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.

50973 Products showing for Fuses & Circuit Breakers

677 of 999+
  • RS Stock No. 125-986
  • Mfr. Part No. 172532 NZM3-XTVDKL
Each
£242.82
  • RS Stock No. 878-3683
  • Mfr. Part No. 0235001.HXP
Each (In a Pack of 100)
£0.271
  • RS Stock No. 611-0614
Each (In a Pack of 10)
£1.101
  • RS Stock No. 252-5339
  • Mfr. Part No. 67020160
Each (In a Pack of 3)
£12.513
  • RS Stock No. 228-724
  • Mfr. Part No. 3.6WFFHO160
1 Pack of 3
£1,669.75
Better World
  • RS Stock No. 209-7039
  • Mfr. Part No. 3VA2010-6JQ32-0AA0
Each
£1,013.10
  • RS Stock No. 282-6543
  • Mfr. Part No. PV-63A-01XL
Each
£266.99
  • RS Stock No. 396-106
  • Mfr. Part No. 3NA3030
Each (In a Pack of 3)
£25.31
  • RS Stock No. 255-161
  • Mfr. Part No. 25KR85
1 Pack of 20
£161.81
  • RS Stock No. 125-1501
  • Mfr. Part No. 1492-SPM1D160
Each
£20.90
  • RS Stock No. 202-878
  • Mfr. Part No. 2CDS271061R0134
Each
£77.76
  • RS Stock No. 195-8751
  • Mfr. Part No. NIS6150MT2TXG
Each (In a Pack of 50)
£0.593
  • RS Stock No. 260-9393
  • Mfr. Part No. C104TM100
Each
£248.12
  • RS Stock No. 169-9427
  • Mfr. Part No. S505-1-R
1 Bag of 1000
£187.07
  • RS Stock No. 341-236
  • Mfr. Part No. C7PWM
Each
£7,149.47
Better World
  • RS Stock No. 232-2306
  • Mfr. Part No. 5SY4402-7
Each
£150.36
  • RS Stock No. 259-044
  • Mfr. Part No. 271080 Z-GV-10/3P-4TE
Each
£66.92
  • RS Stock No. 182-1355
  • Mfr. Part No. 170M5813D
Each (In a Box of 3)
£331.10
Better World
  • RS Stock No. 209-7457
  • Mfr. Part No. 5SL4310-6
Each
£77.12
Better World
  • RS Stock No. 211-0414
  • Mfr. Part No. KNA160DL4
Each
£280.70
Results per page