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.

50907 Products showing for Fuses & Circuit Breakers

567 of 999+
  • RS Stock No. 260-7839
  • Mfr. Part No. C253TM250D
Each
£534.59(exc. VAT)
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  • Mfr. Part No. 5SY1716-4
Each
£27.24(exc. VAT)
  • RS Stock No. 170-3787
  • Mfr. Part No. 0712259
Each (In a Box of 20)
£14.312(exc. VAT)
  • RS Stock No. 174-0324
  • Mfr. Part No. 0459003.UR
Each (On a Reel of 500)
£0.596(exc. VAT)
  • RS Stock No. 866-3066
  • Mfr. Part No. 0001.1010
Each (In a Pack of 50)
£0.462(exc. VAT)
  • RS Stock No. 120-840
  • Mfr. Part No. 158331 SPBT12-280/4
Each
£549.77(exc. VAT)
  • RS Stock No. 247-1896
  • Mfr. Part No. 48306
Each
£14,810.92(exc. VAT)
  • RS Stock No. 119-250
  • Mfr. Part No. VW3A98ABMCAC
Each
£738.27(exc. VAT)
  • RS Stock No. 174-0226
  • Mfr. Part No. 0287035.PXCN
1 Box of 2000
£342.62(exc. VAT)
  • RS Stock No. 260-7964
  • Mfr. Part No. C25R35E250
Each
£3,121.10(exc. VAT)
  • RS Stock No. 779-9965
  • Mfr. Part No. OFAF000H35 1SCA022627R1040
Each
£5.21(exc. VAT)
  • RS Stock No. 281-5991
  • Mfr. Part No. FB100672Q1
Each (In a Pack of 2)
£40.525(exc. VAT)
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  • Mfr. Part No. 2CDS273061R0518
Each
£340.98(exc. VAT)
  • RS Stock No. 231-672
  • Mfr. Part No. 110908 NZMH3-4-AE630-T
Each
£4,142.01(exc. VAT)
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  • Mfr. Part No. 5SL6463-6
Each
£129.09(exc. VAT)
  • RS Stock No. 259-4021
  • Mfr. Part No. 1SDA072091R1
Each
£2,196.42(exc. VAT)
Better World
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  • Mfr. Part No. 1SDA067888R1 XT2H 160 Ekip M 52A FF
Each
£728.74(exc. VAT)
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  • Mfr. Part No. A9R25491
Each
£728.58(exc. VAT)
  • RS Stock No. 231-9887
  • Mfr. Part No. 2CSB202001R1400 DDA202 AC-40/0.03
Each
£123.16(exc. VAT)
  • RS Stock No. 230-0935
  • Mfr. Part No. 239120 FAZ6-C0,5/3
Each
£85.68(exc. VAT)
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