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.

50973 Products showing for Fuses & Circuit Breakers

52 of 999+
  • RS Stock No. 243-837
  • Mfr. Part No. 073146 U-PKZ0(240V60HZ)
Each
£38.10
  • RS Stock No. 787-4413P
  • Mfr. Part No. 0298125.ZXEH
Each (Supplied in a Bag)
£5.85
  • RS Stock No. 418-978
  • Mfr. Part No. OSD80
Each
£18.17
  • RS Stock No. 849-6594
  • Mfr. Part No. EUC3P20C
Each
£22.40
  • RS Stock No. 174-0667
  • Mfr. Part No. 01550120ZXU
Each (In a Pack of 5)
£0.848
  • RS Stock No. 176-9081
  • Mfr. Part No. P82 45 05100
Each
£4.56
  • RS Stock No. 124-3024
  • Mfr. Part No. EMBH120 EMBH120
Each
£24.15
Better World
  • RS Stock No. 527-9447
  • Mfr. Part No. 2CDS251001R0041 S201-D4
Each
£17.59
  • RS Stock No. 517-6562
  • Mfr. Part No. RXEF010
Each (In a Pack of 10)
£0.341
  • RS Stock No. 413-686
  • Mfr. Part No. 2312407
Each (In a Pack of 5)
£0.982
  • RS Stock No. 376-5615
Each (In a Pack of 10)
£1.082
  • RS Stock No. 265-0207
Each
£29.93
  • RS Stock No. 893-8506
  • Mfr. Part No. 50-140-06/20A
Each
£20.24
  • RS Stock No. 914-4345
  • Mfr. Part No. ATM1
Each
£17.66
  • RS Stock No. 395-872
  • Mfr. Part No. 3NA6836
Each (In a Pack of 3)
£7.487
Better World
  • RS Stock No. 746-7876
  • Mfr. Part No. 2CDS252001R0251 S202-D25
Each
£46.97
  • RS Stock No. 139-912
  • Mfr. Part No. NITD32M50
Each (In a Pack of 5)
£7.514
  • RS Stock No. 486-883
  • Mfr. Part No. 236033 PXL-B16/1
Each
£2.99
  • RS Stock No. 337-7921
  • Mfr. Part No. 155.0892.5751
Each
£8.67
  • RS Stock No. 111-7804
  • Mfr. Part No. SWTC-228-3535
Each (In a Pack of 10)
£1.646
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