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. 422-551
Mfr. Part No.10-005-07/20A
BrandSIBA
$9.336
Each (In a Pack of 5)
units
20 A DII 500 V ac GR E27 50 kA - - Grey Ceramic
RS Stock No. 421-536
Mfr. Part No.10-007-07/50A
BrandSIBA
$12.066
Each (In a Pack of 5)
units
50 A DIII 500 V ac GR E33 50 kA - - - Ceramic
RS Stock No. 421-491
Mfr. Part No.10-005-07/16A
BrandSIBA
$9.692
Each (In a Pack of 5)
units
16 A DII 500 V ac GR E27 50 kA - - - Ceramic
RS Stock No. 421-514
Mfr. Part No.10-005-07/30A
BrandSIBA
$9.094
Each (In a Pack of 5)
units
30 A DII 500 V ac GR E27 50 kA - - - Ceramic
RS Stock No. 421-542
Mfr. Part No.10-007-07/63A
BrandSIBA
$8.622
Each (In a Pack of 5)
units
63 A DIII 500 V ac GR E33 50 kA - - Grey Ceramic
RS Stock No. 421-520
Mfr. Part No.10-007-07/35A
BrandSIBA
$12.612
Each (In a Pack of 5)
units
35 A DIII 500 V ac GR E33 50 kA - - - Ceramic
RS Stock No. 421-463
Mfr. Part No.10-005-07/4A
BrandSIBA
$7.03
Each (In a Pack of 5)
units
4 A DII 500 V ac GR E27 50 kA - - - Ceramic
RS Stock No. 421-435
Mfr. Part No.10-028-07/50A
BrandSIBA
$10.932
Each (In a Pack of 5)
units
50 A D02 440 V ac GR E18 - - - - Ceramic
RS Stock No. 421-485
Mfr. Part No.10-005-07/10A
BrandSIBA
$8.458
Each (In a Pack of 5)
units
10 A DII 500 V ac GR E27 50 kA - - Grey Ceramic
RS Stock No. 421-407
Mfr. Part No.10-028-07/20A
BrandSIBA
$10.136
Each (In a Pack of 5)
units
20 A D02 440 V ac GR E18 - - - - Ceramic
RS Stock No. 421-558
Mfr. Part No.10-002-04/1A
BrandSIBA
$6.366
Each (In a Pack of 5)
units
1 A DI 500 V ac GG - gL E16 50 kA - - - Ceramic
RS Stock No. 421-413
Mfr. Part No.10-028-07/25A
BrandSIBA
$12.69
Each (In a Pack of 5)
units
25 A D02 440 V ac GR E18 - - - - Ceramic
RS Stock No. 421-457
Mfr. Part No.10-005-07/2A
BrandSIBA
$11.488
Each (In a Pack of 5)
units
2 A DII 500 V ac GR E27 50 kA - - - Ceramic
RS Stock No. 421-429
Mfr. Part No.10-028-07/35A
BrandSIBA
$9.938
Each (In a Pack of 5)
units
35 A D02 440 V ac GR E18 - - - - Ceramic
RS Stock No. 421-508
Mfr. Part No.10-005-07/25A
BrandSIBA
$8.346
Each (In a Pack of 5)
units
25 A DII 500 V ac GR E27 50 kA - - - Ceramic
RS Stock No. 421-479
Mfr. Part No.10-005-07/6A
BrandSIBA
$9.064
Each (In a Pack of 5)
units
6 A DII 500 V ac GR E27 50 kA - - - Ceramic
RS Stock No. 421-441
Mfr. Part No.10-028-07/63A
BrandSIBA
$10.316
Each (In a Pack of 5)
units
63 A D02 440 V ac GR E18 - - - - Ceramic