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

308 of 999+
  • RS Stock No. 339-304
  • Mfr. Part No. SE10B120
Each
£24.02(exc. VAT)
  • RS Stock No. 238-4013
  • Mfr. Part No. E220965
Each
£36.91(exc. VAT)
Better World
  • RS Stock No. 238-3280
  • Mfr. Part No. A9DK1610
Each
£180.44(exc. VAT)
  • RS Stock No. 270-3095
  • Mfr. Part No. P232497
Each
£8.82(exc. VAT)
Better World
  • RS Stock No. 212-0146
  • Mfr. Part No. A9F95320
Each
£320.74(exc. VAT)
Better World
  • RS Stock No. 746-7882
  • Mfr. Part No. 2CDS252001R0501 S202-D50
Each
£48.09(exc. VAT)
Better World
  • RS Stock No. 608-8214
  • Mfr. Part No. GV2G254
Each
£12.18(exc. VAT)
Better World
  • RS Stock No. 219-9113
  • Mfr. Part No. M9F21310
Each
£119.69(exc. VAT)
Better World
  • RS Stock No. 243-6171
  • Mfr. Part No. 5SU1324-7FP32
Each
£260.28(exc. VAT)
  • RS Stock No. 240-8926
  • Mfr. Part No. 1423674-9
Each (In a Tray of 100)
£4.619(exc. VAT)
  • RS Stock No. 261-912
  • Mfr. Part No. ICS-R16D024B200 Z-R23/16-20
1 Pack of 2
£49.86(exc. VAT)
  • RS Stock No. 243-508
  • Mfr. Part No. 101483 BBA4/2TS-L
Each
£34.95(exc. VAT)
  • RS Stock No. 246-273
  • Mfr. Part No. 132416 FAZ-B2/1-NA
1 Pack of 2
£42.13(exc. VAT)
Better World
  • RS Stock No. 806-7411
  • Mfr. Part No. SEA9BN16PEV
Each
£535.32(exc. VAT)
  • RS Stock No. 181-8560
  • Mfr. Part No. 100NHG00B
1 Box of 3
£12.42(exc. VAT)
  • RS Stock No. 767-5018
Each (In a Pack of 10)
£0.35(exc. VAT)
  • RS Stock No. 852-7572
  • Mfr. Part No. 170M1370
Each
£98.56(exc. VAT)
  • RS Stock No. 191-9448
  • Mfr. Part No. 2CDS252001R0021 S202-D2
Each
£48.58(exc. VAT)
  • RS Stock No. 732-0092
  • Mfr. Part No. 4 115 56
Each
£217.28(exc. VAT)
  • RS Stock No. 273-2293
  • Mfr. Part No. 140MT-C-M3
Each
£11.24(exc. VAT)
Results per page