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.

50914 Products showing for Fuses & Circuit Breakers

282 of 999+
  • RS Stock No. 849-5774
  • Mfr. Part No. CHCC1DU
Each
£35.39(exc. VAT)
  • RS Stock No. 204-447
  • Mfr. Part No. 2CDS381001R0401
Each
£45.09(exc. VAT)
Better World
  • RS Stock No. 188-4740
  • Mfr. Part No. GV3P80
Each
£405.56(exc. VAT)
  • RS Stock No. 269-3795
  • Mfr. Part No. 0751.0099
Each
£0.22(exc. VAT)
  • RS Stock No. 101-800
Each
£31.53(exc. VAT)
  • RS Stock No. 911-3543
Each (In a Pack of 10)
£0.142(exc. VAT)
  • RS Stock No. 535-4295
  • Mfr. Part No. 2CDS273001R0204 S203M-C20
Each
£79.86(exc. VAT)
  • RS Stock No. 825-5630
  • Mfr. Part No. P1MB1PD06
Each
£17.93(exc. VAT)
  • RS Stock No. 269-8309
  • Mfr. Part No. 3NA3475
Each
£256.12(exc. VAT)
  • RS Stock No. 864-4396
  • Mfr. Part No. 242474 PLSM-C16/3-MW
Each
£85.23(exc. VAT)
  • RS Stock No. 231-9683
  • Mfr. Part No. 2CDS253001R0825 S203-B100 6kA
1 Box of 1
£162.20(exc. VAT)
  • RS Stock No. 232-076
  • Mfr. Part No. 111635 PKPM2-13/2/B/03-A
Each
£227.04(exc. VAT)
  • RS Stock No. 247-2857
  • Mfr. Part No. P214626
1 Box of 10
£42.14(exc. VAT)
  • RS Stock No. 212-015
  • Mfr. Part No. M9R12225
Each
£206.25(exc. VAT)
Better World
  • RS Stock No. 202-7129
  • Mfr. Part No. 5SL6332-7
Each
£65.90(exc. VAT)
  • RS Stock No. 262-770
  • Mfr. Part No. 63NHG1B-690
1 Pack of 3
£25.77(exc. VAT)
  • RS Stock No. 247-1811
  • Mfr. Part No. 33469
Each
£1,947.98(exc. VAT)
Better World
  • RS Stock No. 209-6516
  • Mfr. Part No. 5SL4463-8
Each
£287.57(exc. VAT)
  • RS Stock No. 409-750
  • Mfr. Part No. 1410-L210-L2F1-S02-0.63A
Each
£9.16(exc. VAT)
  • RS Stock No. 229-014
  • Mfr. Part No. CH142DU 2P 14x51 Fuse Holder
1 Pack of 3
£69.10(exc. VAT)
Results per page