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

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  • RS Stock No. 712-4787
  • Mfr. Part No. 0090.0020
Each
£17.27(exc. VAT)
Better World
  • RS Stock No. 211-2332
  • Mfr. Part No. M9F21110
Each
£28.33(exc. VAT)
  • RS Stock No. 265-0185
Each
£21.28(exc. VAT)
Better World
  • RS Stock No. 211-0436
  • Mfr. Part No. KNT40ED4306
Each
£341.25(exc. VAT)
  • RS Stock No. 169-9439
1 Bag of 1000
£710.68(exc. VAT)
  • RS Stock No. 200-6944
  • Mfr. Part No. C6RG2-35
Each (In a Box of 6)
£4.887(exc. VAT)
  • RS Stock No. 541-3079A
  • Mfr. Part No. 021702.5MXP
Each (In a Pack of 100)
£0.09(exc. VAT)
  • RS Stock No. 101-783
Each
£47.29(exc. VAT)
Better World
  • RS Stock No. 232-2276
  • Mfr. Part No. 5SL6013-6
Each
£33.71(exc. VAT)
Better World
  • RS Stock No. 211-2397
  • Mfr. Part No. M9F23220
Each
£83.84(exc. VAT)
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  • Mfr. Part No. 2081870000
Each
£5.40(exc. VAT)
  • RS Stock No. 865-7799
  • Mfr. Part No. 0034.4213
Each (In a Pack of 10)
£0.548(exc. VAT)
  • RS Stock No. 219-6119P
  • Mfr. Part No. 0154003.DR
Each (Supplied on a Reel)
£2.89(exc. VAT)
Better World
  • RS Stock No. 231-9671
  • Mfr. Part No. 2CDS251001R1165 S201 B 16A - 10 KA
1 Box of 1
£16.38(exc. VAT)
Better World
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  • Mfr. Part No. A9Q14225
Each
£216.97(exc. VAT)
Better World
  • RS Stock No. 151-1213
  • Mfr. Part No. 5SU1356-7KK08
Each
£110.09(exc. VAT)
  • RS Stock No. 101-805
Each
£91.58(exc. VAT)
  • RS Stock No. 414-415
Each (In a Pack of 10)
£1.008(exc. VAT)
Better World
  • RS Stock No. 236-6824
  • Mfr. Part No. 1SDA068574R1 XT4L 160 Ekip LS/I 160A FF
Each
£1,185.40(exc. VAT)
  • RS Stock No. 260-8121
  • Mfr. Part No. C40N3
Each
£774.47(exc. VAT)
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