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. 729-2723
  • Mfr. Part No. 1410-G111-P2F1-S01-10A
Each
£10.79(exc. VAT)
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  • Mfr. Part No. 411651
Each
£225.90(exc. VAT)
Better World
  • RS Stock No. 746-7750
  • Mfr. Part No. 2CDS253001R0084 S203-C8
Each
£64.83(exc. VAT)
Better World
  • RS Stock No. 210-3418
  • Mfr. Part No. 5SY7140-6
Each
£24.71(exc. VAT)
Better World
  • RS Stock No. 219-9252
  • Mfr. Part No. A9F93220
Each
£191.34(exc. VAT)
  • RS Stock No. 136-0568
  • Mfr. Part No. B219122C / NH000GG50V100/3
Each
£3.55(exc. VAT)
  • RS Stock No. 738-3185P
  • Mfr. Part No. 0KLK.125T
Each (Supplied in a Bag)
£26.59(exc. VAT)
  • RS Stock No. 337-7971
  • Mfr. Part No. 155.0892.6201
Each
£9.85(exc. VAT)
Better World
  • RS Stock No. 214-2073
  • Mfr. Part No. M9F11332
Each
£125.09(exc. VAT)
  • RS Stock No. 597-927
  • Mfr. Part No. CDH840F
Each
£257.18(exc. VAT)
  • RS Stock No. 181-8549
  • Mfr. Part No. AAO4
1 Box of 20
£60.19(exc. VAT)
  • RS Stock No. 336-588
  • Mfr. Part No. SEE132B03
Each
£132.10(exc. VAT)
  • RS Stock No. 156-9027
  • Mfr. Part No. 120FEE
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£57.17(exc. VAT)
  • RS Stock No. 922-6923
  • Mfr. Part No. 102100 FAZ-D2/1-NA
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£37.76(exc. VAT)
  • RS Stock No. 232-0341
  • Mfr. Part No. 2CSF202101R1630 F202 A-63/0.03
Each
£188.12(exc. VAT)
  • RS Stock No. 230-3019
  • Mfr. Part No. 3NE8721-1
Each (In a Pack of 10)
£38.269(exc. VAT)
  • RS Stock No. 438-848
  • Mfr. Part No. M9LC550
Each
£268.50(exc. VAT)
  • RS Stock No. 125-1455
  • Mfr. Part No. 1492-SPM1C050
Each
£19.92(exc. VAT)
  • RS Stock No. 418-669
  • Mfr. Part No. RS100LOCK
Each (In a Pack of 3)
£18.583(exc. VAT)
  • RS Stock No. 405-9208
  • Mfr. Part No. 4130-G211-K4M1-30A
Each
£38.29(exc. VAT)
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