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.

51014 Products showing for Fuses & Circuit Breakers

26 of 999+
  • RS Stock No. 265-0166
Each
£9.01(exc. VAT)
Better World
  • RS Stock No. 746-7738
  • Mfr. Part No. 2CDS252001R0634 S202-C63
Each
£47.99(exc. VAT)
  • RS Stock No. 668-6023
1 Pack of 10
£3.21(exc. VAT)
  • RS Stock No. 797-6030
  • Mfr. Part No. SF 229 R
Each (In a Pack of 10)
£0.826(exc. VAT)
  • RS Stock No. 729-2754
  • Mfr. Part No. 2-5700-IG2-P10-DD-000040-6A
Each
£23.00(exc. VAT)
  • RS Stock No. 240-6397
  • Mfr. Part No. CCPBR1016AC
Each
£34.64(exc. VAT)
  • RS Stock No. 611-0658
Each (In a Pack of 10)
£1.101(exc. VAT)
  • RS Stock No. 125-1494
  • Mfr. Part No. 1492-SPM1D020
Each
£19.92(exc. VAT)
  • RS Stock No. 230-0862
  • Mfr. Part No. 177374 FAZ6-B1,5/1
Each
£19.76(exc. VAT)
  • RS Stock No. 738-3024
  • Mfr. Part No. 0251003.MRT1L
Each (In a Pack of 10)
£0.856(exc. VAT)
  • RS Stock No. 188-6978
  • Mfr. Part No. K215128
1 Pack of 10
£13.85(exc. VAT)
  • RS Stock No. 703-8406
  • Mfr. Part No. C10G32
1 Pack of 10
£11.01(exc. VAT)
  • RS Stock No. 787-4356
  • Mfr. Part No. FHAC0001ZXJG
Each
£4.38(exc. VAT)
  • RS Stock No. 537-1385
  • Mfr. Part No. S506-500-R
Each (In a Pack of 10)
£0.208(exc. VAT)
  • RS Stock No. 242-1061
Each (In a Pack of 5)
£5.864(exc. VAT)
  • RS Stock No. 878-3882
  • Mfr. Part No. 01500274Z
Each (In a Pack of 10)
£2.963(exc. VAT)
  • RS Stock No. 668-6091
Each (In a Pack of 10)
£0.518(exc. VAT)
  • RS Stock No. 500-6211
  • Mfr. Part No. 4301.1401
Each
£4.79(exc. VAT)
  • RS Stock No. 414-055
Each (In a Pack of 10)
£1.098(exc. VAT)
  • RS Stock No. 413-917
  • Mfr. Part No. RS32H
Each
£23.45(exc. VAT)
Results per page