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

588 of 999+
  • RS Stock No. 119-406
  • Mfr. Part No. C10M2TM040
Each
£296.81
  • RS Stock No. 626-480
  • Mfr. Part No. 8PQ4000-0BA12
Each
£108.10
Better World
  • RS Stock No. 211-2369
  • Mfr. Part No. M9F22232
Each
£79.84
  • RS Stock No. 260-8201
  • Mfr. Part No. C63F34V570
Each
£6,094.13
  • RS Stock No. 346-623
  • Mfr. Part No. LV426948T
Each
£44.39
Better World
  • RS Stock No. 482-562
  • Mfr. Part No. DF143VC
Each
£52.44
  • RS Stock No. 260-7954
  • Mfr. Part No. C25N4TM250
Each
£1,901.16
  • RS Stock No. 922-7144
  • Mfr. Part No. 279061 FAZ-C16/4
Each
£155.89
  • RS Stock No. 769-4605
  • Mfr. Part No. 239149 FAZ6-C20/3
Each
£86.04
  • RS Stock No. 269-708
  • Mfr. Part No. 3VA5250-5ED41-0AA0
Each
£625.88
Better World
  • RS Stock No. 236-7522
  • Mfr. Part No. 1SDA067842R1 XT2S 160 Ekip I 100A FF
Each
£773.94
  • RS Stock No. 851-1514
  • Mfr. Part No. AGA-5
Each
£2.26
  • RS Stock No. 182-1527
  • Mfr. Part No. AD32
Each (In a Box of 20)
£13.296
  • RS Stock No. 182-1404
  • Mfr. Part No. LPJ-17-1-2SP
Each (In a Box of 10)
£71.623
  • RS Stock No. 203-2014
  • Mfr. Part No. 3NH3430
Each
£44.37
  • RS Stock No. 848-4009
  • Mfr. Part No. FNM-4-1-2
Each (In a Pack of 10)
£12.808
  • RS Stock No. 228-726
  • Mfr. Part No. 3.6WKFHO355
1 Pack of 3
£3,233.31
  • RS Stock No. 259-3423
  • Mfr. Part No. 1SDA071357R1
Each
£7,666.12
  • RS Stock No. 258-300
  • Mfr. Part No. 281562 NZMB1-A125-NA
Each
£772.96
  • RS Stock No. 870-1641
  • Mfr. Part No. 7010.3510
Each (In a Pack of 10)
£2.545
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