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

43 of 999+
  • RS Stock No. 517-6613
  • Mfr. Part No. RXEF030
Each (In a Pack of 10)
£0.366
  • RS Stock No. 922-8724
  • Mfr. Part No. 236205 PKNM-16/1N/B/003-A-MW
Each
£111.48
  • RS Stock No. 789-7781
  • Mfr. Part No. 0001.2507
Each (In a Bag of 10)
£0.56
  • RS Stock No. 684-3585
  • Mfr. Part No. 0916604
Each
£18.05
  • RS Stock No. 611-8955
Each
£123.45
  • RS Stock No. 189-5335
  • Mfr. Part No. H1062699 / CMC102
Each
£13.85
  • RS Stock No. 359-3375
  • Mfr. Part No. FX0454
Each (In a Pack of 5)
£6.592
  • RS Stock No. 541-4684
  • Mfr. Part No. 0215002.MXP
Each (In a Pack of 10)
£0.942
  • RS Stock No. 124-3030
  • Mfr. Part No. EMBP EMBP
Each
£3.03
  • RS Stock No. 415-294
  • Mfr. Part No. TF200
Each
£88.29
  • RS Stock No. 703-2672
  • Mfr. Part No. 8020.0606.G
Each (In a Pack of 10)
£0.968
  • RS Stock No. 304-1048
  • Mfr. Part No. A214107
1 Pack of 10
£13.85
  • RS Stock No. 221-617
  • Mfr. Part No. RS32P
Each
£27.08
  • RS Stock No. 415-121
  • Mfr. Part No. TIA6
Each (In a Pack of 5)
£8.43
  • RS Stock No. 418-710
  • Mfr. Part No. SSD6
Each (In a Pack of 5)
£2.402
  • RS Stock No. 314-4844
  • Mfr. Part No. 50-179-06/30A
Each (In a Pack of 5)
£9.052
  • RS Stock No. 240-6397
  • Mfr. Part No. CCPBR1016AC
Each
£34.64
  • RS Stock No. 226-1033
  • Mfr. Part No. 157.5701.6301
Each
£6.27
  • RS Stock No. 186-3448
  • Mfr. Part No. 2CDS252001R0011 S202-D1
Each
£48.64
Better World
  • RS Stock No. 791-3142
  • Mfr. Part No. A9F53101
Each
£36.74
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