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

2522 of 999+
  • RS Stock No. 125-018
  • Mfr. Part No. 178879 KLV-SF2-4PR
Each
£37.11
  • RS Stock No. 272-0357
  • Mfr. Part No. 8GK9711-0KK07
Each
£38.49
  • RS Stock No. 191-4621
  • Mfr. Part No. SF-2410FP150T-2
Each (On a Tape of 10)
£0.371
  • RS Stock No. 132-610
  • Mfr. Part No. 184175 IZMX-TF403-2500F-1
Each
£695.04
  • RS Stock No. 186-0322
  • Mfr. Part No. SF-3812SP125T-2
1 Reel of 2500
£1,792.50
  • RS Stock No. 247-2734
  • Mfr. Part No. E213605
1 Box of 10
£28.30
  • RS Stock No. 237-7978
  • Mfr. Part No. 8WA1860
Each (In a Pack of 50)
£0.444
  • RS Stock No. 123-682
  • Mfr. Part No. 170848 FRBMM-B25/2/03-A
Each
£132.53
  • RS Stock No. 341-259
  • Mfr. Part No. C063H35EFM
Each
£8,517.14
  • RS Stock No. 127-435
  • Mfr. Part No. 180621 FRCMM-100/4/03-A-110
Each
£790.02
  • RS Stock No. 255-346
  • Mfr. Part No. 263110 Z-SV-35/3P+N-6TE
Each
£65.14
  • RS Stock No. 243-506
  • Mfr. Part No. 101428 Z-RC/230
Each
£54.51
  • RS Stock No. 103-961
  • Mfr. Part No. 138258 PKE65
Each
£136.80
  • RS Stock No. 270-3031
  • Mfr. Part No. E223702
Each
£8.96
  • RS Stock No. 266-1139
  • Mfr. Part No. 0 592 58
Each
£419.52
  • RS Stock No. 269-676
  • Mfr. Part No. 3VA5285-5ED31-2AA0
Each
£527.81
  • RS Stock No. 122-317
  • Mfr. Part No. LV563325P
Each
£652.37
  • RS Stock No. 123-297
  • Mfr. Part No. 170749 FRBMM-D6/3/01-A
Each
£160.74
  • RS Stock No. 252-3544
  • Mfr. Part No. 39911380
Each
£68.30
  • RS Stock No. 230-0930
  • Mfr. Part No. 177553 FAZ6-C0,25/2
Each
£72.78
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