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.

50907 Products showing for Fuses & Circuit Breakers

212 of 999+
  • RS Stock No. 100-093
  • Mfr. Part No. 2CDS253103R0404
1 Box of 1
£115.86(exc. VAT)
  • RS Stock No. 542-1238
  • Mfr. Part No. 0466.125NR
Each (In a Pack of 10)
£0.509(exc. VAT)
Better World
  • RS Stock No. 157-379
  • Mfr. Part No. 3VA2116-8KP42-0AA0
Each
£1,556.01(exc. VAT)
  • RS Stock No. 764-9589
Each (In a Pack of 10)
£0.487(exc. VAT)
  • RS Stock No. 174-0714
  • Mfr. Part No. 2920L200/24DR
Each (In a Pack of 20)
£0.667(exc. VAT)
  • RS Stock No. 851-1687
  • Mfr. Part No. FNQ-5
Each
£48.74(exc. VAT)
  • RS Stock No. 181-8453
  • Mfr. Part No. STD10
1 Box of 20
£52.83(exc. VAT)
  • RS Stock No. 219-6068
  • Mfr. Part No. 0154.250DR
Each (In a Pack of 10)
£2.932(exc. VAT)
  • RS Stock No. 825-5627
  • Mfr. Part No. P1MB1PD02
Each
£17.93(exc. VAT)
  • RS Stock No. 181-8869
  • Mfr. Part No. 125MJ31-7
Each
£62.81(exc. VAT)
  • RS Stock No. 245-087
  • Mfr. Part No. A9D19216
Each
£254.99(exc. VAT)
Better World
  • RS Stock No. 214-2072
  • Mfr. Part No. M9F11320
Each
£125.09(exc. VAT)
  • RS Stock No. 182-1824
  • Mfr. Part No. 170M3813D
Each
£135.34(exc. VAT)
  • RS Stock No. 173-7972
  • Mfr. Part No. 0090.0020
Each (In a Box of 10)
£17.295(exc. VAT)
  • RS Stock No. 517-6994P
  • Mfr. Part No. RGEF1200
Each (Supplied in a Bag)
£0.692(exc. VAT)
  • RS Stock No. 654-761
  • Mfr. Part No. SEA9BPN10AFD12
Each
£961.67(exc. VAT)
  • RS Stock No. 312-3639
  • Mfr. Part No. GB2CB06
Each
£27.45(exc. VAT)
  • RS Stock No. 767-5052
Each (In a Pack of 10)
£0.246(exc. VAT)
  • RS Stock No. 654-763
  • Mfr. Part No. SEA9PQCB2504
Each
£985.62(exc. VAT)
  • RS Stock No. 183-3709
  • Mfr. Part No. 2CSR255041R1164
Each
£107.02(exc. VAT)
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