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.

50957 Products showing for Fuses & Circuit Breakers

709 of 999+
  • RS Stock No. 177-8054
1 Bag of 1000
£139.70
  • RS Stock No. 255-748
  • Mfr. Part No. 236550 PXL-D16/3N
Each
£125.85
  • RS Stock No. 237-6000
  • Mfr. Part No. 1SDA061979R1 T7S 800A PR332-LSIRc FF
Each
£4,097.46
  • RS Stock No. 346-683
  • Mfr. Part No. NHJF36080TW
Each
£1,821.19
  • RS Stock No. 247-1789
  • Mfr. Part No. 33390
Each
£3,581.67
  • RS Stock No. 245-9220
  • Mfr. Part No. SF-1206F350M-2
Each (On a Reel of 3000)
£0.289
  • RS Stock No. 125-1482
  • Mfr. Part No. 1492-SPM3C040
Each
£63.61
Better World
  • RS Stock No. 221-1250
  • Mfr. Part No. LV432533
Each
£91.17
  • RS Stock No. 269-3857
  • Mfr. Part No. 7010.3450
Each
£0.57
  • RS Stock No. 201-175
  • Mfr. Part No. 2CDS272337R0404
Each
£112.80
  • RS Stock No. 247-292
  • Mfr. Part No. 125NHG1B-690 NH FUSE 125A 690V gG SIZE 1
1 Pack of 3
£25.77
  • RS Stock No. 787-4429
  • Mfr. Part No. 03455LS1H
Each
£4.91
Better World
  • RS Stock No. 237-3233
  • Mfr. Part No. 2CDS252001R0805 S202-B80 6kA
Each
£97.50
  • RS Stock No. 232-047
  • Mfr. Part No. 110847 NZMN3-ME350-AVE
Each
£2,398.81
Better World
  • RS Stock No. 219-8899
  • Mfr. Part No. KNB160ZF2
Each (In a Pack of 10)
£5.547
  • RS Stock No. 241-335
  • Mfr. Part No. 168842 BB-EVF-10/3P-1MU
Each
£40.73
  • RS Stock No. 252-2210
Each (On a Tape of 4000)
£0.105
  • RS Stock No. 135-912
  • Mfr. Part No. 0915069
1 Pack of 3
£500.01
  • RS Stock No. 597-999
  • Mfr. Part No. MMN350
Each
£478.94
  • RS Stock No. 174-0364
  • Mfr. Part No. 0603L020YR
1 Reel of 4000
£3,057.91
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