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.

51057 Products showing for Fuses & Circuit Breakers

625 of 999+
Better World
  • RS Stock No. 202-7246
  • Mfr. Part No. 5SL6316-7
Each
£32.95
Better World
  • RS Stock No. 237-3329
  • Mfr. Part No. 2CDS254001R0558 S204 Z 40A - 10 KA
Each
£218.07
  • RS Stock No. 703-8752
  • Mfr. Part No. 315NHG03B
Each
£17.14
  • RS Stock No. 229-187
  • Mfr. Part No. C14G16S CYL FUSE >STR >14 x 51 16A GG 500V AC
1 Pack of 10
£57.58
  • RS Stock No. 181-8609
  • Mfr. Part No. 250MJ31-7
1 Box of 5
£270.87
  • RS Stock No. 123-242
  • Mfr. Part No. 170338 FRCMM-25/4/01-A
Each
£125.69
  • RS Stock No. 578-307
  • Mfr. Part No. VW3A99ACFAA
Each
£241.31
  • RS Stock No. 211-0185
  • Mfr. Part No. 5SD7432-7
Each
£199.19
  • RS Stock No. 273-4676
  • Mfr. Part No. 8340-F410-P1M1-A3H0-30A
Each
£60.12
  • RS Stock No. 435-229
  • Mfr. Part No. 2CCG001233R0001
Each
£289.81
  • RS Stock No. 787-4353P
  • Mfr. Part No. 178.6164.0001
Each (Supplied in a Bag)
£3.68
  • RS Stock No. 613-372
  • Mfr. Part No. 5TT4112-3
Each
£39.33
  • RS Stock No. 205-156
  • Mfr. Part No. A9C62310
Each
£696.33
  • RS Stock No. 237-1410
  • Mfr. Part No. 2CSR275151R2204
Each
£122.16
  • RS Stock No. 201-030
  • Mfr. Part No. 2CDS272337R0044
Each
£104.14
  • RS Stock No. 202-841
  • Mfr. Part No. 2CDS384001R0165
Each
£122.41
Better World
  • RS Stock No. 157-310
  • Mfr. Part No. 3VA2225-0HL42-0AA0
Each
£1,728.74
Better World
  • RS Stock No. 160-040
  • Mfr. Part No. 3RV2021-1GA10-0DA0
Each
£89.03
  • RS Stock No. 258-239
  • Mfr. Part No. 279048 FAZ-C1,6/4
Each
£210.03
  • RS Stock No. 258-766
  • Mfr. Part No. 278917 FAZ-K63/3
Each
£288.27
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