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.

51057 Products showing for Fuses & Circuit Breakers

574 of 999+
  • RS Stock No. 610-299
  • Mfr. Part No. 5SY4304-6
Each
£82.33
  • RS Stock No. 122-537
  • Mfr. Part No. LV510723
Each
£332.45
Better World
  • RS Stock No. 238-3457
  • Mfr. Part No. A9R55440
Each
£203.20
  • RS Stock No. 124-782
  • Mfr. Part No. 178810 KLV-36HWP-F
Each
£154.76
  • RS Stock No. 299-952
  • Mfr. Part No. 5SJ4163-7HG41
Each
£120.47
Better World
  • RS Stock No. 210-3509
  • Mfr. Part No. 3VA1010-2ED32-0AA0
Each
£178.69
  • RS Stock No. 341-600
  • Mfr. Part No. BJF46015
Each
£1,307.14
Better World
  • RS Stock No. 124-3178
  • Mfr. Part No. 5SY4350-6
Each
£95.30
  • RS Stock No. 243-209
  • Mfr. Part No. 12BFGHA16
1 Pack of 3
£971.57
  • RS Stock No. 847-3415
  • Mfr. Part No. 278766 FAZ-C63/2
Each
£71.97
  • RS Stock No. 339-227
  • Mfr. Part No. BDL16050
Each
£195.76
  • RS Stock No. 703-8702P
  • Mfr. Part No. 160NHG01B
Each (Supplied in a Box)
£5.24
  • RS Stock No. 200-098
  • Mfr. Part No. 2CDS384001R0317
Each
£234.51
  • RS Stock No. 299-776
  • Mfr. Part No. 5SJ4305-8HG41
Each
£288.76
  • RS Stock No. 787-4110P
  • Mfr. Part No. 0287001.PXCN
Each (Supplied in a Bag)
£0.265
  • RS Stock No. 287-6357
  • Mfr. Part No. 2CDS251103R0164
Each (In a Pack of 5)
£30.32
  • RS Stock No. 174-0216
  • Mfr. Part No. 0298040.ZXB
Each (In a Box of 280)
£4.953
  • RS Stock No. 259-4105
  • Mfr. Part No. 1SDA072212R1
Each
£3,230.82
  • RS Stock No. 101-798
Each
£65.44
  • RS Stock No. 253-795
  • Mfr. Part No. 269221 NZMN2-A50-NA
Each
£518.71
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