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.

51028 Products showing for Fuses & Circuit Breakers

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  • RS Stock No. 289-1626
  • Mfr. Part No. 2CSR255480R1404
Each
£154.46
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£309.99
Better World
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  • Mfr. Part No. 3RV2021-4BA10-0DA0
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£100.41
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  • Mfr. Part No. 5SJ6513-7KS
Each
£28.04
  • RS Stock No. 783-3267
  • Mfr. Part No. 70-007-33/10A
1 Pack of 10
£5.68
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  • Mfr. Part No. C12E34V160L
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£2,153.63
  • RS Stock No. 922-6964
  • Mfr. Part No. 278527 FAZ-B4/1
Each
£26.05
Better World
  • RS Stock No. 211-9687
  • Mfr. Part No. 5SV3617-6KL
Each
£340.00
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  • Mfr. Part No. ATM-10
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£1.42
  • RS Stock No. 221-1280
  • Mfr. Part No. LV433639
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£120.24
  • RS Stock No. 140-610
  • Mfr. Part No. 2CCS553103R8254
Each
£132.63
  • RS Stock No. 490-292
  • Mfr. Part No. 236404 PXL-B40/3
Each
£76.77
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  • RS Stock No. 125-1415
  • Mfr. Part No. SEA9BN24PEV
Each
£789.72
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  • Mfr. Part No. 3VA9257-0LF10
Each
£63.18
  • RS Stock No. 259-4567
  • Mfr. Part No. 1SDA072814R1
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£3,613.44
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  • Mfr. Part No. 170H3003
Each
£83.30
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  • RS Stock No. 236-6654
  • Mfr. Part No. 1SDA068259R1 XT3N 250 TMG 80A FF
Each
£777.42
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  • RS Stock No. 211-2269
  • Mfr. Part No. A9A26961
Each
£99.07
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  • RS Stock No. 746-7841
  • Mfr. Part No. 2CDS252001R0031 S202-D3
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£51.93
  • RS Stock No. 346-733
  • Mfr. Part No. C100H32EFM
Each
£10,266.86
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