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

1 of 999+
  • RS Stock No. 893-8530
Each
£62.71
  • RS Stock No. 782-7962
  • Mfr. Part No. W58-XB1A4A-12
Each
£6.79
  • RS Stock No. 466-0527
  • Mfr. Part No. 13441
Each
£84.16
  • RS Stock No. 219-9556
  • Mfr. Part No. 00940957XXN
Each
£44.56
  • RS Stock No. 227-0738
  • Mfr. Part No. 267448 PFGM-63/2/003-A
Each
£66.44
Better World
  • RS Stock No. 776-2730
  • Mfr. Part No. A9XPH324
Each
£64.47
  • RS Stock No. 232-0088
  • Mfr. Part No. 1SDA054396R1 T5N630 FF PR221-LS 630A
Each
£1,959.54
  • RS Stock No. 782-7988
  • Mfr. Part No. W54-XB1A4A10-20
Each
£3.72
  • RS Stock No. 265-0208
Each
£29.93
  • RS Stock No. 782-0915
  • Mfr. Part No. W58-XB1A4A-5
Each
£5.89
  • RS Stock No. 490-466
  • Mfr. Part No. 236776 PXF-40/4/003-A
Each
£44.32
  • RS Stock No. 230-1077
  • Mfr. Part No. 264741 PLG4-C2/1N
Each
£12.28
  • RS Stock No. 344-5333
  • Mfr. Part No. 1658-G21-02-P10-16A
Each
£4.86
  • RS Stock No. 811-1880
  • Mfr. Part No. 1SL1200A00 65P04X12
Each
£23.18
  • RS Stock No. 390-2448
1 Pack of 10
£17.38
Better World
  • RS Stock No. 746-7649
  • Mfr. Part No. 2CDS251001R0024 S201-C2
Each
£17.26
  • RS Stock No. 868-8914
  • Mfr. Part No. 4411.0011
Each
£13.53
  • RS Stock No. 188-1209
  • Mfr. Part No. 29370
Each
£25.78
Better World
  • RS Stock No. 791-3408
  • Mfr. Part No. A9F54340
Each
£116.29
  • RS Stock No. 863-7773
  • Mfr. Part No. 4 115 55
Each
£77.08
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