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

45 of 999+
  • RS Stock No. 895-1662
  • Mfr. Part No. 37208000431
Each (In a Pack of 10)
£0.844
Better World
  • RS Stock No. 527-9526
  • Mfr. Part No. 2CDS251001R0501 S201-D50
Each
£17.64
  • RS Stock No. 153-2962
  • Mfr. Part No. 7TCA083220R0002 CR205
Each (In a Pack of 10)
£9.439
  • RS Stock No. 787-4233
  • Mfr. Part No. 01550320ZXU
Each
£3.08
  • RS Stock No. 789-7794
  • Mfr. Part No. 0001.2509
Each (In a Bag of 10)
£0.548
  • RS Stock No. 864-4324
  • Mfr. Part No. 242209 PLSM-C32-MW
Each
£21.02
  • RS Stock No. 703-8383
  • Mfr. Part No. C10G8
Each (In a Pack of 10)
£0.953
  • RS Stock No. 848-2696
  • Mfr. Part No. ABC-1-R
Each
£2.46
Better World
  • RS Stock No. 527-9560
  • Mfr. Part No. 2CDS253001R0041 S203-D4
Each
£70.51
  • RS Stock No. 787-4378
  • Mfr. Part No. 02981001ZXT
Each
£15.14
  • RS Stock No. 254-554
  • Mfr. Part No. 266626 NZM1-XHB
Each
£90.99
Better World
  • RS Stock No. 151-1206
  • Mfr. Part No. 5SU1356-6KK10
Each
£123.56
  • RS Stock No. 850-7098
  • Mfr. Part No. PDBFS220
Each (In a Pack of 3)
£70.517
  • RS Stock No. 541-4612
  • Mfr. Part No. 0216001.MXP
Each (In a Pack of 10)
£1.165
  • RS Stock No. 213-7586
  • Mfr. Part No. FX0360
Each (In a Pack of 5)
£4.688
  • RS Stock No. 541-2953
  • Mfr. Part No. 0213002.MXP
Each (In a Pack of 10)
£0.921
  • RS Stock No. 210-4736
  • Mfr. Part No. EUBLMC6C30A
Each
£46.41
  • RS Stock No. 418-9630
  • Mfr. Part No. 70-059-61 12.5A
Each (In a Pack of 10)
£0.606
  • RS Stock No. 847-3409
  • Mfr. Part No. 278754 FAZ-C6/2
Each
£63.55
  • RS Stock No. 894-9613
  • Mfr. Part No. FHAC0002ZXJ
Each
£5.67
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