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. 188-4485
1 Box of 1000
£6,055.09(exc. VAT)
  • RS Stock No. 231-8337
  • Mfr. Part No. 5SP3725-2KK01
Each
£90.07(exc. VAT)
  • RS Stock No. 270-7944
  • Mfr. Part No. 3403.0176.11
Each
£0.77(exc. VAT)
  • RS Stock No. 203-081
  • Mfr. Part No. 2CDS243701R0401
Each
£89.18(exc. VAT)
Better World
  • RS Stock No. 157-123
  • Mfr. Part No. 3VA2140-5KQ42-0AA0
Each
£1,358.10(exc. VAT)
  • RS Stock No. 266-3076
  • Mfr. Part No. 0 114 06
1 Box of 10
£20.55(exc. VAT)
  • RS Stock No. 131-150
  • Mfr. Part No. 2901008
Each
£17.09(exc. VAT)
Better World
  • RS Stock No. 271-9646
  • Mfr. Part No. 3VA11103FF420AA0
Each
£312.56(exc. VAT)
  • RS Stock No. 254-4153
  • Mfr. Part No. PF-FB2-350
Each
£126.97(exc. VAT)
  • RS Stock No. 277-0789
  • Mfr. Part No. 3WA9111-0AN31
Each
£214.79(exc. VAT)
  • RS Stock No. 182-1593
  • Mfr. Part No. 170M1567D
Each
£26.35(exc. VAT)
  • RS Stock No. 692-5062
  • Mfr. Part No. SF-1206S250-2
Each (In a Pack of 10)
£0.357(exc. VAT)
  • RS Stock No. 409-839
  • Mfr. Part No. 1410-F110-P1F1-W14QB4-5A
Each
£20.09(exc. VAT)
  • RS Stock No. 247-1852
  • Mfr. Part No. 33643
Each
£402.14(exc. VAT)
Better World
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  • Mfr. Part No. 3VA1050-4ED32-0AA0
Each
£172.17(exc. VAT)
Better World
  • RS Stock No. 213-1066
  • Mfr. Part No. 5SL6663-7
Each
£242.64(exc. VAT)
  • RS Stock No. 277-8524
Each
£13.08(exc. VAT)
Better World
  • RS Stock No. 209-6787
  • Mfr. Part No. 3VA1125-5ED42-0AA0
Each
£251.74(exc. VAT)
  • RS Stock No. 454-8203
  • Mfr. Part No. 259708 NZM1-XA24AC/DC
Each
£102.96(exc. VAT)
  • RS Stock No. 225-5935
  • Mfr. Part No. 2CCF019617R0001 S803PV-SP50 - 5 kA
Each
£306.27(exc. VAT)
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