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.

50973 Products showing for Fuses & Circuit Breakers

61 of 999+
  • RS Stock No. 219-6153
  • Mfr. Part No. 0154007.DR
Each (In a Pack of 10)
£1.001
  • RS Stock No. 230-1095
  • Mfr. Part No. 264690 PLG6-C2/1N
Each
£15.37
Better World
  • RS Stock No. 539-8352
  • Mfr. Part No. 2CDS213001R0164 SH203-C16
Each
£55.91
  • RS Stock No. 188-7296
  • Mfr. Part No. L200754
Each (In a Pack of 10)
£2.263
  • RS Stock No. 186-3469
  • Mfr. Part No. 2CSS245102R0064
Each
£17.98
  • RS Stock No. 167-7926
  • Mfr. Part No. 0001.1009
Each (In a Pack of 10)
£0.557
Better World
  • RS Stock No. 219-9052
  • Mfr. Part No. DF2CN04
Each (In a Pack of 10)
£8.504
  • RS Stock No. 541-4230A
  • Mfr. Part No. 0218.500MXP
Each (In a Pack of 100)
£0.231
  • RS Stock No. 789-7848
  • Mfr. Part No. 0034.1524
Each (In a Bag of 10)
£0.311
Better World
  • RS Stock No. 746-7756
  • Mfr. Part No. 2CDS253001R0064 S203-C6
Each
£63.36
  • RS Stock No. 228-672
  • Mfr. Part No. C14G50
1 Pack of 10
£13.78
  • RS Stock No. 229-111
  • Mfr. Part No. C14G6
1 Pack of 10
£16.40
  • RS Stock No. 541-4583
  • Mfr. Part No. 0218.400MXP
Each (In a Pack of 10)
£1.172
  • RS Stock No. 181-8557
  • Mfr. Part No. 160NHG00B-660
1 Box of 3
£16.04
  • RS Stock No. 257-774
  • Mfr. Part No. 291484 EVG-16/2PHAS/10MODUL/HI
Each
£11.82
  • RS Stock No. 244-967
  • Mfr. Part No. SE125A6
Each
£111.96
Better World
  • RS Stock No. 790-9193
  • Mfr. Part No. A9D31806
Each
£148.47
  • RS Stock No. 339-671
  • Mfr. Part No. SE10C106
Each
£26.49
  • RS Stock No. 125-1428
  • Mfr. Part No. 1492-SPM2B010
Each
£42.64
  • RS Stock No. 783-3201
  • Mfr. Part No. 70-007-33/0.1A
Each (In a Pack of 10)
£0.438
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