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

664 of 999+
Better World
  • RS Stock No. 219-8927
  • Mfr. Part No. KSA80EZ5
Each (In a Pack of 10)
£25.604
Better World
  • RS Stock No. 178-7733
  • Mfr. Part No. LV426451
Each
£220.65
  • RS Stock No. 253-957
  • Mfr. Part No. 240792 FAZT-B12/1
Each
£32.06
Better World
  • RS Stock No. 201-2254
  • Mfr. Part No. A9R15491
Each
£545.04
Better World
  • RS Stock No. 211-0458
  • Mfr. Part No. KSA250FA4
Each
£314.66
  • RS Stock No. 358-259
  • Mfr. Part No. KSB250DCZFL21
Each
£79.47
Better World
  • RS Stock No. 211-0443
  • Mfr. Part No. KSA1000AF1
Each
£25.52
  • RS Stock No. 335-015
  • Mfr. Part No. KSA630DZCH43A
Each
£2,504.79
  • RS Stock No. 346-714
  • Mfr. Part No. KSA100EV4254
Each
£433.98
  • RS Stock No. 340-956
  • Mfr. Part No. KSA400DLF42F
Each
£1,680.87
  • RS Stock No. 922-7065
  • Mfr. Part No. 278657 FAZ-C0,5/1N
Each
£74.26
  • RS Stock No. 254-4199
  • Mfr. Part No. PF-JT3-63
Each
£20.74
  • RS Stock No. 246-2610
  • Mfr. Part No. 2CCS572001R1068
Each
£128.12
  • RS Stock No. 260-9423
  • Mfr. Part No. C10F3MA003
Each
£440.25
  • RS Stock No. 174-0886
  • Mfr. Part No. 0467005.NR
Each (In a Pack of 10)
£0.898
  • RS Stock No. 202-842
  • Mfr. Part No. 2CDS384001R0204
Each
£148.17
  • RS Stock No. 260-8200
  • Mfr. Part No. C63F32M500
Each
£4,112.36
Better World
  • RS Stock No. 211-0374
  • Mfr. Part No. KBB40ABD4TW
Each
£90.35
  • RS Stock No. 183-3550
  • Mfr. Part No. 167898 FRCDM-63/4/03-G/B
Each
£852.61
  • RS Stock No. 178-1090
  • Mfr. Part No. K1019254 / BTIA69V10
Each (In a Pack of 10)
£8.994
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