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. 230-2962
  • Mfr. Part No. 3NA6814-4
Each (In a Pack of 3)
£7.79(exc. VAT)
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  • Mfr. Part No. 2CSR255080R3254
Each
£105.69(exc. VAT)
  • RS Stock No. 245-9206
  • Mfr. Part No. SF-0603SPA400R-2
Each
£0.90(exc. VAT)
Better World
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  • Mfr. Part No. A9F94110
Each
£72.26(exc. VAT)
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  • Mfr. Part No. 102090 FAZ-C16/1-NA
Each
£31.19(exc. VAT)
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  • Mfr. Part No. 70-007-33/0.1A
Each (In a Pack of 10)
£0.438(exc. VAT)
Better World
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  • Mfr. Part No. 5SL6101-7
Each
£18.28(exc. VAT)
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Each
£181.12(exc. VAT)
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  • Mfr. Part No. MF-MSMF110/24X-2
Each (Supplied on a Reel)
£0.291(exc. VAT)
  • RS Stock No. 212-203
  • Mfr. Part No. R9F23120
Each
£6.99(exc. VAT)
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  • Mfr. Part No. G1014582 / FR10GR69V30
Each (In a Box of 10)
£7.375(exc. VAT)
Better World
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Each
£126.42(exc. VAT)
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  • Mfr. Part No. C25W4TM125
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£2,857.78(exc. VAT)
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  • Mfr. Part No. 2565100
Each (In a Pack of 5)
£5.98(exc. VAT)
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  • Mfr. Part No. 20-004-13/355A
Each
£18.47(exc. VAT)
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  • Mfr. Part No. 2CDS251001R0805 S201-B80 6kA
1 Box of 1
£55.21(exc. VAT)
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  • Mfr. Part No. 3NA6224
Each (In a Pack of 3)
£21.847(exc. VAT)
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  • Mfr. Part No. 0460002.UR
Each (In a Pack of 5)
£2.668(exc. VAT)
  • RS Stock No. 288-0887
  • Mfr. Part No. 2CDS252001R0278
Each
£61.28(exc. VAT)
  • RS Stock No. 188-4644
Each
£7.68(exc. VAT)
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