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.

50973 Products showing for Fuses & Circuit Breakers

80 of 999+
  • RS Stock No. 769-0032
  • Mfr. Part No. 0313002.HXP
Each (In a Pack of 10)
£0.906
Better World
  • RS Stock No. 238-3415
  • Mfr. Part No. A9P71625
Each
£29.81
Better World
  • RS Stock No. 209-4897
  • Mfr. Part No. 3VA1112-6ED32-0AA0
Each
£350.85
Better World
  • RS Stock No. 231-9727
  • Mfr. Part No. 2CDS272001R0321 S202M D 32A - 15 KA
1 Box of 1
£46.23
  • RS Stock No. 228-675
  • Mfr. Part No. C14M2 CYLINDRICAL FUSE 14 x 51 2A AM 690V AC
1 Pack of 10
£18.77
  • RS Stock No. 180-6111
  • Mfr. Part No. 0 130 10
Each (In a Box of 10)
£1.818
  • RS Stock No. 246-2480
  • Mfr. Part No. 2CCS571001R0205 S401M-B20
Each
£23.13
  • RS Stock No. 174-0829
  • Mfr. Part No. RF1346-000
Each (In a Pack of 20)
£0.144
  • RS Stock No. 203-093
  • Mfr. Part No. 2CDS252001R0578
Each
£115.65
  • RS Stock No. 284-2369
Each
£34.35
  • RS Stock No. 922-8702
  • Mfr. Part No. 236067 PKNM-10/1N/B/003-MW
Each
£133.30
  • RS Stock No. 725-8026
  • Mfr. Part No. 0213.250MXP
Each (In a Bag of 10)
£1.289
Better World
  • RS Stock No. 772-1296
  • Mfr. Part No. 5SY4206-7
Each
£62.20
  • RS Stock No. 173-7909
  • Mfr. Part No. 8020.0605.G
1 Box of 1000
£539.11
  • RS Stock No. 563-497
Each (In a Pack of 10)
£0.358
Better World
  • RS Stock No. 202-7255
  • Mfr. Part No. 5SL4110-7
Each
£17.98
  • RS Stock No. 384-061
  • Mfr. Part No. 3101.0025
Each (In a Pack of 5)
£3.072
  • RS Stock No. 820-7234
  • Mfr. Part No. 0FLQ006.T
Each
£18.57
  • RS Stock No. 922-8673
  • Mfr. Part No. 235440 PFIM-40/4/01-A-MW
Each
£167.29
  • RS Stock No. 186-6356
1 Kit(s)
£86.14
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