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. 259-3405
  • Mfr. Part No. 1SDA071339R1
Each
£6,900.92(exc. VAT)
  • RS Stock No. 599-827
  • Mfr. Part No. CDC125F
Each
£134.10(exc. VAT)
  • RS Stock No. 852-7152
  • Mfr. Part No. MDL-4-R
Each
£0.70(exc. VAT)
  • RS Stock No. 200-6946
  • Mfr. Part No. C5-1BR921
Each (In a Box of 5)
£4.764(exc. VAT)
  • RS Stock No. 262-226
  • Mfr. Part No. 35NHG000BI-400
1 Pack of 3
£12.53(exc. VAT)
  • RS Stock No. 177-8106
Each (In a Pack of 50)
£0.118(exc. VAT)
  • RS Stock No. 237-5983
  • Mfr. Part No. 1SDA054880R1 UVR 24VAC/DC T4-6
Each
£181.56(exc. VAT)
  • RS Stock No. 210-6889
  • Mfr. Part No. 3NA3232-6
Each (In a Pack of 3)
£56.913(exc. VAT)
  • RS Stock No. 243-782
  • Mfr. Part No. 107066 BBS-3/FL
Each (In a Pack of 2)
£10.035(exc. VAT)
  • RS Stock No. 275-8808
  • Mfr. Part No. KBA25ED4303W
Each
£99.52(exc. VAT)
  • RS Stock No. 627-468
  • Mfr. Part No. 8PQ5000-4BA58
Each
£45.23(exc. VAT)
  • RS Stock No. 707-7234
  • Mfr. Part No. GRS63-A
Each
£23.47(exc. VAT)
  • RS Stock No. 299-757
  • Mfr. Part No. 3NW7531-8HG
Each
£552.52(exc. VAT)
  • RS Stock No. 270-3040
  • Mfr. Part No. G090511
Each (In a Box of 10)
£0.505(exc. VAT)
  • RS Stock No. 188-4464
  • Mfr. Part No. 3-103-086
Each (On a Reel of 750)
£2.583(exc. VAT)
  • RS Stock No. 144-4950
  • Mfr. Part No. MJT716
Each
£24.50(exc. VAT)
  • RS Stock No. 922-6992
  • Mfr. Part No. 278544 FAZ-C0,5/1
Each
£28.94(exc. VAT)
  • RS Stock No. 260-7541
  • Mfr. Part No. C11B4TM040L
Each
£468.16(exc. VAT)
  • RS Stock No. 654-999
  • Mfr. Part No. C12B6TM160L
Each
£906.27(exc. VAT)
Better World
  • RS Stock No. 124-3191
  • Mfr. Part No. 5SY4406-7
Each
£137.79(exc. VAT)
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