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

667 of 999+
  • RS Stock No. 769-4637
  • Mfr. Part No. 239127 FAZ6-C3/3
Each
£118.01
  • RS Stock No. 119-392
  • Mfr. Part No. KSA630DLF401
Each
£1,563.94
Better World
  • RS Stock No. 210-1747
  • Mfr. Part No. 3VA2563-6HN42-0AA0
Each
£2,161.31
  • RS Stock No. 212-249
  • Mfr. Part No. A9F95103
Each
£99.53
Better World
  • RS Stock No. 746-7857
  • Mfr. Part No. 2CDS252001R0081 S202-D8
Each
£47.25
  • RS Stock No. 357-134
  • Mfr. Part No. BGL46040LU
Each
£574.83
Better World
  • RS Stock No. 219-8936
  • Mfr. Part No. KSB100SF4
Each
£477.10
  • RS Stock No. 221-5663
  • Mfr. Part No. 8040.2002.01
Each (In a Pack of 5)
£0.414
  • RS Stock No. 140-519
  • Mfr. Part No. 2CCS882001R0505
Each
£99.34
Better World
  • RS Stock No. 211-2671
  • Mfr. Part No. LV438326
Each
£121.30
Better World
  • RS Stock No. 237-5597
  • Mfr. Part No. A9XPKL10
Each (In a Pack of 10)
£0.571
  • RS Stock No. 231-8926
  • Mfr. Part No. 1080T3PU3
Each
£742.66
  • RS Stock No. 260-7533
  • Mfr. Part No. C11B3TM100B
Each
£359.73
  • RS Stock No. 123-672
  • Mfr. Part No. 170833 FRBMM-C20/2/01-LIA
Each
£126.54
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  • Mfr. Part No. C10W36M050
Each
£2,352.96
  • RS Stock No. 339-372
  • Mfr. Part No. SEA9PNDSI
Each
£1,199.23
Better World
  • RS Stock No. 238-3460
  • Mfr. Part No. A9R56240
Each
£126.16
  • RS Stock No. 287-9633
  • Mfr. Part No. 1250A-3S-230
Each
£401.73
  • RS Stock No. 260-7711
  • Mfr. Part No. C1632G160
Each
£441.71
  • RS Stock No. 517-6629P
  • Mfr. Part No. RXEF040
Each (Supplied in a Bag)
£0.39
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