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. 376-6573
  • Mfr. Part No. FX0367/1
Each (In a Pack of 5)
£1.048(exc. VAT)
  • RS Stock No. 517-6994P
  • Mfr. Part No. RGEF1200
Each (Supplied in a Bag)
£0.692(exc. VAT)
  • RS Stock No. 173-8039
  • Mfr. Part No. 3403.0271.23
1 Reel of 1500
£1,428.71(exc. VAT)
  • RS Stock No. 409-902
  • Mfr. Part No. 1610-21-20A
Each
£10.82(exc. VAT)
  • RS Stock No. 201-090
  • Mfr. Part No. 2CDS274061R0158
Each
£489.71(exc. VAT)
Better World
  • RS Stock No. 270-4074
  • Mfr. Part No. 3VA2116-6HM46-0AA0
Each
£1,129.49(exc. VAT)
  • RS Stock No. 125-753
  • Mfr. Part No. 174194 IKA-2/36-ST-UV
Each
£200.07(exc. VAT)
  • RS Stock No. 219-6068
  • Mfr. Part No. 0154.250DR
Each (In a Pack of 10)
£2.932(exc. VAT)
  • RS Stock No. 854-8890
  • Mfr. Part No. FNQ-R-6
Each
£56.54(exc. VAT)
  • RS Stock No. 144-4734
  • Mfr. Part No. NFT332
Each
£115.25(exc. VAT)
  • RS Stock No. 852-6951
  • Mfr. Part No. HTB-48I-R
Each
£4.68(exc. VAT)
Better World
  • RS Stock No. 209-6486
  • Mfr. Part No. 5SL4310-8
Each
£87.11(exc. VAT)
  • RS Stock No. 312-3639
  • Mfr. Part No. GB2CB06
Each
£27.45(exc. VAT)
  • RS Stock No. 232-0095
  • Mfr. Part No. 1SDA054437R1 T5N400 FF TMA 400A
Each
£1,156.32(exc. VAT)
  • RS Stock No. 212-255
  • Mfr. Part No. A9XPH416
Each
£29.03(exc. VAT)
  • RS Stock No. 260-8125
  • Mfr. Part No. C40N32D400
Each
£2,616.93(exc. VAT)
  • RS Stock No. 240-6383
  • Mfr. Part No. CCPBR0610AB
Each
£23.70(exc. VAT)
Better World
  • RS Stock No. 791-3310
  • Mfr. Part No. A9F54163
Each
£33.88(exc. VAT)
  • RS Stock No. 225-6130
  • Mfr. Part No. 2CSF204101R2630 F204 A-63/0,1
Each
£201.52(exc. VAT)
Better World
  • RS Stock No. 232-0281
  • Mfr. Part No. 1SDA068475R1 XT4S 250 Ekip LS/I 250A FF
Each
£847.50(exc. VAT)
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