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

70 of 999+
Better World
  • RS Stock No. 776-3433
  • Mfr. Part No. A9F74101
Each
£58.85
  • RS Stock No. 212-239
  • Mfr. Part No. GVAE1TQ
Each
£8.47
  • RS Stock No. 783-3387
  • Mfr. Part No. 70-059-60/12.5A
Each (In a Pack of 10)
£0.573
  • RS Stock No. 622-1089
  • Mfr. Part No. 5SE2325
1 Pack of 10
£10.30
  • RS Stock No. 703-8364
  • Mfr. Part No. C10G0-5
1 Pack of 10
£9.83
  • RS Stock No. 849-5746
  • Mfr. Part No. GMC-600-R
Each
£1.22
Better World
  • RS Stock No. 746-7725
  • Mfr. Part No. 2CDS252001R0204 S202-C20
Each
£42.23
  • RS Stock No. 230-2982
  • Mfr. Part No. A214613
1 Pack of 10
£10.80
  • RS Stock No. 405-9141
  • Mfr. Part No. 2-5700-IG1-P10-DD-000040-10A
Each
£23.00
  • RS Stock No. 922-8752
  • Mfr. Part No. 236305 PKNM-32/1N/C/003-MW
Each
£133.30
  • RS Stock No. 186-6362
1 Kit(s)
£103.21
  • RS Stock No. 412-510
  • Mfr. Part No. TDC11-2A
Each (In a Pack of 10)
£1.684
  • RS Stock No. 703-8380
  • Mfr. Part No. C10G12
Each (In a Pack of 10)
£0.953
  • RS Stock No. 183-3545
  • Mfr. Part No. 236964 PXK-C16/1N/003-A
Each
£65.63
  • RS Stock No. 765-2973
  • Mfr. Part No. HTC-15M
Each (In a Pack of 5)
£1.642
  • RS Stock No. 123-6688
  • Mfr. Part No. 9000-41034-0100400
Each
£130.53
  • RS Stock No. 181-8683
  • Mfr. Part No. AD16
Each
£16.35
  • RS Stock No. 420-050
  • Mfr. Part No. FX0385
1 Pack of 5
£49.70
  • RS Stock No. 711-6521
  • Mfr. Part No. 1SAM201906R1123 PS1-3-2-65
Each
£15.41
  • RS Stock No. 188-7410
  • Mfr. Part No. E211558
Each (In a Pack of 10)
£2.586
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