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

14 of 999+
  • RS Stock No. 537-1486
1 Pack of 10
£1.93(exc. VAT)
  • RS Stock No. 703-8370
  • Mfr. Part No. C10G4
1 Pack of 10
£11.01(exc. VAT)
  • RS Stock No. 501-809
Each (In a Pack of 10)
£4.093(exc. VAT)
Better World
  • RS Stock No. 746-7738
  • Mfr. Part No. 2CDS252001R0634 S202-C63
Each
£47.99(exc. VAT)
  • RS Stock No. 563-740
1 Pack of 10
£3.77(exc. VAT)
Better World
  • RS Stock No. 214-2056
  • Mfr. Part No. M9F11102
Each
£28.58(exc. VAT)
  • RS Stock No. 189-5333
  • Mfr. Part No. P1062705 / CMC101
Each
£5.72(exc. VAT)
Better World
  • RS Stock No. 850-8593
  • Mfr. Part No. EZ9F16110
Each
£4.03(exc. VAT)
  • RS Stock No. 183-2855
  • Mfr. Part No. KV7106
Each
£51.42(exc. VAT)
  • RS Stock No. 521-2501
Each (In a Pack of 5)
£3.516(exc. VAT)
  • RS Stock No. 563-431
Each (In a Pack of 10)
£0.278(exc. VAT)
  • RS Stock No. 156-8608
  • Mfr. Part No. AAO32M50
Each (In a Pack of 5)
£5.936(exc. VAT)
  • RS Stock No. 153-3466
  • Mfr. Part No. EUBLMC40C30A
Each
£46.67(exc. VAT)
  • RS Stock No. 125-1433
  • Mfr. Part No. 1492-SPM2B100
Each
£35.71(exc. VAT)
Better World
  • RS Stock No. 489-6603
  • Mfr. Part No. 5SY6110-7
Each
£16.72(exc. VAT)
  • RS Stock No. 337-5234
  • Mfr. Part No. FHAC0002LXN
Each (In a Pack of 5)
£5.094(exc. VAT)
  • RS Stock No. 413-383
  • Mfr. Part No. BAO63
Each
£11.33(exc. VAT)
  • RS Stock No. 156-8591
  • Mfr. Part No. AAO32M40
Each (In a Pack of 5)
£5.936(exc. VAT)
  • RS Stock No. 787-4120
  • Mfr. Part No. 0287015.PXCN
1 Pack of 10
£2.25(exc. VAT)
  • RS Stock No. 413-923
  • Mfr. Part No. RS63H
Each
£25.94(exc. VAT)
Results per page