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.

50914 Products showing for Fuses & Circuit Breakers

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Better World
  • RS Stock No. 791-3348
  • Mfr. Part No. A9F54220
Each
£73.51(exc. VAT)
  • RS Stock No. 125-1456
  • Mfr. Part No. 1492-SPM1C060
Each
£19.09(exc. VAT)
Better World
  • RS Stock No. 746-8163
  • Mfr. Part No. 2CDS272001R0101 S202M-D10
Each
£46.23(exc. VAT)
  • RS Stock No. 787-4108
  • Mfr. Part No. 0287005.PXCN
1 Pack of 10
£2.35(exc. VAT)
  • RS Stock No. 245-022
  • Mfr. Part No. A9D05816
Each
£155.78(exc. VAT)
  • RS Stock No. 125-1471
  • Mfr. Part No. 1492-SPM2C060
Each
£42.28(exc. VAT)
  • RS Stock No. 602-147
  • Mfr. Part No. NEN106
Each
£48.15(exc. VAT)
Better World
  • RS Stock No. 231-9652
  • Mfr. Part No. 2CDS211001R0044 SH201-C 4
1 Box of 1
£15.23(exc. VAT)
  • RS Stock No. 139-956
  • Mfr. Part No. DEO125
Each
£24.90(exc. VAT)
  • RS Stock No. 231-9589
  • Mfr. Part No. 2CDE282001R0063 E202/63r
1 Box of 1
£47.69(exc. VAT)
Better World
  • RS Stock No. 791-3372
  • Mfr. Part No. A9F54302
Each
£136.29(exc. VAT)
  • RS Stock No. 413-478
  • Mfr. Part No. NSD4
Each (In a Pack of 5)
£6.874(exc. VAT)
  • RS Stock No. 174-0742
  • Mfr. Part No. 0498030.M
Each (In a Pack of 10)
£2.012(exc. VAT)
  • RS Stock No. 563-328
1 Pack of 10
£2.53(exc. VAT)
  • RS Stock No. 849-6452
  • Mfr. Part No. EUC1P2B
Each
£7.91(exc. VAT)
  • RS Stock No. 212-021
  • Mfr. Part No. R9D01606
Each
£65.82(exc. VAT)
  • RS Stock No. 237-5265
Each
£3.43(exc. VAT)
  • RS Stock No. 227-0710
  • Mfr. Part No. 264280 PFGM-40/2/003
Each
£37.22(exc. VAT)
  • RS Stock No. 183-3758
  • Mfr. Part No. 1SLM006500A2212
Each
£35.02(exc. VAT)
  • RS Stock No. 521-2911
Each (In a Pack of 5)
£3.85(exc. VAT)
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