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.

50915 Products showing for Fuses & Circuit Breakers

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  • RS Stock No. 769-4693
  • Mfr. Part No. 239153 FAZ6-C50/3
Each
£102.99(exc. VAT)
  • RS Stock No. 270-7943
  • Mfr. Part No. 3403.0173.11
Each
£0.77(exc. VAT)
  • RS Stock No. 228-753
  • Mfr. Part No. 50D33R FUSE-D3 50A GR ULTRA RAPID 500 VAC E33
1 Pack of 5
£40.70(exc. VAT)
  • RS Stock No. 263-3734
  • Mfr. Part No. 2565100
Each (In a Pack of 5)
£5.98(exc. VAT)
Better World
  • RS Stock No. 212-1608
  • Mfr. Part No. 2CDS251281R0134
Each
£40.88(exc. VAT)
  • RS Stock No. 210-7001
  • Mfr. Part No. 3NW6224-1
Each (In a Pack of 10)
£6.323(exc. VAT)
Better World
  • RS Stock No. 203-2183
  • Mfr. Part No. 5SY6102-6
Each
£19.01(exc. VAT)
  • RS Stock No. 232-2034
  • Mfr. Part No. 3NW3050-0HG
Each (In a Pack of 10)
£22.452(exc. VAT)
  • RS Stock No. 147-559
  • Mfr. Part No. 3VA5170-6EC31-1AA0
Each
£297.01(exc. VAT)
Better World
  • RS Stock No. 212-8868
  • Mfr. Part No. 5SL6214-7
Each
£50.91(exc. VAT)
Better World
  • RS Stock No. 124-3164
  • Mfr. Part No. 5SY4203-7
Each
£52.61(exc. VAT)
  • RS Stock No. 339-671
  • Mfr. Part No. SE10C106
Each
£26.49(exc. VAT)
  • RS Stock No. 768-6112
  • Mfr. Part No. 5022526.20
Each
£11.38(exc. VAT)
  • RS Stock No. 266-9579
  • Mfr. Part No. 5SY1704-2
Each
£30.66(exc. VAT)
Better World
  • RS Stock No. 214-2052
  • Mfr. Part No. M9D11616
Each
£194.29(exc. VAT)
  • RS Stock No. 738-2936
  • Mfr. Part No. 0451012.MRL
Each (In a Pack of 10)
£1.831(exc. VAT)
  • RS Stock No. 110-7900
  • Mfr. Part No. 56000001009
Each (In a Pack of 10)
£0.663(exc. VAT)
  • RS Stock No. 237-6082
  • Mfr. Part No. 1SDA066462R1 MOD XT1-XT3 480...525VAC
Each
£349.53(exc. VAT)
Better World
  • RS Stock No. 232-2325
  • Mfr. Part No. 5SY6632-6
Each
£109.34(exc. VAT)
  • RS Stock No. 539-1569
  • Mfr. Part No. 1SKP806142C0059 EPB25-306 CUK
Each
£366.58(exc. VAT)
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