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

654 of 999+
Better World
  • RS Stock No. 776-3216
  • Mfr. Part No. A9N61534
Each
£116.46
  • RS Stock No. 589-856
  • Mfr. Part No. A9R11280
Each
£239.58
  • RS Stock No. 181-8755
  • Mfr. Part No. ESD10
Each
£6.52
  • RS Stock No. 272-7475
  • Mfr. Part No. LV429341T
Each
£59.31
Better World
  • RS Stock No. 209-6862
  • Mfr. Part No. 3VA1180-5EF36-0AA0
Each
£272.50
Better World
  • RS Stock No. 271-9748
  • Mfr. Part No. 3VA1112-6GE46-0AA0
Each
£547.12
Better World
  • RS Stock No. 221-0957
  • Mfr. Part No. LV429458
Each
£651.29
Better World
  • RS Stock No. 211-9639
  • Mfr. Part No. 5SV3342-4KK14
Each
£640.00
  • RS Stock No. 203-2028
  • Mfr. Part No. 3NW6005-1
Each (In a Pack of 20)
£3.576
  • RS Stock No. 230-2978
  • Mfr. Part No. 3NC3436-6U
Each (In a Pack of 3)
£486.163
  • RS Stock No. 232-2235
  • Mfr. Part No. 5SJ4118-7HG42
Each
£49.44
  • RS Stock No. 269-7937
  • Mfr. Part No. 1110989
Each (In a Pack of 3)
£19.017
Better World
  • RS Stock No. 209-6866
  • Mfr. Part No. 3VA1180-6EF46-0AA0
Each
£372.47
  • RS Stock No. 201-019
  • Mfr. Part No. 2CDS272061R0467
Each
£174.03
  • RS Stock No. 173-9786
  • Mfr. Part No. 0034.6019
Each (In a Bag of 100)
£0.313
Better World
  • RS Stock No. 772-1202
  • Mfr. Part No. 5SU1374-7AK82
Each
£4,177.98
Better World
  • RS Stock No. 231-8386
  • Mfr. Part No. 5SV4311-0
Each
£112.80
  • RS Stock No. 123-599
  • Mfr. Part No. 170433 FRCMM-63/2/003-A
Each
£235.13
Better World
  • RS Stock No. 178-7824
  • Mfr. Part No. LV426573
Each
£469.09
  • RS Stock No. 225-6120
  • Mfr. Part No. 2CSF204001R2630 F204 AC-63/0,1
Each
£153.15
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