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

223 of 999+
  • RS Stock No. 245-144
  • Mfr. Part No. A9D56832
Each
£155.78(exc. VAT)
  • RS Stock No. 769-3375
  • Mfr. Part No. SS-5F-1A-BK
Each (In a Pack of 5)
£0.926(exc. VAT)
  • RS Stock No. 289-1620
  • Mfr. Part No. 2CSF204568R1400
Each
£465.52(exc. VAT)
Better World
  • RS Stock No. 247-2142
  • Mfr. Part No. MGPCM12L
Each
£1,007.20(exc. VAT)
  • RS Stock No. 489-4455
  • Mfr. Part No. C10M2
Each (In a Pack of 10)
£1.049(exc. VAT)
  • RS Stock No. 173-7926
  • Mfr. Part No. 3413.0329.22
1 Reel of 1000
£235.26(exc. VAT)
  • RS Stock No. 396-124
  • Mfr. Part No. 3NA6812
Each (In a Pack of 3)
£5.647(exc. VAT)
  • RS Stock No. 646-806
  • Mfr. Part No. 568679
Each
£11.99(exc. VAT)
  • RS Stock No. 247-2725
  • Mfr. Part No. D217169
1 Box of 10
£13.85(exc. VAT)
  • RS Stock No. 599-486
  • Mfr. Part No. 1SAM150000R1009
Each
£178.49(exc. VAT)
  • RS Stock No. 304-2079
  • Mfr. Part No. M300046
Each
£118.04(exc. VAT)
  • RS Stock No. 312-3651
  • Mfr. Part No. GB2CB08
Each
£27.45(exc. VAT)
  • RS Stock No. 221-3693
Each (In a Pack of 10)
£3.557(exc. VAT)
  • RS Stock No. 265-0209
Each
£28.37(exc. VAT)
  • RS Stock No. 254-182
  • Mfr. Part No. 240994 FAZT-B1/1N
Each
£64.97(exc. VAT)
  • RS Stock No. 414-689
  • Mfr. Part No. TIA32M63
Each (In a Pack of 5)
£12.586(exc. VAT)
  • RS Stock No. 229-1426P
  • Mfr. Part No. 0456060.DRSDE
Each (Supplied on a Reel)
£5.35(exc. VAT)
  • RS Stock No. 276-8718
  • Mfr. Part No. A9D07216
Each
£472.92(exc. VAT)
  • RS Stock No. 139-906
  • Mfr. Part No. NITD32M40
1 Pack of 5
£50.90(exc. VAT)
  • RS Stock No. 231-9965
  • Mfr. Part No. 2CSR275189R1324 DS201 M C32 A30 110V
1 Box of 1
£153.83(exc. VAT)
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