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. 537-1470
  • Mfr. Part No. S506-630-R
Each (In a Pack of 10)
£0.166(exc. VAT)
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  • Mfr. Part No. 5022526.20
Each
£11.38(exc. VAT)
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  • Mfr. Part No. 278877 FAZ-C40/3
Each
£102.17(exc. VAT)
  • RS Stock No. 237-5111
  • Mfr. Part No. 2CSR254101R1104
Each
£335.13(exc. VAT)
  • RS Stock No. 334-986
  • Mfr. Part No. KSA1000DZE43F
Each
£3,648.72(exc. VAT)
  • RS Stock No. 181-8503
  • Mfr. Part No. CEO40
Each (In a Box of 10)
£29.041(exc. VAT)
  • RS Stock No. 260-7819
  • Mfr. Part No. C16S3D
Each
£526.61(exc. VAT)
  • RS Stock No. 169-9492
  • Mfr. Part No. SR-5-1-25A-BK
Each (In a Bag of 200)
£0.465(exc. VAT)
  • RS Stock No. 738-2879
  • Mfr. Part No. 015401.5DR
Each (In a Pack of 10)
£2.309(exc. VAT)
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  • Mfr. Part No. 2CSR255051R1404 DSE201 C40 AC30 - N Blue
Each
£72.12(exc. VAT)
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Each (In a Bag of 100)
£3.163(exc. VAT)
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Each
£12,627.50(exc. VAT)
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Each (In a Pack of 10)
£2.372(exc. VAT)
Better World
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  • Mfr. Part No. A9XAH357
Each
£173.74(exc. VAT)
  • RS Stock No. 255-167
  • Mfr. Part No. 260038 NZM2-XKSA
Each
£22.53(exc. VAT)
  • RS Stock No. 174-0772
  • Mfr. Part No. 1812L110/24DR
Each (In a Pack of 10)
£0.396(exc. VAT)
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Each (In a Pack of 100)
£0.219(exc. VAT)
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  • Mfr. Part No. 0154005.DR
Each (In a Pack of 10)
£2.371(exc. VAT)
  • RS Stock No. 225-5956
  • Mfr. Part No. 2CCF019637R0001 S803PV-SD32
Each
£241.30(exc. VAT)
  • RS Stock No. 270-4821
  • Mfr. Part No. 3VA2563-7HK42-0AA0
Each
£2,778.35(exc. VAT)
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