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
Fuses - PCB
Fuses - PCB

46580 Products showing for Fuses & Circuit Breakers

78 / 999+
In Stock
Legrand DX Range DNX3 MCB, 32A Curve C, 4.5 kA Breaking Capacity
  • RS Stock No. 731-9459
  • Mfr. Part No. 4 067 77
Each
MYR195.23
Temporarily out of stock
Eaton xEffect - FBSmV RCCB, 63A, 3 Pole, 30mA, Type A, 240/415V ac
  • RS Stock No. 123-524
  • Mfr. Part No. 170218 FBSMV-63/3/003-A
Each
MYR1,115.01
In Stock
Better World
Schneider Electric, ComPact MCCB, Fixed Mount
  • RS Stock No. 221-0943
  • Mfr. Part No. LV429394
Each
MYR798.67
In Stock
Eaton 110A British Standard Fuse, 660V, 72mm
  • RS Stock No. 414-932
  • Mfr. Part No. GSGB110
Each (In a Pack of 5)
MYR364.696
In Stock
Eaton xEffect MCB, 3P, 16A Curve C, 240 → 415V AC, 60V DC, 10 kA Breaking Capacity
  • RS Stock No. 847-3289
  • Mfr. Part No. 102250 FAZ-C16/3-NA
Each
MYR748.49
Temporarily out of stock
ABB F200 RCCB, 40A, 2 Pole, 30mA, 230V ac
  • RS Stock No. 176-9633
  • Mfr. Part No. F202F-40/0.03
Each
MYR3,106.83
In Stock
Socomec 16A Cartridge Fuse, 10 x 38mm
  • RS Stock No. 122-5266
  • Mfr. Part No. 60120016
Each (In a Pack of 10)
MYR5.86
In Stock
Littelfuse 5A F Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 541-4549
  • Mfr. Part No. 0216005.MXP
Each (In a Pack of 10)
MYR4.011
In Stock
ABB F200 RCCB, 100A, 4 Pole, 30mA, Type AC
  • RS Stock No. 538-3855
  • Mfr. Part No. 2CSF204001R1900 F204 AC-100/0,03
Each
MYR1,362.70
In Stock
ABB FH200 RCCB, 40A, 2 Pole, 30mA, Type A, 230V
  • RS Stock No. 186-3459
  • Mfr. Part No. 2CSF202102R1400
Each
MYR502.57
In Stock
Schneider Electric Acti9 iC60 RCCB, 32A, 2 Pole, 30mA, Type C, 220 → 240V ac
  • RS Stock No. 110-285
  • Mfr. Part No. A9D07232
Each
MYR3,569.84
In Stock
Siemens 125A NH Fuse, NH0, 500V ac
  • RS Stock No. 397-442
  • Mfr. Part No. 3NA3032
Each (In a Pack of 3)
MYR105.627
In Stock
Better World
Siemens Sentron 5SY6 MCB, 2P, 6A Curve C, 400V AC, 72V DC, 6 kA Breaking Capacity
  • RS Stock No. 196-3628
  • Mfr. Part No. 5SY6206-7
Each
MYR353.89
In Stock
Wickmann 10A Red Blade Car Fuse, 58V dc
  • RS Stock No. 174-0759
  • Mfr. Part No. 0997010.WXN
Each (In a Pack of 10)
MYR3.079
In Stock
Better World
ABB Compact Home SH200 MCB, 1P, 20A Curve C, 440V AC, 60V DC, 6 kA Breaking Capacity
  • RS Stock No. 539-8245
  • Mfr. Part No. 2CDS211001R0204 SH201-C20
Each
MYR92.03
In Stock
Eaton xEffect MCB, 2P, 3A Curve C, 230 → 400V AC, 6 kA Breaking Capacity
  • RS Stock No. 769-4633
  • Mfr. Part No. 239098 FAZ6-C3/2
Each
MYR463.42
Limited stock
Limitor Thermal Fuse +70°C 2.5 A, 250V ac
  • RS Stock No. 176-9132
  • Mfr. Part No. P82 70 05100
Each
MYR29.32
In Stock
Hinode Electric Co Ltd 315A Bolted Tag Fuse, 82mm
  • RS Stock No. 103-4255
  • Mfr. Part No. 660GH-315
Each
MYR388.57
In Stock
Better World
Schneider Electric Acti 9 4 Phase Busbar, 415V ac, 18mm Pitch
  • RS Stock No. 772-1543
  • Mfr. Part No. A9XPH424
Each (In a Pack of 5)
MYR523.162
Temporarily out of stock
Better World
Schneider Electric, Compact MCCB 3P 40A, Breaking Capacity 50 kA, DIN Rail Mount
  • RS Stock No. 178-8238
  • Mfr. Part No. LV426403
Each
MYR2,237.49
1
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