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

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  • RS Stock No. 248-706
  • Mfr. Part No. 102136 FAZ-C40/1-RT
Each
£61.05(exc. VAT)
Better World
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  • Mfr. Part No. A9DB3716
Each
£516.46(exc. VAT)
  • RS Stock No. 212-8856
  • Mfr. Part No. 5SJ4210-7HG42
Each
£93.27(exc. VAT)
  • RS Stock No. 250-4416
  • Mfr. Part No. 1SCA022697R6330
1 Box of 3
£53.68(exc. VAT)
  • RS Stock No. 263-900
  • Mfr. Part No. 3VA9673-0JC43
1 Kit
£272.78(exc. VAT)
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  • Mfr. Part No. 3402.0040.11
Each (In a Pack of 10)
£0.729(exc. VAT)
  • RS Stock No. 260-3026
  • Mfr. Part No. 3-132-874
Each (On a Reel of 320)
£0.652(exc. VAT)
Better World
  • RS Stock No. 219-8874
  • Mfr. Part No. KBC10DCB20
Each (In a Pack of 10)
£9.444(exc. VAT)
  • RS Stock No. 123-337
  • Mfr. Part No. 170825 FRBM6-C32/2/01-A
Each
£136.80(exc. VAT)
  • RS Stock No. 125-1531
  • Mfr. Part No. 1492-SPM3D630
Each
£143.42(exc. VAT)
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Each (On a Reel of 750)
£2.583(exc. VAT)
Better World
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Each
£1,045.64(exc. VAT)
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Each
£10.79(exc. VAT)
  • RS Stock No. 248-5657
  • Mfr. Part No. SA03PA320R
Each
£249.15(exc. VAT)
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  • Mfr. Part No. 112747 NZMC1-M100-SVE
Each
£527.21(exc. VAT)
Better World
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  • Mfr. Part No. 2CDS254001R0204 S204-C20
Each
£153.97(exc. VAT)
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  • Mfr. Part No. 2CCS573001R0157
Each
£122.38(exc. VAT)
Better World
  • RS Stock No. 211-0465
  • Mfr. Part No. KSA400EV4203
Each
£1,308.85(exc. VAT)
  • RS Stock No. 212-007
  • Mfr. Part No. M9F11325
Each
£111.09(exc. VAT)
  • RS Stock No. 899-1932
  • Mfr. Part No. 2GU13
Each
£26.83(exc. VAT)
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