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

684 of 999+
  • RS Stock No. 119-358
  • Mfr. Part No. 13972M
Each
£295.56
Better World
  • RS Stock No. 211-2317
  • Mfr. Part No. LA9ZX01243
Each
£85.89
  • RS Stock No. 261-2937
  • Mfr. Part No. 140G-M-TLA23
Each
£187.54
  • RS Stock No. 847-3548
  • Mfr. Part No. 102191 FAZ-D20/2-NA
Each
£87.50
  • RS Stock No. 173-9784
  • Mfr. Part No. 0034.6017
Each (In a Bag of 100)
£0.313
  • RS Stock No. 173-7876
  • Mfr. Part No. 3410.0037.01
Each (In a Bag of 100)
£2.082
  • RS Stock No. 202-905
  • Mfr. Part No. 2CDS272001R0317
Each
£73.88
  • RS Stock No. 250-4068
  • Mfr. Part No. 1SDA054334R1
Each
£1,622.35
  • RS Stock No. 630-861
  • Mfr. Part No. D090508Q
1 Box of 10
£4.80
  • RS Stock No. 260-8201
  • Mfr. Part No. C63F34V570
Each
£6,094.13
  • RS Stock No. 893-6994
  • Mfr. Part No. 0853.1250
Each (In a Pack of 5)
£1.296
  • RS Stock No. 237-6062
  • Mfr. Part No. 1SDA066404R1 UVR-C XT2-XT4 W 60VAC/DC
Each
£132.58
  • RS Stock No. 866-4766
  • Mfr. Part No. 0031.3903
Each (In a Pack of 100)
£2.989
  • RS Stock No. 203-006
  • Mfr. Part No. 2CDS274061R0548
Each
£489.71
Better World
  • RS Stock No. 236-6524
  • Mfr. Part No. 1SDA067986R1 XT2V 160 Ekip LSIG 10A FF
Each
£1,449.05
  • RS Stock No. 478-2188
  • Mfr. Part No. 2CDL200001R3501 SZ-ESK2
Each
£6.23
  • RS Stock No. 259-617
  • Mfr. Part No. 278986 FAZ-D2/3N
Each
£172.62
  • RS Stock No. 269-3781
  • Mfr. Part No. 0001.2508
Each
£0.22
  • RS Stock No. 202-7128
  • Mfr. Part No. 5SJ4330-7HG41
Each
£253.39
Better World
  • RS Stock No. 155-878
  • Mfr. Part No. 3VA2463-0KQ32-0AA0
Each
£2,992.60
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