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

588 of 999+
Better World
  • RS Stock No. 209-6836
  • Mfr. Part No. 3VA1150-6ED42-0AA0
Each
£275.32(exc. VAT)
  • RS Stock No. 611-0737
Each (In a Pack of 10)
£0.756(exc. VAT)
  • RS Stock No. 169-9397
  • Mfr. Part No. S500-50-R
1 Bag of 1000
£2,425.01(exc. VAT)
  • RS Stock No. 179-2991
  • Mfr. Part No. 2081890000
Each
£25.62(exc. VAT)
  • RS Stock No. 254-4234
  • Mfr. Part No. PF-NT5-80
Each (In a Box of 10)
£20.713(exc. VAT)
  • RS Stock No. 246-2628
  • Mfr. Part No. 2CCS573001R0014
Each
£136.48(exc. VAT)
  • RS Stock No. 188-1682
  • Mfr. Part No. P1RA4P40A030
Each
£218.77(exc. VAT)
  • RS Stock No. 144-4889
  • Mfr. Part No. CDC840F
Each
£239.90(exc. VAT)
  • RS Stock No. 260-9543
  • Mfr. Part No. C10R45E100
Each
£2,517.21(exc. VAT)
Better World
  • RS Stock No. 211-6013
  • Mfr. Part No. 3VA1140-5ED42-0AA0
Each
£251.74(exc. VAT)
  • RS Stock No. 282-2331
  • Mfr. Part No. FB100160Q1
Each (In a Pack of 4)
£10.848(exc. VAT)
Better World
  • RS Stock No. 212-8977
  • Mfr. Part No. 5SY7450-6
Each
£173.75(exc. VAT)
  • RS Stock No. 174-0420
  • Mfr. Part No. RF2637-000
1 Box of 10000
£2,415.82(exc. VAT)
  • RS Stock No. 277-0729
  • Mfr. Part No. 3WA9111-0AD32
Each
£187.31(exc. VAT)
  • RS Stock No. 345-318
  • Mfr. Part No. C11B44V025B
Each
£1,784.77(exc. VAT)
  • RS Stock No. 630-867
  • Mfr. Part No. E095569Q
1 Box of 10
£8.80(exc. VAT)
  • RS Stock No. 654-687
  • Mfr. Part No. A9DH3625
Each
£221.06(exc. VAT)
  • RS Stock No. 256-885
  • Mfr. Part No. 281666 NZM2-XKR4
Each
£19.56(exc. VAT)
Better World
  • RS Stock No. 211-9662
  • Mfr. Part No. 5SV3416-6
Each
£185.74(exc. VAT)
  • RS Stock No. 231-9582
  • Mfr. Part No. 2CCS884001R0634 S804C C 63A - 25 KA
Each
£218.42(exc. VAT)
Results per page