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

673 of 999+
  • RS Stock No. 182-1395
  • Mfr. Part No. 170M1565D
Each (In a Box of 10)
£58.809
  • RS Stock No. 230-244
  • Mfr. Part No. 107664 NZMB2-S125-BT-CNA
Each
£823.13
Better World
  • RS Stock No. 191-6144
  • Mfr. Part No. A9Y62340
Each
£336.45
Better World
  • RS Stock No. 231-9775
  • Mfr. Part No. 2CDS274001R0324 S204M C 32A - 15 KA
1 Box of 1
£131.63
  • RS Stock No. 106-756
  • Mfr. Part No. A9N18352
Each
£844.47
  • RS Stock No. 110-280
  • Mfr. Part No. A9D77410
Each
£565.71
  • RS Stock No. 257-866
  • Mfr. Part No. 281692 BC-O-1/18-TW-ECO
Each
£60.97
  • RS Stock No. 123-341
  • Mfr. Part No. 170888 FRBMM-B16/2/003-LIA
Each
£114.57
  • RS Stock No. 769-0060
  • Mfr. Part No. 0312002.HXP
Each (In a Pack of 10)
£0.328
  • RS Stock No. 517-6556
  • Mfr. Part No. RXEF005
Each (In a Pack of 10)
£0.338
  • RS Stock No. 192-0843
  • Mfr. Part No. 1SDA067095R1
Each
£745.28
  • RS Stock No. 237-6211
  • Mfr. Part No. 1SDA067013R1 XT2N 160 TMD 32A FF
Each
£274.60
  • RS Stock No. 174-0240
  • Mfr. Part No. 0477004.MXP
1 Box of 1000
£1,048.10
  • RS Stock No. 287-3450
  • Mfr. Part No. 3NB3351-1KK26
Each
£674.50
Better World
  • RS Stock No. 772-1350
  • Mfr. Part No. 5SY4302-8
Each
£75.48
  • RS Stock No. 245-937
  • Mfr. Part No. 12TDLEJ10
Each
£119.05
  • RS Stock No. 254-476
  • Mfr. Part No. 260168 NZM2-XTVD
Each
£82.40
  • RS Stock No. 218-8692
  • Mfr. Part No. 1492-RCDA4A40-US
Each
£159.56
  • RS Stock No. 773-3536
  • Mfr. Part No. LPJ-6SP
Each
£55.65
Better World
  • RS Stock No. 245-683
  • Mfr. Part No. 3VA6140-6KM31-0AA0
Each
£1,466.17
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