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. 242-1055
Each (In a Pack of 5)
£2.648(exc. VAT)
Better World
  • RS Stock No. 791-3152
  • Mfr. Part No. A9F53106
Each
£27.39(exc. VAT)
  • RS Stock No. 417-329
  • Mfr. Part No. C55
Each (In a Pack of 5)
£1.862(exc. VAT)
  • RS Stock No. 563-605
Each (In a Pack of 10)
£0.286(exc. VAT)
  • RS Stock No. 242-1061
Each (In a Pack of 5)
£5.864(exc. VAT)
  • RS Stock No. 563-611
1 Pack of 10
£3.85(exc. VAT)
  • RS Stock No. 189-5333
  • Mfr. Part No. P1062705 / CMC101
Each
£5.72(exc. VAT)
Better World
  • RS Stock No. 790-9204
  • Mfr. Part No. A9D31816
Each
£148.47(exc. VAT)
  • RS Stock No. 209-9276
1 Pack of 10
£10.20(exc. VAT)
  • RS Stock No. 413-197
1 Pack of 10
£10.20(exc. VAT)
  • RS Stock No. 183-3540
  • Mfr. Part No. 236948 PXK-B16/1N/003-A
Each
£64.27(exc. VAT)
  • RS Stock No. 288-4617
  • Mfr. Part No. JF 25-200 M10
Each
£6.46(exc. VAT)
  • RS Stock No. 289-1624
  • Mfr. Part No. 2CSM264383R1801
Each
£6.62(exc. VAT)
  • RS Stock No. 184-9031
  • Mfr. Part No. CPB1016C
Each
£4.99(exc. VAT)
  • RS Stock No. 413-484
  • Mfr. Part No. NSD6
1 Pack of 5
£39.44(exc. VAT)
  • RS Stock No. 414-027
Each (In a Pack of 10)
£1.098(exc. VAT)
  • RS Stock No. 787-4101
  • Mfr. Part No. 0287010.PXCN
1 Pack of 10
£2.37(exc. VAT)
  • RS Stock No. 563-479
Each (In a Pack of 10)
£0.278(exc. VAT)
Better World
  • RS Stock No. 791-3388
  • Mfr. Part No. A9F54310
Each
£106.92(exc. VAT)
Better World
  • RS Stock No. 791-3275
  • Mfr. Part No. A9F54101
Each
£36.17(exc. VAT)
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