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. 267-3464
  • Mfr. Part No. 70-010-05/0.5A
Each (In a Pack of 5)
£6.298(exc. VAT)
  • RS Stock No. 847-3267
  • Mfr. Part No. 278759 FAZ-C15/2
Each
£60.60(exc. VAT)
  • RS Stock No. 535-5995
  • Mfr. Part No. 2CDS271001R0165 S201M-B16
Each
£18.34(exc. VAT)
  • RS Stock No. 231-9295
  • Mfr. Part No. 1SDA066809R1 XT1B 160 TMD 160A FF
Each
£329.99(exc. VAT)
Better World
  • RS Stock No. 746-7744
  • Mfr. Part No. 2CDS253001R0034 S203-C3
Each
£67.79(exc. VAT)
  • RS Stock No. 408-448A
  • Mfr. Part No. 12932
Each (In a Pack of 50)
£1.223(exc. VAT)
  • RS Stock No. 654-243
  • Mfr. Part No. A9P44625
Each
£53.66(exc. VAT)
  • RS Stock No. 182-1373
  • Mfr. Part No. 170M8557D
Each
£229.73(exc. VAT)
  • RS Stock No. 396-269
  • Mfr. Part No. 3NC1430
Each (In a Pack of 10)
£17.978(exc. VAT)
  • RS Stock No. 250-4384
  • Mfr. Part No. 1SCA022661R8500
1 Box of 3
£20.27(exc. VAT)
  • RS Stock No. 665-091
  • Mfr. Part No. 3NC1430-5
1 Pack of 10
£155.83(exc. VAT)
  • RS Stock No. 654-186
  • Mfr. Part No. EZ9E12MCCU
Each
£58.81(exc. VAT)
  • RS Stock No. 201-6268
  • Mfr. Part No. 1065317
Each
£150.95(exc. VAT)
  • RS Stock No. 288-4936
  • Mfr. Part No. MGP125
Each
£3.34(exc. VAT)
  • RS Stock No. 232-0214
  • Mfr. Part No. 1SDA066805R1 XT1B 160 TMD 63A FF
Each
£204.00(exc. VAT)
Better World
  • RS Stock No. 236-6749
  • Mfr. Part No. 1SDA068444R1 XT4H 160 MA 32 FF
Each
£494.42(exc. VAT)
  • RS Stock No. 177-838
  • Mfr. Part No. 2CCS571001R0045 S401M-B4
Each
£30.41(exc. VAT)
  • RS Stock No. 178-1098
  • Mfr. Part No. V1019263 / BTIA69V50
Each (In a Pack of 10)
£11.11(exc. VAT)
  • RS Stock No. 865-7411
  • Mfr. Part No. 0034.2525
Each (In a Pack of 10)
£0.671(exc. VAT)
  • RS Stock No. 181-8809
  • Mfr. Part No. 160NHG0B
Each
£7.50(exc. VAT)
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