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.

50907 Products showing for Fuses & Circuit Breakers

638 of 999+
  • RS Stock No. 395-507
  • Mfr. Part No. 3NC1008
Each (In a Pack of 10)
£15.584(exc. VAT)
  • RS Stock No. 246-2415
  • Mfr. Part No. 2CCG001758R0001
Each
£413.50(exc. VAT)
  • RS Stock No. 630-828
  • Mfr. Part No. M090516Q
1 Box of 10
£4.80(exc. VAT)
  • RS Stock No. 250-4131
  • Mfr. Part No. 1SDA054397R1
Each
£1,959.54(exc. VAT)
  • RS Stock No. 174-0348
  • Mfr. Part No. 1206L035YR
1 Reel of 4000
£700.40(exc. VAT)
  • RS Stock No. 269-3866
  • Mfr. Part No. 8020.5013
Each
£0.47(exc. VAT)
Better World
  • RS Stock No. 874-4212
  • Mfr. Part No. 3VA1116-4EF36-0AA0
Each
£406.51(exc. VAT)
  • RS Stock No. 174-0398
  • Mfr. Part No. RF1183-000
1 Reel of 7500
£2,165.91(exc. VAT)
  • RS Stock No. 820-7091
  • Mfr. Part No. 0438.250WR
Each (In a Pack of 100)
£0.464(exc. VAT)
Better World
  • RS Stock No. 236-6816
  • Mfr. Part No. 1SDA068562R1 XT4L 160 Ekip LSI 63A FF
Each
£1,421.25(exc. VAT)
  • RS Stock No. 201-6942
  • Mfr. Part No. 2CSR255180R0105 DS201 B10 A10
Each
£221.07(exc. VAT)
  • RS Stock No. 211-0184
  • Mfr. Part No. 5SD7428-0
Each
£86.12(exc. VAT)
  • RS Stock No. 250-4473
  • Mfr. Part No. 1SCA022701R0610
1 Box of 3
£59.50(exc. VAT)
Better World
  • RS Stock No. 155-880
  • Mfr. Part No. 3VA2463-0KQ42-0AA0
Each
£3,839.84(exc. VAT)
  • RS Stock No. 201-6875
  • Mfr. Part No. 2CSR255180R3167
Each
£216.57(exc. VAT)
  • RS Stock No. 275-8760
  • Mfr. Part No. ENN12814
Each
£5.32(exc. VAT)
  • RS Stock No. 289-8843
  • Mfr. Part No. 2232003
Each
£1.73(exc. VAT)
  • RS Stock No. 200-105
  • Mfr. Part No. 2CDS384001R0505
Each
£183.60(exc. VAT)
Better World
  • RS Stock No. 224-7808
  • Mfr. Part No. 3VA1112-6MH36-0AA0
Each
£526.05(exc. VAT)
  • RS Stock No. 247-1890
  • Mfr. Part No. 48092
Each
£20,863.30(exc. VAT)
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