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

54 of 999+
  • RS Stock No. 787-4104P
  • Mfr. Part No. 0297010.WXNV
Each (Supplied in a Bag)
£0.191
Better World
  • RS Stock No. 214-2065
  • Mfr. Part No. M9F11210
Each
£78.56
Better World
  • RS Stock No. 746-7602
  • Mfr. Part No. 2CDS253001R0255 S203-B25
Each
£62.50
  • RS Stock No. 247-4223
  • Mfr. Part No. 50-124-06/25A
Each
£11.54
Better World
  • RS Stock No. 791-3366
  • Mfr. Part No. A9F54263
Each
£96.23
  • RS Stock No. 797-6061
  • Mfr. Part No. SF 139 R
Each (In a Pack of 10)
£0.778
  • RS Stock No. 914-4386
  • Mfr. Part No. ATMR1
Each
£18.98
  • RS Stock No. 783-3330
  • Mfr. Part No. 70-007-65/10A
Each (In a Pack of 10)
£0.606
  • RS Stock No. 213-2229
  • Mfr. Part No. 140MP-A-W455
Each
£20.00
  • RS Stock No. 123-2017
  • Mfr. Part No. 0031.1622
Each
£9.74
  • RS Stock No. 395-800
  • Mfr. Part No. 3NA3817
Each (In a Pack of 3)
£6.093
Better World
  • RS Stock No. 211-2284
  • Mfr. Part No. DF2CN06
Each (In a Pack of 10)
£8.504
  • RS Stock No. 515-1052
  • Mfr. Part No. OSZ4 1SCA022530R0200
Each
£6.73
  • RS Stock No. 336-012
  • Mfr. Part No. 106-P30-000040-1A
Each
£14.73
  • RS Stock No. 285-7761
  • Mfr. Part No. 4301.1409
Each
£3.43
Better World
  • RS Stock No. 746-8006
  • Mfr. Part No. 2CDS252001R0537 S202-K32
Each
£67.79
  • RS Stock No. 825-5548
  • Mfr. Part No. P1MB1PB02
Each
£28.86
  • RS Stock No. 911-3414
Each (In a Pack of 10)
£0.357
  • RS Stock No. 183-3666
  • Mfr. Part No. 2CDS244701R0164
Each
£68.28
  • RS Stock No. 182-1599
  • Mfr. Part No. CHPV1IU
Each
£9.73
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