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.

50907 Products showing for Fuses & Circuit Breakers

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  • RS Stock No. 178-1040
  • Mfr. Part No. V1045299 / BTCP42V80/10
Each (In a Pack of 10)
£17.596(exc. VAT)
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  • Mfr. Part No. A9L20600
Each
£583.34(exc. VAT)
  • RS Stock No. 825-5687
  • Mfr. Part No. P1MB2PB32
Each
£44.14(exc. VAT)
  • RS Stock No. 250-734
  • Mfr. Part No. 193542 PXK-B13/1N/03-F
Each
£172.62(exc. VAT)
  • RS Stock No. 232-0206
  • Mfr. Part No. 1SDA066666R1 HTC XT2 2PCS
Each
£19.08(exc. VAT)
  • RS Stock No. 273-2313
  • Mfr. Part No. 140MT-C-UXA
Each
£32.25(exc. VAT)
Better World
  • RS Stock No. 772-1385
  • Mfr. Part No. 5SY4332-8
Each
£83.14(exc. VAT)
  • RS Stock No. 624-0434
  • Mfr. Part No. 278873 FAZ-C16/3
Each
£95.22(exc. VAT)
  • RS Stock No. 259-3604
  • Mfr. Part No. 1SDA071580R1
Each
£9,897.33(exc. VAT)
  • RS Stock No. 417-874
  • Mfr. Part No. 2311207
Each (In a Pack of 5)
£0.80(exc. VAT)
  • RS Stock No. 253-930
  • Mfr. Part No. 236717 PXL-C20/2-DC
Each
£162.41(exc. VAT)
  • RS Stock No. 188-6899
  • Mfr. Part No. P093347
Each (In a Pack of 10)
£4.179(exc. VAT)
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  • Mfr. Part No. A9F90276
Each
£79.07(exc. VAT)
Better World
  • RS Stock No. 155-828
  • Mfr. Part No. 3VA2340-8JP32-0AA0
Each
£2,022.10(exc. VAT)
Better World
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  • Mfr. Part No. BDL36045LU
Each
£333.89(exc. VAT)
  • RS Stock No. 275-0288
  • Mfr. Part No. IUGN66-1-61-10.0
1 Box of 5
£460.44(exc. VAT)
Better World
  • RS Stock No. 236-7463
  • Mfr. Part No. 1SDA067731R1 XT2N 160 TMG 40A FF
Each
£337.89(exc. VAT)
  • RS Stock No. 182-1430
  • Mfr. Part No. 500MMT
Each
£131.71(exc. VAT)
  • RS Stock No. 202-891
  • Mfr. Part No. 2CDS271337R0634
Each
£64.44(exc. VAT)
  • RS Stock No. 250-4737
  • Mfr. Part No. 2CDL210001R3010
Each
£6.28(exc. VAT)
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