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. 269-8368
  • Mfr. Part No. 3NH3032
Each (In a Pack of 3)
£30.593(exc. VAT)
  • RS Stock No. 247-2874
  • Mfr. Part No. R212075
1 Box of 10
£104.48(exc. VAT)
  • RS Stock No. 156-8939
  • Mfr. Part No. 40FE
Each
£19.31(exc. VAT)
Better World
  • RS Stock No. 232-2293
  • Mfr. Part No. 5SY4216-5
Each
£67.03(exc. VAT)
Better World
  • RS Stock No. 850-8638
  • Mfr. Part No. EZ9F66140
Each
£2.15(exc. VAT)
  • RS Stock No. 173-7971
  • Mfr. Part No. 0090.0030
Each (In a Box of 10)
£17.295(exc. VAT)
  • RS Stock No. 259-9748
  • Mfr. Part No. 1SCA108250R1001
Each
£3.74(exc. VAT)
  • RS Stock No. 738-2914
  • Mfr. Part No. 04511.25MRL
Each (In a Pack of 10)
£0.934(exc. VAT)
  • RS Stock No. 273-2294
  • Mfr. Part No. 140MT-C-N45
Each
£4.70(exc. VAT)
  • RS Stock No. 435-324
  • Mfr. Part No. 2CCG001244R0001
Each
£312.17(exc. VAT)
Better World
  • RS Stock No. 776-3896
  • Mfr. Part No. A9L16297
Each
£810.11(exc. VAT)
  • RS Stock No. 240-907
  • Mfr. Part No. 191367 NZMH3-MX350
Each
£2,187.07(exc. VAT)
  • RS Stock No. 852-6957
  • Mfr. Part No. HTB-46M-R
Each (In a Pack of 10)
£4.737(exc. VAT)
  • RS Stock No. 140-383
  • Mfr. Part No. 2CCS884001R0325
Each
£159.32(exc. VAT)
  • RS Stock No. 124-3143
  • Mfr. Part No. 5ST3710
Each
£108.58(exc. VAT)
  • RS Stock No. 269-3871
  • Mfr. Part No. 8020.5065
Each
£0.70(exc. VAT)
  • RS Stock No. 767-5147
Each (In a Pack of 10)
£0.241(exc. VAT)
  • RS Stock No. 259-181
  • Mfr. Part No. 278550 FAZ-C2,5/1
Each
£43.62(exc. VAT)
  • RS Stock No. 488-6397
  • Mfr. Part No. 2CSF204101R3250 - F204A-25/0.3
Each
£102.80(exc. VAT)
  • RS Stock No. 247-2714
  • Mfr. Part No. C222205
1 Box of 10
£11.67(exc. VAT)
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