Pack of 5)
units
63 A DIII 500 V GR E33 - - - - -
RS Stock No. 417-868
Mfr. Part No.2311406
BrandETI
SGD1.286
Each (In a Pack of 5)
units
20 A DI 500 V ac GG - gL E16 - - - Blue Ceramic
RS Stock No. 396-023
Mfr. Part No.5SC211
BrandSiemens
SGD25.247
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