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. 243-6217
  • Mfr. Part No. 5SU1346-6FP16
Each
£301.09(exc. VAT)
Better World
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  • Mfr. Part No. A9R69725
Each
£300.08(exc. VAT)
  • RS Stock No. 125-1482
  • Mfr. Part No. 1492-SPM3C040
Each
£63.61(exc. VAT)
  • RS Stock No. 183-3663
  • Mfr. Part No. 2CDS243701R0204
Each
£55.49(exc. VAT)
  • RS Stock No. 216-5351
Each
£19.10(exc. VAT)
  • RS Stock No. 146-2817
  • Mfr. Part No. 187180 AFDD-13/2/B/003-A
Each
£192.21(exc. VAT)
  • RS Stock No. 125-1439
  • Mfr. Part No. 1492-SPM3B020
Each
£64.02(exc. VAT)
  • RS Stock No. 897-9027P
  • Mfr. Part No. SF-0603S500-2
Each (Supplied on a Reel)
£0.358(exc. VAT)
  • RS Stock No. 178-1022
  • Mfr. Part No. G226280 / BTIA42V32M40
Each (In a Pack of 10)
£9.752(exc. VAT)
  • RS Stock No. 136-0640
  • Mfr. Part No. C1017200 / FR14GR69V10
Each
£11.20(exc. VAT)
  • RS Stock No. 202-845
  • Mfr. Part No. 2CDS384001R0255
Each
£146.87(exc. VAT)
Better World
  • RS Stock No. 328-545
  • Mfr. Part No. 5SL6020-7
Each
£36.53(exc. VAT)
  • RS Stock No. 261-969
  • Mfr. Part No. SD00-PB
1 Pack of 2
£5.16(exc. VAT)
  • RS Stock No. 610-9945
Each (In a Pack of 10)
£0.409(exc. VAT)
  • RS Stock No. 396-382
  • Mfr. Part No. 3NE1224-0
Each (In a Pack of 3)
£217.16(exc. VAT)
  • RS Stock No. 270-3007
  • Mfr. Part No. B090575
Each (In a Box of 10)
£0.592(exc. VAT)
  • RS Stock No. 263-287
  • Mfr. Part No. 32D33
1 Pack of 5
£8.48(exc. VAT)
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  • Mfr. Part No. C10H6TM063
Each
£1,056.75(exc. VAT)
Better World
  • RS Stock No. 539-8166
  • Mfr. Part No. 2CDS211001R0205 SH201-B20
Each
£14.75(exc. VAT)
  • RS Stock No. 339-347
  • Mfr. Part No. SEA9BN24SXS
Each
£535.23(exc. VAT)
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