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

98 of 999+
Better World
  • RS Stock No. 219-8269
  • Mfr. Part No. A9E18032
Each
£17.46
Better World
  • RS Stock No. 187-3280
  • Mfr. Part No. 5SV1316-6KK06
Each
£101.90
  • RS Stock No. 101-785
Each
£42.03
  • RS Stock No. 110-319
  • Mfr. Part No. C10N1TM063
Each
£179.41
Better World
  • RS Stock No. 539-8217
  • Mfr. Part No. 2CDS211001R0104 SH201-C10
Each
£14.75
  • RS Stock No. 489-4455
  • Mfr. Part No. C10M2
Each (In a Pack of 10)
£1.049
  • RS Stock No. 209-9361
Each (In a Pack of 10)
£1.674
  • RS Stock No. 377-0285
  • Mfr. Part No. R219826
Each (In a Pack of 5)
£2.16
  • RS Stock No. 416-972
  • Mfr. Part No. 1110-F112-P1M1-3A
Each
£19.13
Better World
  • RS Stock No. 791-2806
  • Mfr. Part No. A9A26476
Each
£74.26
  • RS Stock No. 852-7137
  • Mfr. Part No. MDL-20-R
Each
£1.83
  • RS Stock No. 537-1161
  • Mfr. Part No. S500-2.5-R
Each (In a Pack of 10)
£0.141
  • RS Stock No. 203-2000
  • Mfr. Part No. 3NA3344
Each (In a Pack of 3)
£25.46
  • RS Stock No. 848-3933
  • Mfr. Part No. KTK-R-12
Each
£33.36
  • RS Stock No. 517-6809
  • Mfr. Part No. RUEF185
Each (In a Pack of 10)
£0.425
  • RS Stock No. 408-404
  • Mfr. Part No. FX0280
Each (In a Pack of 5)
£5.602
Better World
  • RS Stock No. 772-1357
  • Mfr. Part No. 5SY4306-6
Each
£43.06
  • RS Stock No. 768-3766
  • Mfr. Part No. K331094
Each
£21.94
  • RS Stock No. 101-805
Each
£91.58
  • RS Stock No. 418-467
  • Mfr. Part No. CM32F
Each
£21.06
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