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.

50957 Products showing for Fuses & Circuit Breakers

112 of 999+
  • RS Stock No. 125-1524
  • Mfr. Part No. 1492-SPM3D100
Each
£62.52
  • RS Stock No. 136-0613
  • Mfr. Part No. K1017207 / FR14GR69V50
Each
£15.90
  • RS Stock No. 610-9591
Each (In a Pack of 10)
£0.337
  • RS Stock No. 521-2999
Each (In a Pack of 5)
£9.668
  • RS Stock No. 703-8655
  • Mfr. Part No. 125NHG00B
Each
£6.58
  • RS Stock No. 181-8513
  • Mfr. Part No. EFS200
Each
£21.97
  • RS Stock No. 769-4829
  • Mfr. Part No. 168086 FAZ6-D50/3
Each
£108.13
  • RS Stock No. 202-7229
  • Mfr. Part No. 5SH123
Each (In a Pack of 30)
£2.225
  • RS Stock No. 458-8683
  • Mfr. Part No. 1180-01-2A
Each
£11.29
  • RS Stock No. 830-4259
  • Mfr. Part No. 8020.5068.G
Each (In a Pack of 10)
£0.613
Better World
  • RS Stock No. 209-5975
  • Mfr. Part No. 5SL4325-7
Each
£81.11
  • RS Stock No. 769-3236
  • Mfr. Part No. SR-5-500MA-BK
1 Pack of 10
£8.59
  • RS Stock No. 189-5330
  • Mfr. Part No. H1062676 / CMC83N
Each
£28.06
  • RS Stock No. 396-045
  • Mfr. Part No. 3NC1450
Each (In a Pack of 10)
£22.755
Better World
  • RS Stock No. 131-933
  • Mfr. Part No. 2CDS272001R0165 S202M-B16
Each
£52.80
  • RS Stock No. 174-0871
  • Mfr. Part No. RF2567-000
Each (In a Pack of 20)
£0.216
  • RS Stock No. 769-4618
  • Mfr. Part No. 239219 FAZ6-C20/4
Each
£140.85
  • RS Stock No. 848-4188
  • Mfr. Part No. LP-CC-15
Each
£48.65
  • RS Stock No. 189-5644
  • Mfr. Part No. 2CDS243701R0164
Each
£55.49
Better World
  • RS Stock No. 746-7813
  • Mfr. Part No. 2CDS254001R0254 S204-C25
Each
£155.58
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