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.

50958 Products showing for Fuses & Circuit Breakers

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  • RS Stock No. 252-5332
  • Mfr. Part No. 66000050
Each (In a Pack of 3)
£9.633
  • RS Stock No. 247-1890
  • Mfr. Part No. 48092
Each
£20,863.30
  • RS Stock No. 201-5439
  • Mfr. Part No. 2909968
Each
£307.70
  • RS Stock No. 260-7855
  • Mfr. Part No. C25B3
Each
£633.15
  • RS Stock No. 275-0070
  • Mfr. Part No. 219-3-1-66-5-8-30
1 Box of 5
£938.96
  • RS Stock No. 178-7897
  • Mfr. Part No. LV426960
Each
£34.61
  • RS Stock No. 825-5946
  • Mfr. Part No. P1MB4PC02
Each
£126.65
  • RS Stock No. 270-3011
  • Mfr. Part No. B228460
Each
£14.73
  • RS Stock No. 207-165
  • Mfr. Part No. KNA100ED4301
Each
£290.33
  • RS Stock No. 254-860
  • Mfr. Part No. 269149 NZMB2-AF50-NA
Each
£424.32
  • RS Stock No. 260-9541
  • Mfr. Part No. C10R45E040
Each
£2,491.51
Better World
  • RS Stock No. 211-0408
  • Mfr. Part No. KNA100DF410
Each
£342.09
Better World
  • RS Stock No. 744-6706
  • Mfr. Part No. AK5PC12
Each
£15.43
  • RS Stock No. 230-0910
  • Mfr. Part No. 239091 FAZ6-B32/2
Each
£51.91
  • RS Stock No. 201-5784
  • Mfr. Part No. 1076468
Each
£361.79
  • RS Stock No. 270-4844
  • Mfr. Part No. 3VA2580-5KQ42-0AA0
Each
£3,781.42
Better World
  • RS Stock No. 209-6835
  • Mfr. Part No. 3VA1150-5MH32-0AA0
Each
£261.95
  • RS Stock No. 235-1606
  • Mfr. Part No. 1SCA022003R9760 OFAW1
Each
£23.65
Better World
  • RS Stock No. 202-7111
  • Mfr. Part No. 5SU1154-6KK16
Each
£142.54
  • RS Stock No. 192-0889
  • Mfr. Part No. 1SDA066821R1
Each
£517.69
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