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.

51015 Products showing for Fuses & Circuit Breakers

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Better World
  • RS Stock No. 134-6005
  • Mfr. Part No. SEA9TB1001
Each
£14.39(exc. VAT)
  • RS Stock No. 207-394
  • Mfr. Part No. A9D05832
Each
£155.78(exc. VAT)
  • RS Stock No. 478-2330
  • Mfr. Part No. GHV0360505R0001 SZ-BSK5
Each
£2.76(exc. VAT)
  • RS Stock No. 521-2703
Each
£21.32(exc. VAT)
  • RS Stock No. 412-554
  • Mfr. Part No. TDC180-2A
Each (In a Pack of 10)
£0.455(exc. VAT)
  • RS Stock No. 125-1523
  • Mfr. Part No. 1492-SPM3D060
Each
£62.52(exc. VAT)
  • RS Stock No. 563-738
Each (In a Pack of 10)
£0.323(exc. VAT)
  • RS Stock No. 521-2466
Each (In a Pack of 5)
£3.434(exc. VAT)
  • RS Stock No. 218-8730
  • Mfr. Part No. 1492-SPM1C020-N
Each
£42.96(exc. VAT)
  • RS Stock No. 537-1335
  • Mfr. Part No. S506-3.15-R
Each (In a Pack of 10)
£0.182(exc. VAT)
  • RS Stock No. 563-457
1 Pack of 10
£2.78(exc. VAT)
  • RS Stock No. 537-1155
  • Mfr. Part No. S500-3.15-R
1 Pack of 10
£1.85(exc. VAT)
  • RS Stock No. 299-071
  • Mfr. Part No. 1SNF100027R0000
Each
£8.72(exc. VAT)
Better World
  • RS Stock No. 231-9655
  • Mfr. Part No. 2CDS212001R0064 SH202-C 6
1 Box of 1
£40.32(exc. VAT)
  • RS Stock No. 413-305
  • Mfr. Part No. NITD16
Each (In a Pack of 5)
£3.992(exc. VAT)
  • RS Stock No. 242-1055
Each (In a Pack of 5)
£2.648(exc. VAT)
Better World
  • RS Stock No. 232-0270
  • Mfr. Part No. 1SDA068092R1 XT4N 250 TMA 250A FF
Each
£660.25(exc. VAT)
  • RS Stock No. 181-8692
  • Mfr. Part No. CEO50
Each
£7.14(exc. VAT)
  • RS Stock No. 849-5594
  • Mfr. Part No. HHT
Each
£2.86(exc. VAT)
  • RS Stock No. 277-6178
  • Mfr. Part No. 568662
Each
£24.23(exc. VAT)
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