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.

50958 Products showing for Fuses & Circuit Breakers

162 of 999+
  • RS Stock No. 847-3484
  • Mfr. Part No. 278779 FAZ-D10/2
Each
£61.53
  • RS Stock No. 738-2848P
  • Mfr. Part No. 0452.375MRL
Each (Supplied on a Reel)
£1.902
Better World
  • RS Stock No. 806-7203
  • Mfr. Part No. A9V02763
Each
£256.60
  • RS Stock No. 276-8728
  • Mfr. Part No. A9L16482
Each
£1,301.34
  • RS Stock No. 849-5752
  • Mfr. Part No. MDL-7-1-2-R
Each
£0.96
  • RS Stock No. 490-327
  • Mfr. Part No. 236287 PXL-C13/2
Each
£47.69
  • RS Stock No. 178-8045
  • Mfr. Part No. 278486 PKZM0-12
Each
£115.06
Better World
  • RS Stock No. 201-2260
  • Mfr. Part No. A9DE3616
Each
£195.13
Better World
  • RS Stock No. 221-1146
  • Mfr. Part No. LV429218
Each
£179.53
  • RS Stock No. 202-915
  • Mfr. Part No. 2CDS272061R0318
Each
£224.92
Better World
  • RS Stock No. 202-7129
  • Mfr. Part No. 5SL6332-7
Each
£65.90
  • RS Stock No. 647-8465
  • Mfr. Part No. MF-R030
Each (In a Pack of 10)
£0.244
  • RS Stock No. 783-3260
  • Mfr. Part No. 70-007-33/12.5A
Each (In a Pack of 10)
£0.244
  • RS Stock No. 260-8121
  • Mfr. Part No. C40N3
Each
£774.47
  • RS Stock No. 218-8756
  • Mfr. Part No. 1492-SPM1D020-N
Each
£42.31
  • RS Stock No. 773-3530
  • Mfr. Part No. LPJ-10SP
Each
£62.81
  • RS Stock No. 769-4700
  • Mfr. Part No. 239059 FAZ6-C6/1N
Each
£57.20
  • RS Stock No. 458-8526
  • Mfr. Part No. KTK-5
Each (In a Pack of 5)
£10.71
  • RS Stock No. 811-1896
  • Mfr. Part No. 1SL1203A00 65P18X12
Each
£40.27
  • RS Stock No. 210-2061
  • Mfr. Part No. 3120-N521-H7T1-W01D-1,5A
Each
£37.46
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