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.

50914 Products showing for Fuses & Circuit Breakers

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  • RS Stock No. 448-3370
  • Mfr. Part No. Q320151
Each
£36.33(exc. VAT)
  • RS Stock No. 247-2907
  • Mfr. Part No. T222979
1 Box of 10
£119.98(exc. VAT)
  • RS Stock No. 231-9331
  • Mfr. Part No. 1SDA100355R1 XT5N 630 EkipDip LS/I 630
Each
£1,455.57(exc. VAT)
  • RS Stock No. 611-0608
Each (In a Pack of 10)
£0.677(exc. VAT)
  • RS Stock No. 282-6492
  • Mfr. Part No. PV-100A-1XL-15
Each
£355.98(exc. VAT)
  • RS Stock No. 448-3308
  • Mfr. Part No. L320055
Each
£31.83(exc. VAT)
  • RS Stock No. 272-2298
  • Mfr. Part No. 225524 CI-K4-PKZ4-G
Each
£59.80(exc. VAT)
  • RS Stock No. 248-706
  • Mfr. Part No. 102136 FAZ-C40/1-RT
Each
£61.05(exc. VAT)
  • RS Stock No. 260-7889
  • Mfr. Part No. C25F42D100
Each
£1,418.11(exc. VAT)
  • RS Stock No. 230-1064
  • Mfr. Part No. 109272 PFGCM-40/2/003
Each
£46.08(exc. VAT)
  • RS Stock No. 259-124
  • Mfr. Part No. 279035 FAZ-B16/4
Each
£148.81(exc. VAT)
Better World
  • RS Stock No. 211-8752
  • Mfr. Part No. AK5PA211N1
Each
£44.74(exc. VAT)
  • RS Stock No. 377-0342
  • Mfr. Part No. W212539
Each (In a Pack of 5)
£3.222(exc. VAT)
Better World
  • RS Stock No. 231-9674
  • Mfr. Part No. 2CDS251103R0104 S201-C 10
1 Box of 1
£36.49(exc. VAT)
  • RS Stock No. 251-162
  • Mfr. Part No. 193174 BP-O-600/11-EP-W
Each
£510.20(exc. VAT)
  • RS Stock No. 188-4619
Each
£9.02(exc. VAT)
  • RS Stock No. 258-6357
  • Mfr. Part No. AC85ABD
Each
£1.07(exc. VAT)
  • RS Stock No. 275-8820
  • Mfr. Part No. R9PXV
Each
£7.56(exc. VAT)
  • RS Stock No. 787-4306P
  • Mfr. Part No. 35421000029
Each (Supplied in a Bag)
£1.78(exc. VAT)
  • RS Stock No. 244-034
  • Mfr. Part No. 102200 FAZ-C2/2-RT
Each
£138.61(exc. VAT)
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