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

149 of 999+
  • RS Stock No. 200-344
  • Mfr. Part No. 2CDS383103R0324
Each
£142.39
  • RS Stock No. 914-4067
  • Mfr. Part No. 2CSR255051R1255 DSE201 B25 AC30 - N Blue
Each
£69.72
  • RS Stock No. 769-4661
  • Mfr. Part No. 239099 FAZ6-C4/2
Each
£61.97
  • RS Stock No. 787-4353
  • Mfr. Part No. 178.6164.0001
Each
£3.68
  • RS Stock No. 893-8521
  • Mfr. Part No. 50-140-06/50A
Each
£24.27
  • RS Stock No. 124-3045
  • Mfr. Part No. EMCH316 EMCH316
Each
£102.62
  • RS Stock No. 178-7888
  • Mfr. Part No. LV426937
Each
£52.73
  • RS Stock No. 922-7119
  • Mfr. Part No. 278743 FAZ-C0,5/2
Each
£64.16
  • RS Stock No. 611-0147
Each (In a Pack of 10)
£0.554
Better World
  • RS Stock No. 238-3409
  • Mfr. Part No. A9P71602
Each
£34.15
  • RS Stock No. 176-9160
  • Mfr. Part No. P82 100 05100
Each
£4.56
  • RS Stock No. 668-6032
Each (In a Pack of 10)
£0.321
  • RS Stock No. 789-7791
  • Mfr. Part No. 0001.2510
Each (In a Bag of 10)
£0.554
  • RS Stock No. 174-0663
  • Mfr. Part No. 0298060.ZXB
1 Pack of 1
£7.67
Better World
  • RS Stock No. 219-9127
  • Mfr. Part No. M9F22213
Each
£73.21
  • RS Stock No. 225-6150
  • Mfr. Part No. 2CSS200911R0001 S2C-UA 12 VDC
Each
£81.91
  • RS Stock No. 269-3790
  • Mfr. Part No. 0034.6003
Each
£0.40
  • RS Stock No. 395-850
  • Mfr. Part No. 3NA6824
Each (In a Pack of 3)
£5.647
  • RS Stock No. 703-8686
  • Mfr. Part No. 125NHG0B
Each
£8.11
  • RS Stock No. 489-6568
  • Mfr. Part No. 2CDL210001R1060 - PS1/60
Each
£21.64
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