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

313 of 999+
  • RS Stock No. 270-3083
  • Mfr. Part No. M228447
Each
£14.21(exc. VAT)
  • RS Stock No. 246-2671
  • Mfr. Part No. 2CCS573103R8205
Each
£141.88(exc. VAT)
  • RS Stock No. 245-9229
  • Mfr. Part No. SF-1206F600M-2
Each (On a Tape of 10)
£0.344(exc. VAT)
Better World
  • RS Stock No. 806-7310
  • Mfr. Part No. A9R20216
Each
£288.64(exc. VAT)
  • RS Stock No. 174-0330
  • Mfr. Part No. 2920L700SLPR
1 Reel of 2000
£2,093.42(exc. VAT)
  • RS Stock No. 220-0608
  • Mfr. Part No. 1492-FB3C30
Each (In a Pack of 4)
£47.23(exc. VAT)
  • RS Stock No. 259-5994
  • Mfr. Part No. 1SAM201916R1113
Each
£19.44(exc. VAT)
  • RS Stock No. 735-2847
  • Mfr. Part No. 5ST2135
Each
£20.51(exc. VAT)
  • RS Stock No. 288-4498
  • Mfr. Part No. H7335
Each
£2.50(exc. VAT)
  • RS Stock No. 220-4753
  • Mfr. Part No. 1492-SPM3B320
Each
£62.75(exc. VAT)
  • RS Stock No. 174-0389
  • Mfr. Part No. RF1347-000
1 Reel of 15000
£3,335.61(exc. VAT)
  • RS Stock No. 136-0602
  • Mfr. Part No. K219820 / NH2GG50V315-1
Each
£25.32(exc. VAT)
  • RS Stock No. 412-611
  • Mfr. Part No. TDC11-5A
1 Pack of 10
£45.88(exc. VAT)
  • RS Stock No. 101-742
Each
£138.11(exc. VAT)
  • RS Stock No. 174-0643
  • Mfr. Part No. 04773.15MXEP
Each (In a Pack of 5)
£1.708(exc. VAT)
  • RS Stock No. 240-529
  • Mfr. Part No. 101251 PLI-B16/1
Each
£9.95(exc. VAT)
  • RS Stock No. 825-5895
  • Mfr. Part No. P1MB3PD50
Each
£80.04(exc. VAT)
Better World
  • RS Stock No. 216-4347
  • Mfr. Part No. 5SY7663-7
Each
£353.44(exc. VAT)
  • RS Stock No. 654-702
  • Mfr. Part No. IL0633P36
Each
£465.60(exc. VAT)
Better World
  • RS Stock No. 210-1703
  • Mfr. Part No. 3VA2040-5HN32-0AA0
Each
£532.69(exc. VAT)
Results per page