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

136 of 999+
  • RS Stock No. 182-1490
  • Mfr. Part No. TFP125
Each (In a Box of 10)
£58.738
Better World
  • RS Stock No. 746-7832
  • Mfr. Part No. 2CDS251001R0081 S201-D8
Each
£17.22
  • RS Stock No. 228-820
  • Mfr. Part No. STD20
1 Pack of 20
£134.11
  • RS Stock No. 852-6973
  • Mfr. Part No. HTB-62I-R
Each
£5.10
  • RS Stock No. 202-915
  • Mfr. Part No. 2CDS272061R0318
Each
£224.92
  • RS Stock No. 250-4512
  • Mfr. Part No. 1SDA038316R1
Each
£375.38
  • RS Stock No. 541-4246A
  • Mfr. Part No. 0217.050MXP
Each (In a Pack of 100)
£0.804
  • RS Stock No. 136-0572
  • Mfr. Part No. HP10M20
Each
£7.85
  • RS Stock No. 630-889
  • Mfr. Part No. V090546Q
1 Box of 10
£5.59
  • RS Stock No. 167-9219
  • Mfr. Part No. 7189.0009
Each
£177.60
  • RS Stock No. 532-5124
  • Mfr. Part No. 278807 FAZ-S3/2
Each
£74.76
  • RS Stock No. 849-6418
  • Mfr. Part No. TPN08
Each
£129.97
  • RS Stock No. 247-2701
  • Mfr. Part No. B222204
1 Box of 10
£18.37
  • RS Stock No. 782-0921
  • Mfr. Part No. W28-XQ1A-7
Each
£3.83
  • RS Stock No. 221-3635
Each (In a Pack of 5)
£9.502
  • RS Stock No. 228-612
  • Mfr. Part No. 6D27R FUSE-D2 6A F GR 500VAC E27
1 Pack of 5
£21.20
  • RS Stock No. 416-691
  • Mfr. Part No. AF1X0038021F2D
Each
£19.93
  • RS Stock No. 787-4306
  • Mfr. Part No. 35421000029
Each (In a Pack of 5)
£1.78
Better World
  • RS Stock No. 746-7882
  • Mfr. Part No. 2CDS252001R0501 S202-D50
Each
£48.09
  • RS Stock No. 458-8677
  • Mfr. Part No. 1180-01-1A
Each
£11.29
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