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

617 of 999+
  • RS Stock No. 205-317
  • Mfr. Part No. LV429370T
Each
£32.55
  • RS Stock No. 203-2034
  • Mfr. Part No. 3NA6222
Each (In a Pack of 3)
£21.847
Better World
  • RS Stock No. 210-1675
  • Mfr. Part No. 3VA1163-6EE46-0AA0
Each
£309.25
Better World
  • RS Stock No. 209-6806
  • Mfr. Part No. 3VA1132-5GF46-0AA0
Each
£313.93
  • RS Stock No. 276-9229
  • Mfr. Part No. KBB40ED44305TW
Each
£258.14
Better World
  • RS Stock No. 271-9629
  • Mfr. Part No. 3VA10963ED420AA0
Each
£199.99
  • RS Stock No. 287-6357
  • Mfr. Part No. 2CDS251103R0164
Each (In a Pack of 5)
£30.32
  • RS Stock No. 247-1875
  • Mfr. Part No. 33914
Each
£1,348.01
  • RS Stock No. 263-530
  • Mfr. Part No. 3VA9467-0HC15
Each
£977.54
  • RS Stock No. 256-570
  • Mfr. Part No. 3VA5335-5GC41-2AA0
Each
£1,616.81
  • RS Stock No. 260-7964
  • Mfr. Part No. C25R35E250
Each
£3,121.10
Better World
  • RS Stock No. 211-3752
  • Mfr. Part No. 3VA2010-5HL32-0AA0
Each
£388.64
  • RS Stock No. 161-434
  • Mfr. Part No. 3VA9201-0QF20
Each
£17.53
  • RS Stock No. 231-340
  • Mfr. Part No. 113135 Z-SV-35/1P
Each
£31.80
Better World
  • RS Stock No. 270-4623
  • Mfr. Part No. 3VA2140-6HK36-0AA0
Each
£480.63
  • RS Stock No. 263-533
  • Mfr. Part No. 3VA9471-0WD31
Each
£40.23
  • RS Stock No. 328-522
  • Mfr. Part No. 5ST3705-3HG
Each
£138.60
  • RS Stock No. 345-086
  • Mfr. Part No. NHGL36070
Each
£1,589.24
Better World
  • RS Stock No. 210-1649
  • Mfr. Part No. 3VA1125-6ED32-0AA0
Each
£211.29
  • RS Stock No. 268-046
  • Mfr. Part No. 3VA5250-5ED31-1AA0
Each
£513.15
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