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.

50915 Products showing for Fuses & Circuit Breakers

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  • RS Stock No. 870-0981
  • Mfr. Part No. T9-611P-3
Each
£1.92(exc. VAT)
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  • Mfr. Part No. 2800860
Each
£39.07(exc. VAT)
  • RS Stock No. 769-3432
  • Mfr. Part No. SS-5H-6-3A-BK
Each (In a Pack of 10)
£0.307(exc. VAT)
  • RS Stock No. 132-724
  • Mfr. Part No. 183782 IZMX40B4-P16W-1
Each
£14,204.97(exc. VAT)
  • RS Stock No. 535-6005
  • Mfr. Part No. 2CDS271001R0205 S201M-B20
Each
£18.34(exc. VAT)
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  • Mfr. Part No. 2CDS271061R0258
Each
£97.94(exc. VAT)
  • RS Stock No. 169-9392
  • Mfr. Part No. S501-4-R
1 Bag of 1000
£169.26(exc. VAT)
  • RS Stock No. 341-206
  • Mfr. Part No. C16F1TM160
Each
£755.98(exc. VAT)
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  • Mfr. Part No. 3VW9011-0AT04
Each
£703.93(exc. VAT)
Better World
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  • Mfr. Part No. KBB40ZFC
Each (In a Pack of 10)
£2.374(exc. VAT)
Better World
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  • Mfr. Part No. 1SDA071080R1
Each
£12,251.24(exc. VAT)
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  • Mfr. Part No. S 190/01 / 5WG1190-8AD01
Each
£97.38(exc. VAT)
  • RS Stock No. 192-0819
  • Mfr. Part No. 1SDA067410R1
Each
£484.46(exc. VAT)
Better World
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  • Mfr. Part No. 5SY4340-7
Each
£86.12(exc. VAT)
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  • Mfr. Part No. 1SDA071760R1
Each
£18,046.48(exc. VAT)
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  • Mfr. Part No. MGN61513
Each
£50.33(exc. VAT)
Better World
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  • Mfr. Part No. 5SL6663-7
Each
£242.64(exc. VAT)
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  • Mfr. Part No. 2CCS883001R0205
Each
£133.02(exc. VAT)
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  • Mfr. Part No. 2CSF202124R1630
Each
£93.51(exc. VAT)
  • RS Stock No. 200-260
  • Mfr. Part No. 2CDS381001R0031
Each
£45.09(exc. VAT)
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