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.

51015 Products showing for Fuses & Circuit Breakers

14 of 999+
  • RS Stock No. 426-3132
1 Pack of 5
£30.32(exc. VAT)
Better World
  • RS Stock No. 203-2345
  • Mfr. Part No. 5SY6111-7
Each
£17.81(exc. VAT)
  • RS Stock No. 265-0209
Each
£28.37(exc. VAT)
  • RS Stock No. 811-1899
  • Mfr. Part No. 1SL1201A00 65P08X12
Each
£25.95(exc. VAT)
Better World
  • RS Stock No. 790-9305
  • Mfr. Part No. A9D11820
Each
£148.47(exc. VAT)
  • RS Stock No. 231-9623
  • Mfr. Part No. 2CDL000001R1220 SZ-BP 12G
1 Box of 1
£4.08(exc. VAT)
  • RS Stock No. 537-1486
1 Pack of 10
£1.93(exc. VAT)
  • RS Stock No. 797-6046
  • Mfr. Part No. SF 070 R
Each (In a Pack of 10)
£0.829(exc. VAT)
  • RS Stock No. 265-0172
Each
£16.70(exc. VAT)
Better World
  • RS Stock No. 746-7854
  • Mfr. Part No. 2CDS252001R0061 S202-D6
Each
£47.25(exc. VAT)
  • RS Stock No. 156-8709
  • Mfr. Part No. DD200
Each
£27.68(exc. VAT)
Better World
  • RS Stock No. 202-7122
  • Mfr. Part No. 5SL6204-7
Each
£50.55(exc. VAT)
  • RS Stock No. 111-7811
  • Mfr. Part No. SWTC-421-3535
Each (In a Pack of 10)
£1.646(exc. VAT)
Better World
  • RS Stock No. 527-9425
  • Mfr. Part No. 2CDS251001R0021 S201-D2
Each
£17.94(exc. VAT)
  • RS Stock No. 183-3543
  • Mfr. Part No. 236962 PXK-C10/1N/003-A
Each
£67.39(exc. VAT)
  • RS Stock No. 535-4138
  • Mfr. Part No. 2CDS271001R0064 S201M-C6
Each
£19.86(exc. VAT)
  • RS Stock No. 418-495
  • Mfr. Part No. 32NNSF
Each
£9.76(exc. VAT)
  • RS Stock No. 488-6836
  • Mfr. Part No. 2CDS251001R0104 - S201C10
Each
£16.45(exc. VAT)
Better World
  • RS Stock No. 791-3461
  • Mfr. Part No. A9F55106
Each
£29.87(exc. VAT)
  • RS Stock No. 668-6089
1 Pack of 10
£5.18(exc. VAT)
Results per page