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. 181-8566
Mfr. Part No.50NZ02
£5.181
Each (In a Box of 10)
Units
50A D02 400V ac gG E18 50 kA @ 400 V ac - - White -
RS Stock No. 202-7123
Mfr. Part No.5SE1320
BrandSiemens
£16.231
Each (In a Pack of 10)
Units
20A D02 400V gR - - - - - -
RS Stock No. 181-8902
Mfr. Part No.16D27Q
£3.04
Each
Units
16A DII 500V ac gG E27 50 kA @ 500 V ac - - Grey -
RS Stock No. 181-8716
Mfr. Part No.25D27
£3.08
Each
Units
25A DII 500V ac gG E27 50 kA @ 500 V ac - - Yellow -
RS Stock No. 202-7216
Mfr. Part No.5SE1350
BrandSiemens
£26.692
Each (In a Pack of 10)
Units
50A D02 400V gR - - - - - -
New
RS Stock No. 216-4806
Mfr. Part No.5SE1363
BrandSiemens
£11.15
Each (In a Pack of 10)
Units
63A D02 400V gR - - - - - -
RS Stock No. 202-7074
Mfr. Part No.5SE1325
BrandSiemens
£16.385
Each (In a Pack of 10)
Units
25A D02 400V gR - - - - - -
RS Stock No. 202-7244
Mfr. Part No.5SE1316
BrandSiemens
£15.538
Each (In a Pack of 10)
Units
16A D01 400V gR - - - - - -
RS Stock No. 181-8474
Mfr. Part No.25D27
£67.16
1 Box of 25
Box(es)
25A DII 500V ac gG E27 50 kA @ 500 V ac - - Yellow -
RS Stock No. 203-3972
Mfr. Part No.5SD460
BrandSiemens
£19.654
Each (In a Pack of 5)
Units
50A DIII 500V gR E33 - - - - -