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

660 of 999+
  • RS Stock No. 691-7500P
  • Mfr. Part No. MF-PSMF020X-2
Each (Supplied on a Reel)
£0.258
  • RS Stock No. 738-2879P
  • Mfr. Part No. 015401.5DR
Each (Supplied on a Reel)
£2.309
  • RS Stock No. 490-248
  • Mfr. Part No. 236290 PXL-C20/2
Each
£50.23
  • RS Stock No. 147-620
  • Mfr. Part No. 3VA5195-5EC31-0AA0
Each
£233.37
  • RS Stock No. 738-2936P
  • Mfr. Part No. 0451012.MRL
Each (Supplied on a Reel)
£1.831
  • RS Stock No. 260-9358
  • Mfr. Part No. C103TM032
Each
£119.51
  • RS Stock No. 895-1583P
  • Mfr. Part No. 0263.250MXL
Each (Supplied in a Bag)
£2.302
  • RS Stock No. 247-1790
  • Mfr. Part No. 33394
Each
£4,652.58
  • RS Stock No. 336-641
  • Mfr. Part No. C104MG100
Each
£229.26
  • RS Stock No. 260-7994
  • Mfr. Part No. C25S4
Each
£1,254.93
  • RS Stock No. 260-9517
  • Mfr. Part No. C10R32D100
Each
£1,056.86
  • RS Stock No. 122-541
  • Mfr. Part No. LV510726
Each
£332.45
  • RS Stock No. 263-184
  • Mfr. Part No. 7.2BFGHA140
1 Pack of 3
£1,145.55
  • RS Stock No. 212-360
  • Mfr. Part No. C4047A400
Each
£3,042.17
  • RS Stock No. 627-136
  • Mfr. Part No. 3NC2263-0MK
1 Pack of 10
£121.27
  • RS Stock No. 260-8165
  • Mfr. Part No. C40W32D250
Each
£3,836.45
Better World
  • RS Stock No. 245-435
  • Mfr. Part No. 3VA6225-0KQ31-0AA0
Each
£2,447.41
  • RS Stock No. 237-5204
  • Mfr. Part No. 2CSR274101R1104
Each
£344.20
Better World
  • RS Stock No. 178-7980
  • Mfr. Part No. LV426777
Each
£785.60
Better World
  • RS Stock No. 238-3417
  • Mfr. Part No. A9P71640
Each
£35.96
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