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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Better World
  • RS Stock No. 849-3964
  • Mfr. Part No. LV429632
Each
£240.98(exc. VAT)
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  • Mfr. Part No. NGN202
Each
£122.25(exc. VAT)
Better World
  • RS Stock No. 203-2183
  • Mfr. Part No. 5SY6102-6
Each
£19.01(exc. VAT)
  • RS Stock No. 209-6001
  • Mfr. Part No. 5SP4280-7
Each
£142.73(exc. VAT)
  • RS Stock No. 110-232
  • Mfr. Part No. A9R15291
Each
£365.70(exc. VAT)
  • RS Stock No. 141-068
  • Mfr. Part No. 2CCS883001R0325
Each
£117.14(exc. VAT)
  • RS Stock No. 243-494
  • Mfr. Part No. 100NHM1B
1 Pack of 3
£44.75(exc. VAT)
  • RS Stock No. 878-1669
  • Mfr. Part No. CCMR20
Each
£35.69(exc. VAT)
  • RS Stock No. 191-9458
  • Mfr. Part No. 2CDS251001R0064 S201-C6
Each
£19.11(exc. VAT)
  • RS Stock No. 225-6108
  • Mfr. Part No. 2CSF202101R3800 F202 A-80/0.3
Each
£190.49(exc. VAT)
  • RS Stock No. 517-6994
  • Mfr. Part No. RGEF1200
Each (In a Pack of 5)
£0.692(exc. VAT)
  • RS Stock No. 922-8667
  • Mfr. Part No. 235435 PFIM-25/4/003-A-MW
Each
£153.06(exc. VAT)
  • RS Stock No. 144-4965
  • Mfr. Part No. NEN225
Each
£107.31(exc. VAT)
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  • Mfr. Part No. 7TCA083160R0054 ST200
Each (In a Pack of 10)
£20.621(exc. VAT)
  • RS Stock No. 200-088
  • Mfr. Part No. 2CDS384001R0087
Each
£234.51(exc. VAT)
  • RS Stock No. 178-190
  • Mfr. Part No. 2CCS551001R0165 - S401EB16
Each
£12.30(exc. VAT)
  • RS Stock No. 203-822
  • Mfr. Part No. 2CDS271061R0457
Each
£75.84(exc. VAT)
  • RS Stock No. 339-669
  • Mfr. Part No. SE10B106
Each
£26.32(exc. VAT)
  • RS Stock No. 851-1381
  • Mfr. Part No. MDQ-3
Each (In a Pack of 5)
£4.084(exc. VAT)
  • RS Stock No. 852-7095
  • Mfr. Part No. MDL-1-10-R
Each
£6.71(exc. VAT)
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