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. 136-8598
  • Mfr. Part No. 1492-RCDA4C80
Each
£357.36(exc. VAT)
  • RS Stock No. 825-5706
  • Mfr. Part No. P1MB2PC01
Each
£50.99(exc. VAT)
Better World
  • RS Stock No. 209-5962
  • Mfr. Part No. 5SL4125-7
Each
£17.98(exc. VAT)
  • RS Stock No. 303-345
  • Mfr. Part No. 787-3861/050-1000
Each
£35.35(exc. VAT)
  • RS Stock No. 254-889
  • Mfr. Part No. 250NHG03BI-400 BUSSMANN 250A 400V GG 03
1 Pack of 3
£39.97(exc. VAT)
  • RS Stock No. 358-011
  • Mfr. Part No. GB2CS06
1 Pack of 6
£154.18(exc. VAT)
  • RS Stock No. 181-8479
  • Mfr. Part No. 400NHG3B-690
1 Box of 3
£54.77(exc. VAT)
  • RS Stock No. 654-659
  • Mfr. Part No. R9F24325
Each
£102.50(exc. VAT)
  • RS Stock No. 272-2319
  • Mfr. Part No. 260365 CI-K2H-PKZ0-GRV
Each
£25.64(exc. VAT)
  • RS Stock No. 272-2318
  • Mfr. Part No. 260364 CI-K2H-PKZ0-GR
Each
£25.64(exc. VAT)
  • RS Stock No. 255-177
  • Mfr. Part No. 260201 NZM2/3-XKAV
Each
£50.51(exc. VAT)
  • RS Stock No. 228-736
  • Mfr. Part No. 25NZ02 FUSE-D02 25A T GL/GG 400VAC E18
1 Pack of 10
£10.77(exc. VAT)
Better World
  • RS Stock No. 219-8284
  • Mfr. Part No. A9N18415
Each
£219.09(exc. VAT)
  • RS Stock No. 266-3103
  • Mfr. Part No. 0 134 06
1 Box of 10
£42.90(exc. VAT)
  • RS Stock No. 181-8456
  • Mfr. Part No. 25NHM000B-690
1 Box of 3
£19.80(exc. VAT)
  • RS Stock No. 177-8086
Each (In a Pack of 50)
£0.345(exc. VAT)
  • RS Stock No. 182-1533
  • Mfr. Part No. TIS35
Each (In a Box of 20)
£18.07(exc. VAT)
  • RS Stock No. 181-8743
  • Mfr. Part No. TIA4
Each
£19.65(exc. VAT)
  • RS Stock No. 610-9793
Each (In a Pack of 10)
£0.474(exc. VAT)
  • RS Stock No. 228-905
  • Mfr. Part No. NITD4
1 Pack of 20
£133.14(exc. VAT)
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