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.

50914 Products showing for Fuses & Circuit Breakers

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  • RS Stock No. 759-4776
  • Mfr. Part No. ERBRE0R75V
Each (In a Pack of 10)
£0.205(exc. VAT)
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  • Mfr. Part No. 1SDA071474R1
Each
£5,285.52(exc. VAT)
Better World
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  • Mfr. Part No. 2CDS253280R0254
Each
£58.65(exc. VAT)
Better World
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Each
£184.97(exc. VAT)
  • RS Stock No. 250-4163
  • Mfr. Part No. 1SDA054433R1
Each
£4,132.34(exc. VAT)
Better World
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  • Mfr. Part No. AK5PC34L
Each (In a Pack of 6)
£33.30(exc. VAT)
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  • Mfr. Part No. RXEF375
Each (In a Pack of 10)
£0.782(exc. VAT)
  • RS Stock No. 202-7115
  • Mfr. Part No. 5SD480
Each (In a Pack of 5)
£9.07(exc. VAT)
Better World
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  • Mfr. Part No. A9L65601
Each
£979.21(exc. VAT)
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  • Mfr. Part No. 3VA5217-7EC41-2AA0
Each
£1,335.62(exc. VAT)
  • RS Stock No. 299-074
  • Mfr. Part No. 1SNF100026R0000
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£9.42(exc. VAT)
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£291.36(exc. VAT)
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  • Mfr. Part No. SS-5H-3-15A-BK
Each (In a Bag of 200)
£0.284(exc. VAT)
  • RS Stock No. 243-506
  • Mfr. Part No. 101428 Z-RC/230
Each
£54.51(exc. VAT)
  • RS Stock No. 201-028
  • Mfr. Part No. 2CDS272061R0974
Each
£201.39(exc. VAT)
  • RS Stock No. 250-4564
  • Mfr. Part No. 1SDA054053R1
Each
£1,791.55(exc. VAT)
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  • Mfr. Part No. AK5PA212N2
Each
£65.60(exc. VAT)
  • RS Stock No. 230-1106
  • Mfr. Part No. 109131 PLGC4-C20/1N
Each
£10.30(exc. VAT)
Better World
  • RS Stock No. 209-6837
  • Mfr. Part No. 3VA1150-6EE32-0AA0
Each
£222.42(exc. VAT)
Better World
  • RS Stock No. 210-3349
  • Mfr. Part No. 5SL4120-6
Each
£17.98(exc. VAT)
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