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. 245-089
  • Mfr. Part No. A9D56820
Each
£155.78(exc. VAT)
  • RS Stock No. 415-294
  • Mfr. Part No. TF200
Each
£88.29(exc. VAT)
  • RS Stock No. 188-6710
  • Mfr. Part No. H084302
Each (In a Pack of 10)
£3.439(exc. VAT)
  • RS Stock No. 541-3776
  • Mfr. Part No. 0215.630MXP
Each (In a Pack of 10)
£1.393(exc. VAT)
  • RS Stock No. 848-4399
  • Mfr. Part No. LP-CC-30
Each
£52.15(exc. VAT)
  • RS Stock No. 177-8017
1 Box of 1000
£242.71(exc. VAT)
  • RS Stock No. 231-9680
  • Mfr. Part No. 2CDS253001R0804 S203-C80 6kA 80A
1 Box of 1
£162.20(exc. VAT)
  • RS Stock No. 269-3880
  • Mfr. Part No. 8020.5080
Each
£0.61(exc. VAT)
  • RS Stock No. 849-6406
  • Mfr. Part No. TPN04
Each
£262.26(exc. VAT)
  • RS Stock No. 820-7256
  • Mfr. Part No. LSCR002
Each
£35.00(exc. VAT)
  • RS Stock No. 738-3194
  • Mfr. Part No. 0FLU.440T
Each
£26.66(exc. VAT)
  • RS Stock No. 182-1440
  • Mfr. Part No. TTM500
Each
£193.09(exc. VAT)
  • RS Stock No. 231-433
  • Mfr. Part No. 107586 NZMN2-4-A300
Each
£1,834.18(exc. VAT)
  • RS Stock No. 181-8861
  • Mfr. Part No. 160NHG00B-660
Each
£7.75(exc. VAT)
  • RS Stock No. 703-8522P
  • Mfr. Part No. C10NL
Each (Supplied in a Bag)
£2.132(exc. VAT)
  • RS Stock No. 628-8060
  • Mfr. Part No. 259141 PN1-100
1 Box of 1
£256.40(exc. VAT)
  • RS Stock No. 122-5274
  • Mfr. Part No. 60220025
Each (In a Pack of 10)
£1.497(exc. VAT)
Better World
  • RS Stock No. 790-9263
  • Mfr. Part No. A9D11232
Each
£241.88(exc. VAT)
Better World
  • RS Stock No. 482-540
  • Mfr. Part No. DF83N
Each
£45.61(exc. VAT)
  • RS Stock No. 182-1824
  • Mfr. Part No. 170M3813D
Each
£135.34(exc. VAT)
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