Fuses & Circuit Breakers

Although they work in different ways, fuses and circuit breakers broadly have the same purpose; to protect electrical appliances and electrical circuits from short circuits, and excessive current (called overcurrent or overload).

Fuses

Fuses are relatively low cost electrical safety devices. If too much current enters the circuit, the fuse will burn out (sometimes called blowing out). When the fuse blows out it breaks the circuit. This protects the attached devices and allows you to touch devices without being electrocuted. When the fuse blows, it must be replaced before using the device or appliance again.

Circuit breakers

Circuit breakers work in a similar way to fuses, but they are resettable. Once a fault is detected (this is typically a short circuit or an excessive amount of current flowing through the circuit) the circuit breaker will interrupt the flow of current. When the circuit breaker trips, it's simply a case of flicking a switch to reset the circuit breaker. As soon as you've reset the circuit breaker, it is ready to use again.

Circuit Breakers
Circuit Breakers
Earth & Lightning Protection
Earth & Lightning Protection
Fuse Holders & Accessories
Fuse Holders & Accessories
Fuses
Fuses

46578 Products showing for Fuses & Circuit Breakers

237 / 999+
Temporarily out of stock
ABB System Pro M Compact S200 M UC MCB, 1P, 20A Curve B, 230V AC, 220V DC, 10 kA Breaking Capacity
  • RS Stock No. 200-978
  • Mfr. Part No. 2CDS271061R0205
Each
MYR837.23
Temporarily out of stock
Eaton 6A Cartridge Fuse, 14 x 85mm
  • RS Stock No. 229-167
  • Mfr. Part No. AAO6
1 Pack of 20
MYR1,218.35
In Stock
Better World
Schneider Electric Acti 9 iC60N MCB, 2P, 4A Curve C, 400V AC, 125V DC, 6 kA Breaking Capacity
  • RS Stock No. 734-9220
  • Mfr. Part No. A9F74204
Each
MYR982.07
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 1kA, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 346-737
  • Mfr. Part No. C100L350FM
Each
MYR82,820.94
Temporarily out of stock
ABB S800 Separating Neutral for use with S800
  • RS Stock No. 140-298
  • Mfr. Part No. 2CCS800900R0061
Each
MYR642.30
In Stock
ETI 2A DI Diazed Fuse, E16 Thread Size, gG - gL, 500V ac
  • RS Stock No. 417-818
  • Mfr. Part No. 2311401
Each (In a Pack of 5)
MYR5.784
In Stock
Endress+Hauser Single Phase Surge Arrester, 2.5kA, 400V (Volts), DIN Rail Mount, Panel Mount Mount
  • RS Stock No. 267-9374
  • Mfr. Part No. HAW562-AAB
Each
MYR494.38
Temporarily out of stock
Schneider Electric 160A Neutral Link for DIN Fuses
  • RS Stock No. 357-346
  • Mfr. Part No. LV481913
Each
MYR205.48
Temporarily out of stock
Siemens, SENTRON MCCB 3P 630A, Breaking Capacity 25 kA, Fixed Mount
  • RS Stock No. 270-4801
  • Mfr. Part No. 3VA2563-5HK32-0AA0
Each
MYR15,626.12
In Stock
Littelfuse Blade Fuse Puller
  • RS Stock No. 216-7919
  • Mfr. Part No. 00970019X
Each
MYR65.70
In Stock
Schneider Electric, ComPacT NSX MCCB 4P 160A, Fixed Mount
  • RS Stock No. 254-6346
  • Mfr. Part No. C16F4
Each
MYR3,138.00
In Stock
RS PRO 15A Blue Blade Car Fuse, 32V dc
  • RS Stock No. 563-750
Each (In a Pack of 10)
MYR2.228
Temporarily out of stock
Siemens SENTRON Electronic Circuit Breaker 250A 3VA2, 3 channels
  • RS Stock No. 157-350
  • Mfr. Part No. 3VA2225-6KQ32-0KA0
Each
MYR16,139.19
Temporarily out of stock
Siemens 8GB Enclosure for use with Screw terminal
  • RS Stock No. 211-6093
  • Mfr. Part No. 8GB5024-0KM
Each
MYR490.58
Temporarily out of stock
Better World
ABB Emax2 Electronic Circuit Breaker 4kA Ekip G Hi-Touch LSIG, 3 channels
  • RS Stock No. 259-3303
  • Mfr. Part No. 1SDA071210R1
Each
MYR128,702.81
In Stock
20A Fuse Holder for 55 x 79mm Fuse, 1P, 690V
  • RS Stock No. 261-964
  • Mfr. Part No. RS20H
1 Pack of 10
MYR1,017.83
In Stock
Littelfuse 2A Grey Blade Car Fuse, 32V dc
  • RS Stock No. 787-4126P
  • Mfr. Part No. 0287002.PXCN
Each (Supplied in a Bag)
MYR1.615
In Stock
Eaton 12A T Cartridge Fuse, 10 x 38mm
  • RS Stock No. 182-1810
  • Mfr. Part No. FNQ-12
Each
MYR290.71
Temporarily out of stock
ABB System Pro M Compact S300P MCB, 1P, 500mA, Type Z, 240V AC, 72V DC, 100 kA Breaking Capacity
  • RS Stock No. 201-286
  • Mfr. Part No. 2CDS381001R0158
Each
MYR812.28
Temporarily out of stock
Schneider Electric RCBO, 20A Current Rating, 2P Poles, 30mA Trip Sensitivity, Type C, Acti9 Range
  • RS Stock No. 130-872
  • Mfr. Part No. A9D07225
Each
MYR3,534.63
1
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