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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  • Mfr. Part No. 264695 PLG6-C16/1N
Each
£12.22(exc. VAT)
  • RS Stock No. 610-476
  • Mfr. Part No. 5SY8206-8
Each
£134.99(exc. VAT)
Better World
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  • Mfr. Part No. A9N61520
Each
£125.80(exc. VAT)
Better World
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  • Mfr. Part No. 5SY4608-8
Each
£129.57(exc. VAT)
  • RS Stock No. 174-0694
  • Mfr. Part No. 0459003.UR
Each (In a Pack of 10)
£0.809(exc. VAT)
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Each
£157.32(exc. VAT)
  • RS Stock No. 541-3423P
  • Mfr. Part No. 0451004.MRL
Each (Supplied on a Reel)
£0.81(exc. VAT)
  • RS Stock No. 247-2726
  • Mfr. Part No. D218204
1 Box of 10
£66.87(exc. VAT)
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  • Mfr. Part No. 0299040.TXN
Each (In a Pack of 10)
£2.09(exc. VAT)
  • RS Stock No. 161-1837
  • Mfr. Part No. 9005805.325
Each
£4.75(exc. VAT)
  • RS Stock No. 630-874
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1 Box of 10
£4.26(exc. VAT)
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Each
£38.84(exc. VAT)
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£1.896(exc. VAT)
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Each
£238.95(exc. VAT)
  • RS Stock No. 123-250
  • Mfr. Part No. 170344 FRCMM-80/4/03-A
Each
£318.06(exc. VAT)
Better World
  • RS Stock No. 776-3026
  • Mfr. Part No. A9N18469
Each
£296.74(exc. VAT)
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Each (In a Pack of 10)
£0.439(exc. VAT)
  • RS Stock No. 173-7912
  • Mfr. Part No. 8020.0606.G
1 Box of 1000
£539.11(exc. VAT)
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  • Mfr. Part No. 9933
Each
£13.18(exc. VAT)
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  • Mfr. Part No. 3NA7810-6
Each (In a Pack of 3)
£29.703(exc. VAT)
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