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.

51057 Products showing for Fuses & Circuit Breakers

619 of 999+
  • RS Stock No. 228-990
  • Mfr. Part No. C22G2
1 Pack of 10
£33.41
  • RS Stock No. 265-635
  • Mfr. Part No. 8US1921-1CC02
Each
£55.84
  • RS Stock No. 922-7055
  • Mfr. Part No. 278642 FAZ-B6/1N
Each
£63.55
  • RS Stock No. 219-9232
  • Mfr. Part No. A9E18071
Each
£42.80
  • RS Stock No. 219-3609
  • Mfr. Part No. 0299070.TXN
Each (In a Pack of 10)
£3.032
  • RS Stock No. 250-4751
  • Mfr. Part No. 2CDL240150R1624
Each
£36.03
Better World
  • RS Stock No. 202-7190
  • Mfr. Part No. 5SL6216-6
Each
£44.18
  • RS Stock No. 210-6894
  • Mfr. Part No. 3NA3250-6
Each (In a Pack of 3)
£77.883
Better World
  • RS Stock No. 271-9893
  • Mfr. Part No. 3VA1132-4GE46-0AA0
Each
£260.47
Better World
  • RS Stock No. 248-4152
  • Mfr. Part No. LV833725
Each
£2,887.37
Better World
  • RS Stock No. 238-3371
  • Mfr. Part No. A9P24316
Each
£135.77
  • RS Stock No. 435-396
  • Mfr. Part No. 2CCG001233R0001
Each
£289.81
  • RS Stock No. 203-1984
  • Mfr. Part No. 3NA3365
Each (In a Pack of 3)
£28.96
  • RS Stock No. 232-2029
  • Mfr. Part No. 3NW2150-0HG
Each (In a Pack of 10)
£17.726
  • RS Stock No. 260-7975
  • Mfr. Part No. C25R3TM250
Each
£2,030.39
  • RS Stock No. 201-246
  • Mfr. Part No. 2CDS274001R0277
Each
£161.16
  • RS Stock No. 259-140
  • Mfr. Part No. 279098 FAZ-K13/4
Each
£172.62
Better World
  • RS Stock No. 238-3266
  • Mfr. Part No. A9DA7716
Each
£368.68
  • RS Stock No. 299-794
  • Mfr. Part No. 5SJ4201-8HG41
Each
£119.56
  • RS Stock No. 849-6421
  • Mfr. Part No. TPN12
Each
£163.49
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