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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  • RS Stock No. 783-3377
  • Mfr. Part No. 70-059-60/6.3A
Each (In a Pack of 10)
£0.573(exc. VAT)
  • RS Stock No. 276-5670
  • Mfr. Part No. P1RD4P40A030
Each
£244.49(exc. VAT)
  • RS Stock No. 397-464
  • Mfr. Part No. 3NA3803
Each (In a Pack of 3)
£6.093(exc. VAT)
  • RS Stock No. 539-3739
  • Mfr. Part No. 4404.0003
Each
£3.00(exc. VAT)
  • RS Stock No. 220-5805
  • Mfr. Part No. 1135752
Each
£49.12(exc. VAT)
Better World
  • RS Stock No. 219-9123
  • Mfr. Part No. M9F22206
Each
£85.17(exc. VAT)
  • RS Stock No. 144-1842
  • Mfr. Part No. 8020.5022.G
Each (In a Bag of 10)
£0.642(exc. VAT)
  • RS Stock No. 782-3695
  • Mfr. Part No. FX0463
Each
£8.33(exc. VAT)
  • RS Stock No. 120-940
  • Mfr. Part No. 168213 FRBDM-B10/2/01-G/A
Each
£158.18(exc. VAT)
  • RS Stock No. 272-7215
  • Mfr. Part No. 106137 PKZ0-XRH-MCC
Each
£65.78(exc. VAT)
  • RS Stock No. 203-084
  • Mfr. Part No. 2CDS244701R0254
Each
£69.67(exc. VAT)
Better World
  • RS Stock No. 746-7933
  • Mfr. Part No. 2CDS254001R0251 S204-D25
Each
£183.95(exc. VAT)
  • RS Stock No. 231-9928
  • Mfr. Part No. 2CSR255151R1064 DSE201 C6 A30
Each
£62.73(exc. VAT)
  • RS Stock No. 630-811
  • Mfr. Part No. G095571Q
1 Box of 10
£8.80(exc. VAT)
  • RS Stock No. 155-976
  • Mfr. Part No. 3VA9987-0MB10
Each
£1,995.21(exc. VAT)
  • RS Stock No. 231-9583
  • Mfr. Part No. 2CCG001235R0001
Each
£388.95(exc. VAT)
  • RS Stock No. 226-0368
  • Mfr. Part No. 7542000
Each
£99.56(exc. VAT)
Better World
  • RS Stock No. 218-1881
  • Mfr. Part No. 3VA9988-0BL30
Each
£61.73(exc. VAT)
  • RS Stock No. 249-3333
  • Mfr. Part No. 1351580000
Each
£80.16(exc. VAT)
  • RS Stock No. 201-6894
  • Mfr. Part No. 2CSR255180R2105 DS201 B10 A100
Each
£211.05(exc. VAT)
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