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

632 of 999+
  • RS Stock No. 266-602
  • Mfr. Part No. 8US1313-4AH03
Each
£165.31
Better World
  • RS Stock No. 746-7902
  • Mfr. Part No. 2CDS254001R0041 S204-D4
Each
£186.76
Better World
  • RS Stock No. 271-9454
  • Mfr. Part No. 3VA1196-4ED22-0AA0
Each
£173.08
  • RS Stock No. 266-637
  • Mfr. Part No. 3VW9011-0AN76
1 Kit
£246.62
  • RS Stock No. 211-6087
  • Mfr. Part No. 8GB5012-0KM
Each
£38.62
  • RS Stock No. 272-0244
  • Mfr. Part No. 5SY7106-6KK13
Each
£31.32
  • RS Stock No. 611-0298
Each (In a Pack of 10)
£0.933
Better World
  • RS Stock No. 269-838
  • Mfr. Part No. 3VA6115-5KL31-0AA0
Each
£1,432.08
  • RS Stock No. 738-2790P
  • Mfr. Part No. 0218005.MXP
Each (Supplied in a Box)
£0.94
Better World
  • RS Stock No. 209-6737
  • Mfr. Part No. 3VA1025-2ED32-0AA0
Each
£146.14
  • RS Stock No. 261-723
  • Mfr. Part No. FNQ-R-3
1 Pack of 10
£408.89
  • RS Stock No. 210-9382
  • Mfr. Part No. 3VA9387-0SB30
Each
£34.47
  • RS Stock No. 539-1575
  • Mfr. Part No. 1SKP808142C0059 EPB25-308 CUK
Each
£402.05
  • RS Stock No. 148-538
  • Mfr. Part No. 3VA5112-4ED41-0AA0
Each
£578.88
  • RS Stock No. 738-2841
  • Mfr. Part No. 0451.062MRL
Each (In a Pack of 10)
£3.754
Better World
  • RS Stock No. 260-525
  • Mfr. Part No. 3VA6225-7JT41-0AA0
Each
£2,159.47
Better World
  • RS Stock No. 270-3681
  • Mfr. Part No. 3VA2025-7JQ32-0AA0
Each
£1,060.08
Better World
  • RS Stock No. 270-3641
  • Mfr. Part No. 3VA2025-5JQ46-0AA0
Each
£1,133.31
  • RS Stock No. 203-3337
  • Mfr. Part No. 8GK9910-0KK31
Each (In a Pack of 100)
£2.192
Better World
  • RS Stock No. 268-557
  • Mfr. Part No. 3VA6140-5KP41-2AA0
Each
£1,447.23
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