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

195 of 999+
  • RS Stock No. 203-2024
  • Mfr. Part No. 3NA6230
Each (In a Pack of 3)
£21.847(exc. VAT)
  • RS Stock No. 847-3627
  • Mfr. Part No. 278776 FAZ-D5/2
Each
£74.76(exc. VAT)
Better World
  • RS Stock No. 746-7835
  • Mfr. Part No. 2CDS251001R0131 S201-D13
Each
£17.22(exc. VAT)
  • RS Stock No. 848-4181
  • Mfr. Part No. LP-CC-8
Each
£37.84(exc. VAT)
  • RS Stock No. 227-0671
  • Mfr. Part No. 239162 FAZ6-B40/3N
Each
£88.82(exc. VAT)
  • RS Stock No. 230-0979
  • Mfr. Part No. 239107 FAZ6-C40/2
Each
£58.12(exc. VAT)
  • RS Stock No. 288-4616
  • Mfr. Part No. JF 25-100 M10
Each
£4.05(exc. VAT)
  • RS Stock No. 599-744
  • Mfr. Part No. CDC470F
Each
£332.47(exc. VAT)
  • RS Stock No. 276-8728
  • Mfr. Part No. A9L16482
Each
£1,301.34(exc. VAT)
  • RS Stock No. 341-515
  • Mfr. Part No. C50F4TM500D3
Each
£4,777.06(exc. VAT)
  • RS Stock No. 101-770
Each
£648.53(exc. VAT)
  • RS Stock No. 253-220
  • Mfr. Part No. 193534 PXK-D16/1N/003-F
Each
£210.03(exc. VAT)
  • RS Stock No. 254-461
  • Mfr. Part No. 259452 NZM1-XU24DC
Each
£119.90(exc. VAT)
  • RS Stock No. 169-9370
  • Mfr. Part No. TDC11-3A
1 Bag of 1000
£1,291.79(exc. VAT)
  • RS Stock No. 863-7764
  • Mfr. Part No. 4 117 61
Each
£139.21(exc. VAT)
  • RS Stock No. 174-0634
  • Mfr. Part No. 0477004.MXP
Each (In a Pack of 5)
£1.608(exc. VAT)
  • RS Stock No. 231-9681
  • Mfr. Part No. 2CDS253001R0805 S203-B80 6kA
1 Box of 1
£162.14(exc. VAT)
  • RS Stock No. 767-5046
Each (In a Pack of 10)
£0.246(exc. VAT)
  • RS Stock No. 188-4661
Each
£26.98(exc. VAT)
  • RS Stock No. 223-2801
  • Mfr. Part No. 60230025
Each (In a Pack of 10)
£1.497(exc. VAT)
Results per page