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.

50958 Products showing for Fuses & Circuit Breakers

153 of 999+
  • RS Stock No. 184-9027
  • Mfr. Part No. CPB1010B
Each
£4.99
  • RS Stock No. 787-4394P
  • Mfr. Part No. 0298150.ZXEH
Each (Supplied in a Bag)
£5.77
  • RS Stock No. 783-3346
  • Mfr. Part No. 70-059-60/0.25A
Each (In a Pack of 10)
£2.244
  • RS Stock No. 922-6995
  • Mfr. Part No. 278546 FAZ-C1/1
Each
£28.94
  • RS Stock No. 183-3669
  • Mfr. Part No. 2CDS244701R0324
Each
£79.53
Better World
  • RS Stock No. 806-7307
  • Mfr. Part No. SEA91252
Each
£42.80
  • RS Stock No. 563-413A
Each (In a Pack of 100)
£0.18
Better World
  • RS Stock No. 209-5187
  • Mfr. Part No. 3VA2216-5MN32-0AA0
Each
£682.68
Better World
  • RS Stock No. 232-0343
  • Mfr. Part No. 2CSS255101R0134 SN201-C13
Each
£33.49
  • RS Stock No. 825-5854
  • Mfr. Part No. P1MB3PC32
Each
£70.21
  • RS Stock No. 535-4352
  • Mfr. Part No. 2CDS273001R0634 S203M-C63
Each
£90.56
Better World
  • RS Stock No. 734-9419
  • Mfr. Part No. A9F94216
Each
£107.60
  • RS Stock No. 130-874
  • Mfr. Part No. A9C65316
Each
£393.77
  • RS Stock No. 782-6593
  • Mfr. Part No. W28-XQ1A-12
Each
£4.14
  • RS Stock No. 418-9501
  • Mfr. Part No. 70-059-61/0.5A
Each (In a Pack of 10)
£0.606
  • RS Stock No. 219-6260P
  • Mfr. Part No. 0154005.DRT
Each (Supplied on a Reel)
£4.149
  • RS Stock No. 124-3046
  • Mfr. Part No. EMCH320 EMCH320
Each
£102.62
  • RS Stock No. 230-016
  • Mfr. Part No. 108109 PKPM2-10/2/C/003-A
Each
£181.12
Better World
  • RS Stock No. 211-2453
  • Mfr. Part No. M9F43305
Each
£248.83
Better World
  • RS Stock No. 191-6093
  • Mfr. Part No. A9P22632
Each
£42.60
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