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. 899-0945
Mfr. Part No.25D27SB
BrandAltech
£1.72
Each (In a Pack of 10)
Units
25A DII 500V ac gG E27 - - - Yellow Glass
RS Stock No. 899-9403
Mfr. Part No.40D33SB
BrandAltech
£2.642
Each (In a Pack of 5)
Units
40A DIII 500V ac gG E33 - - - Black Glass
RS Stock No. 900-1576
Mfr. Part No.6D27SB
BrandAltech
£1.72
Each (In a Pack of 10)
Units
6A DII 500V ac gG E27 - - - Green Glass
RS Stock No. 899-3420
Mfr. Part No.2D16SB
BrandAltech
£2.097
Each (In a Pack of 10)
Units
2A DI 500V ac gG E16 - - - Pink Glass
RS Stock No. 899-9734
Mfr. Part No.4D27SC
BrandAltech
£9.10
Each (In a Pack of 5)
Units
4A DII 500V ac gR E27 - - - Brown Glass
RS Stock No. 900-1572
Mfr. Part No.6D27FB
BrandAltech
£1.72
Each (In a Pack of 10)
Units
6A DII 500V ac - E27 - - - Green Glass
RS Stock No. 898-1285
Mfr. Part No.10D27SC
BrandAltech
£5.158
Each (In a Pack of 5)
Units
10A DII 500V ac gR E27 - - - Red Glass
RS Stock No. 899-0920
Mfr. Part No.25D16FB
BrandAltech
£2.159
Each (In a Pack of 10)
Units
25A DI 500V ac - E16 - - - Yellow Glass
RS Stock No. 899-9725
Mfr. Part No.4D27SB
BrandAltech
£1.887
Each (In a Pack of 25)
Units
4A DII 500V ac gG E27 - - - Brown Glass
RS Stock No. 899-0712
Mfr. Part No.20D27SB
BrandAltech
£1.72
Each (In a Pack of 10)
Units
20A DII 500V ac gG E27 - - - Blue Glass
RS Stock No. 899-0936
Mfr. Part No.25D27FB
BrandAltech
£1.72
Each (In a Pack of 10)
Units
25A DII 500V ac - E27 - - - Yellow Glass
RS Stock No. 899-1468
Mfr. Part No.2D27FB
BrandAltech
£1.845
Each (In a Pack of 10)
Units
2A DII 500V ac - E27 - - - Pink Glass
RS Stock No. 899-3427
Mfr. Part No.2D16FB
BrandAltech
£2.097
Each (In a Pack of 10)
Units
2A DI 500V ac - E16 - - - Pink Glass
RS Stock No. 899-0932
Mfr. Part No.25D16SC
BrandAltech
£10.21
Each (In a Pack of 10)
Units
25A DI 500V ac gR E16 - - - Yellow Glass
RS Stock No. 898-3385
Mfr. Part No.16D16SB
BrandAltech
£2.159
Each (In a Pack of 10)
Units
- DI - - E16 - - - - -
RS Stock No. 898-3388
Mfr. Part No.16D16SC
BrandAltech
£5.346
Each (In a Pack of 25)
Units
16A DI 500V ac gR E16 - - - Grey Glass
RS Stock No. 900-1585
Mfr. Part No.6D27SC
BrandAltech
£5.158
Each (In a Pack of 5)
Units
6A DII 500V ac gR E27 - - - Green Glass
RS Stock No. 900-1522
Mfr. Part No.63D33SB
BrandAltech
£2.62
Each
Units
63A DIII 500V ac gG E33 - - - Copper Glass
RS Stock No. 898-1281
Mfr. Part No.10D27SB
BrandAltech
£1.72
Each (In a Pack of 10)
Units
- DII - - E27 - - - - -
RS Stock No. 900-1526
Mfr. Part No.63D33SC
BrandAltech
£11.91
Each (In a Pack of 5)
Units
63A DIII 500V ac gR E33 - - - Copper Glass