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

686 of 999+
  • RS Stock No. 517-7240
  • Mfr. Part No. MICROSMD050F-2
Each (In a Pack of 20)
£0.28
  • RS Stock No. 200-399
  • Mfr. Part No. 1STQ008222A0000
Each
£200.20
  • RS Stock No. 260-8236
  • Mfr. Part No. C63R36M500
Each
£4,974.28
  • RS Stock No. 213-2584
  • Mfr. Part No. 5ST3770-2
Each (In a Pack of 10)
£94.354
Better World
  • RS Stock No. 260-601
  • Mfr. Part No. 3VA6325-5HN41-0AA0
Each
£1,856.41
  • RS Stock No. 203-654
  • Mfr. Part No. 2CDS274337R0317
Each
£257.10
  • RS Stock No. 852-7398
  • Mfr. Part No. JT60030
Each
£33.28
  • RS Stock No. 375-9705
  • Mfr. Part No. E201346
Each
£22.00
  • RS Stock No. 260-9481
  • Mfr. Part No. C10H4TM063
Each
£768.09
  • RS Stock No. 340-980
  • Mfr. Part No. A9C61216
Each
£229.16
  • RS Stock No. 764-9536
Each (In a Pack of 10)
£0.596
  • RS Stock No. 200-6147
  • Mfr. Part No. A9PE4610
Each
£112.15
  • RS Stock No. 122-418
  • Mfr. Part No. LV510859
Each
£61.85
Better World
  • RS Stock No. 271-9428
  • Mfr. Part No. 3VA1180-5GD42-0AA0
Each
£276.80
  • RS Stock No. 767-5137
Each (In a Pack of 10)
£0.478
  • RS Stock No. 273-2388
  • Mfr. Part No. 140MT-D-PEC23
Each
£14.07
Better World
  • RS Stock No. 790-7399
  • Mfr. Part No. A9C62440
Each
£656.11
Better World
  • RS Stock No. 221-0937
  • Mfr. Part No. LV429384
Each
£110.06
Better World
  • RS Stock No. 213-1120
  • Mfr. Part No. 3RT2916-1PA2
Each
£38.90
  • RS Stock No. 231-8926
  • Mfr. Part No. 1080T3PU3
Each
£742.66
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