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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Better World
  • RS Stock No. 776-3155
  • Mfr. Part No. A9N61501
Each
£53.11(exc. VAT)
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  • Mfr. Part No. 177543 FAZ6-B2/2
Each
£59.29(exc. VAT)
  • RS Stock No. 237-5104
  • Mfr. Part No. 2CSR254001R1405
Each
£317.21(exc. VAT)
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  • Mfr. Part No. ATQR20
Each
£22.93(exc. VAT)
  • RS Stock No. 613-342
  • Mfr. Part No. 5TT4152-0
Each
£136.66(exc. VAT)
  • RS Stock No. 201-6912
  • Mfr. Part No. 2CSR275080R2324
Each
£117.70(exc. VAT)
  • RS Stock No. 156-9055
  • Mfr. Part No. 180FM
Each
£46.19(exc. VAT)
  • RS Stock No. 259-3394
  • Mfr. Part No. 1SDA071328R1
Each
£7,850.35(exc. VAT)
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  • Mfr. Part No. A4-5AF
Each (In a Pack of 5)
£0.934(exc. VAT)
Better World
  • RS Stock No. 211-2375
  • Mfr. Part No. M9F22320
Each
£118.40(exc. VAT)
  • RS Stock No. 273-2405
  • Mfr. Part No. 140UT-D7D2-B50
Each
£137.04(exc. VAT)
  • RS Stock No. 247-2834
  • Mfr. Part No. M215130
1 Box of 10
£54.33(exc. VAT)
  • RS Stock No. 247-3999
Each (In a Pack of 10)
£1.02(exc. VAT)
Better World
  • RS Stock No. 238-3489
  • Mfr. Part No. A9Y13440
Each
£240.66(exc. VAT)
  • RS Stock No. 232-0128
  • Mfr. Part No. 1SDA060210R1 T6N630 FF TMA 630A
Each
£2,249.90(exc. VAT)
  • RS Stock No. 140-392
  • Mfr. Part No. 2CCS883001R0501
Each
£161.68(exc. VAT)
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  • Mfr. Part No. M9XUPC04
Each
£59.69(exc. VAT)
  • RS Stock No. 738-2788
  • Mfr. Part No. 0218001.MXP
Each (In a Pack of 10)
£0.913(exc. VAT)
Better World
  • RS Stock No. 219-9025
  • Mfr. Part No. A9N26946
Each
£75.67(exc. VAT)
  • RS Stock No. 129-481
  • Mfr. Part No. 1207190
Each
£7.08(exc. VAT)
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