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. 203-2020
  • Mfr. Part No. 3NA3354
Each (In a Pack of 3)
£25.46(exc. VAT)
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Each (In a Pack of 10)
£1.358(exc. VAT)
  • RS Stock No. 261-2828
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Each
£262.06(exc. VAT)
  • RS Stock No. 257-343
  • Mfr. Part No. 3VA5445-5EC31-0AA0
Each
£1,515.43(exc. VAT)
  • RS Stock No. 210-9381
  • Mfr. Part No. 3VA9384-0JF60
Each
£125.83(exc. VAT)
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  • Mfr. Part No. NGN232
Each
£105.82(exc. VAT)
  • RS Stock No. 254-4180
  • Mfr. Part No. PF-HT1-15
Each (In a Tray of 50)
£16.763(exc. VAT)
  • RS Stock No. 229-859
  • Mfr. Part No. 113244 NZMN2-A160-SVE
Each
£959.18(exc. VAT)
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  • Mfr. Part No. R9H18403
Each
£38.22(exc. VAT)
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  • Mfr. Part No. NHGF36060U53XTW
Each
£3,046.54(exc. VAT)
Better World
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  • Mfr. Part No. 5SL6406-7
Each
£113.08(exc. VAT)
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  • Mfr. Part No. 265892 NZMN3-4-AE400/250
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£2,345.24(exc. VAT)
Better World
  • RS Stock No. 248-3717
  • Mfr. Part No. A9Z61225
Each
£708.19(exc. VAT)
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  • Mfr. Part No. 3ND2124
Each (In a Pack of 3)
£16.723(exc. VAT)
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  • Mfr. Part No. 5SG1553
Each (In a Pack of 6)
£3.127(exc. VAT)
  • RS Stock No. 304-2221
  • Mfr. Part No. A300081
Each
£217.49(exc. VAT)
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  • Mfr. Part No. FP FC 054
Each
£26.10(exc. VAT)
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  • Mfr. Part No. 2CDS242701R0104
Each
£28.79(exc. VAT)
  • RS Stock No. 231-9894
  • Mfr. Part No. 2CSB203201R4630 DDA203 AS-63/0.5
Each
£172.25(exc. VAT)
  • RS Stock No. 328-400
  • Mfr. Part No. 5SM2735-6
Each
£153.21(exc. VAT)
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