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.

51028 Products showing for Fuses & Circuit Breakers

23 of 999+
  • RS Stock No. 535-4144
  • Mfr. Part No. 2CDS271001R0104 S201M-C10
Each
£18.34(exc. VAT)
  • RS Stock No. 537-1458
  • Mfr. Part No. S505-1-R
1 Pack of 10
£2.27(exc. VAT)
Better World
  • RS Stock No. 132-015
  • Mfr. Part No. 2CDS272001R0064 S202M-C6
Each
£57.47(exc. VAT)
  • RS Stock No. 289-1622
  • Mfr. Part No. 2CSM264343R1801
Each
£20.05(exc. VAT)
Better World
  • RS Stock No. 746-7775
  • Mfr. Part No. 2CDS253001R0204 S203-C20
Each
£61.66(exc. VAT)
  • RS Stock No. 415-222
  • Mfr. Part No. TIS63
Each
£18.49(exc. VAT)
  • RS Stock No. 537-1408
Each (In a Pack of 10)
£0.179(exc. VAT)
  • RS Stock No. 541-3445
  • Mfr. Part No. 0451005.MRL
Each (In a Pack of 10)
£0.70(exc. VAT)
  • RS Stock No. 490-466
  • Mfr. Part No. 236776 PXF-40/4/003-A
Each
£44.32(exc. VAT)
  • RS Stock No. 610-9901
Each (In a Pack of 10)
£0.409(exc. VAT)
  • RS Stock No. 408-397
  • Mfr. Part No. FX0416
Each
£8.95(exc. VAT)
  • RS Stock No. 537-1638
  • Mfr. Part No. S506-250-R
Each (In a Pack of 10)
£0.427(exc. VAT)
  • RS Stock No. 254-6253
  • Mfr. Part No. 188-K2C100
Each
£14.28(exc. VAT)
  • RS Stock No. 123-2017
  • Mfr. Part No. 0031.1622
Each
£9.74(exc. VAT)
  • RS Stock No. 420-268
1 Kit
£73.65(exc. VAT)
  • RS Stock No. 738-2823
  • Mfr. Part No. 0326020.MXP
Each (In a Pack of 10)
£1.04(exc. VAT)
  • RS Stock No. 537-0972
  • Mfr. Part No. S500-8-R
Each (In a Pack of 10)
£0.198(exc. VAT)
  • RS Stock No. 767-5018
Each (In a Pack of 10)
£0.35(exc. VAT)
Better World
  • RS Stock No. 791-3470
  • Mfr. Part No. A9F55110
Each
£27.08(exc. VAT)
  • RS Stock No. 339-307
  • Mfr. Part No. SE10C116
Each
£23.23(exc. VAT)
Results per page