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.

50973 Products showing for Fuses & Circuit Breakers

649 of 999+
  • RS Stock No. 299-081
  • Mfr. Part No. 1SNF100038R0000
Each
£10.03
  • RS Stock No. 260-8002
  • Mfr. Part No. C25V35E160
Each
£3,106.92
Better World
  • RS Stock No. 221-1124
  • Mfr. Part No. LAD311
Each (In a Pack of 10)
£7.171
  • RS Stock No. 282-2332
  • Mfr. Part No. FB100224Q1
Each (In a Pack of 4)
£14.548
  • RS Stock No. 277-3923
Each (In a Bag of 1000)
£0.609
  • RS Stock No. 703-2629P
  • Mfr. Part No. 8020.0517.PT
Each (Supplied in a Box)
£0.436
Better World
  • RS Stock No. 259-3247
  • Mfr. Part No. 1SDA071144R1
Each
£9,057.66
  • RS Stock No. 228-872
  • Mfr. Part No. CH60J3I
1 Pack of 2
£332.36
  • RS Stock No. 175-0372
  • Mfr. Part No. REX12-TA2-107-DC24V-4A/4A
Each
£54.63
  • RS Stock No. 216-3346
  • Mfr. Part No. 5ST3800
Each (In a Pack of 10)
£1.823
Better World
  • RS Stock No. 236-6662
  • Mfr. Part No. 1SDA068268R1 XT3S 250 TMG 125A FF
Each
£619.60
  • RS Stock No. 820-7280
  • Mfr. Part No. 00940551Z
Each
£81.47
  • RS Stock No. 136-0546
  • Mfr. Part No. HP6M10
Each (In a Box of 10)
£8.638
  • RS Stock No. 277-5061
  • Mfr. Part No. P1RE1NC32AC030
Each
£100.03
  • RS Stock No. 272-7479
  • Mfr. Part No. LV432600T
Each
£236.96
  • RS Stock No. 276-9237
  • Mfr. Part No. KSA630ET4AFM
Each
£3,560.12
  • RS Stock No. 258-734
  • Mfr. Part No. 278545 FAZ-C0,75/1
Each
£42.60
  • RS Stock No. 335-293
  • Mfr. Part No. SE10C325
Each
£104.32
  • RS Stock No. 236-6882
  • Mfr. Part No. 1SDA104815R1 AUP-I XT5-6 P/W 3 250V
Each
£97.18
  • RS Stock No. 228-858
  • Mfr. Part No. CCP2-1-DCC
1 Pack of 6
£257.58
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