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.

50958 Products showing for Fuses & Circuit Breakers

158 of 999+
  • RS Stock No. 729-2833
  • Mfr. Part No. 3600-P10-Si-1A
Each
£64.88
  • RS Stock No. 849-6601
  • Mfr. Part No. EUC3P40C
Each
£22.40
  • RS Stock No. 736-2617
  • Mfr. Part No. 160000.0,25
Each (In a Bag of 10)
£1.318
  • RS Stock No. 247-2725
  • Mfr. Part No. D217169
1 Box of 10
£13.85
  • RS Stock No. 210-2115
  • Mfr. Part No. 3120-N554-P7T1-W19DG4-5A
Each
£28.05
  • RS Stock No. 435-291
  • Mfr. Part No. 2CCG001214R0001
Each
£96.68
  • RS Stock No. 124-3030
  • Mfr. Part No. EMBP EMBP
Each
£3.03
  • RS Stock No. 847-3611
  • Mfr. Part No. 102196 FAZ-D40/2-NA
Each
£104.93
  • RS Stock No. 255-175
  • Mfr. Part No. 260182 NZM3-XTVDVR
Each
£198.13
  • RS Stock No. 851-1684
  • Mfr. Part No. FNQ-R-3
Each
£53.87
  • RS Stock No. 264-9247
Each (In a Pack of 5)
£7.282
  • RS Stock No. 396-386
  • Mfr. Part No. 3NE1022-0
Each (In a Pack of 3)
£70.11
  • RS Stock No. 270-3113
  • Mfr. Part No. S228452
Each
£14.21
  • RS Stock No. 728-8654
  • Mfr. Part No. 106-P10-000040-10A
Each
£14.73
  • RS Stock No. 266-3117
  • Mfr. Part No. 0 140 32
1 Box of 10
£32.16
  • RS Stock No. 240-6384
  • Mfr. Part No. CCPBR0616AB
Each
£23.70
  • RS Stock No. 495-0707
  • Mfr. Part No. LVR008NK
Each (In a Pack of 5)
£0.596
  • RS Stock No. 360-7323
  • Mfr. Part No. 0SPL0001T
Each (In a Pack of 5)
£5.302
  • RS Stock No. 312-3667
  • Mfr. Part No. GB2CB09
Each
£27.45
  • RS Stock No. 395-658
  • Mfr. Part No. 3NH3030
1 Pack of 3
£149.69
Results per page