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.

51028 Products showing for Fuses & Circuit Breakers

585 of 999+
  • RS Stock No. 260-9400
  • Mfr. Part No. C10B34V100
Each
£1,783.78
  • RS Stock No. 876-1942
  • Mfr. Part No. 3404.2472.22
Each (In a Pack of 10)
£0.965
  • RS Stock No. 223-2862
  • Mfr. Part No. 68720250
Each (In a Pack of 3)
£23.933
  • RS Stock No. 218-8697
  • Mfr. Part No. 1492-SPM1B020-N
Each
£35.03
  • RS Stock No. 510-6765
  • Mfr. Part No. 18639
Each
£364.33
  • RS Stock No. 203-863
  • Mfr. Part No. 2CDS272337R0254
Each
£104.14
  • RS Stock No. 201-128
  • Mfr. Part No. 2CDS383001R0277
Each
£163.22
  • RS Stock No. 266-1336
  • Mfr. Part No. 408127
Each
£213.68
  • RS Stock No. 260-7954
  • Mfr. Part No. C25N4TM250
Each
£1,901.16
  • RS Stock No. 179-3007
  • Mfr. Part No. 2495380000
1 Box of 30
£51.21
  • RS Stock No. 182-1480
  • Mfr. Part No. 80KR85
Each (In a Box of 20)
£6.349
  • RS Stock No. 257-466
  • Mfr. Part No. 3VA5322-7EC41-0AA0
Each
£1,641.47
Better World
  • RS Stock No. 179-9446
  • Mfr. Part No. RSLZ2
Each
£5.43
  • RS Stock No. 703-8768
  • Mfr. Part No. 630NHG3B
Each
£25.68
  • RS Stock No. 101-760
Each
£71.38
  • RS Stock No. 866-3435
  • Mfr. Part No. 0031.1661
Each (In a Pack of 50)
£1.015
Better World
  • RS Stock No. 211-0362
  • Mfr. Part No. KBA40ED2300W
Each (In a Pack of 6)
£85.598
Better World
  • RS Stock No. 159-695
  • Mfr. Part No. 3RV2431-4JA10
Each
£235.64
  • RS Stock No. 240-8982
  • Mfr. Part No. 7-1393246-6
Each
£40.11
  • RS Stock No. 226-0614
  • Mfr. Part No. 37214000001
Each (In a Pack of 10)
£0.578
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