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.

50915 Products showing for Fuses & Circuit Breakers

490 of 999+
  • RS Stock No. 191-4169
  • Mfr. Part No. SF-2410FP0315T-2
Each (On a Reel of 1000)
£0.694(exc. VAT)
  • RS Stock No. 231-867
  • Mfr. Part No. 115454 NZMH1-M100
Each
£537.41(exc. VAT)
  • RS Stock No. 245-9203
  • Mfr. Part No. SF-0603SPA300R-2
Each (On a Reel of 5000)
£0.44(exc. VAT)
  • RS Stock No. 204-359
  • Mfr. Part No. 2CDS272061R0408
Each
£224.92(exc. VAT)
  • RS Stock No. 269-7121
  • Mfr. Part No. 3VA9214-0JC13
Each (In a Pack of 4)
£26.348(exc. VAT)
  • RS Stock No. 610-570
  • Mfr. Part No. 5SY4215-6
Each
£60.08(exc. VAT)
  • RS Stock No. 256-889
  • Mfr. Part No. 281696 BC-U-1/5-TW-ECO
Each
£20.92(exc. VAT)
Better World
  • RS Stock No. 219-8425
  • Mfr. Part No. NLGF36600U31XTW
Each
£3,635.54(exc. VAT)
  • RS Stock No. 286-4960
  • Mfr. Part No. 1SLM006500A2215
Each
£89.24(exc. VAT)
Better World
  • RS Stock No. 271-9606
  • Mfr. Part No. 3VA10632ED360AA0
Each
£161.86(exc. VAT)
  • RS Stock No. 140-784
  • Mfr. Part No. 2CCS881001R0324
Each
£39.47(exc. VAT)
  • RS Stock No. 259-3315
  • Mfr. Part No. 1SDA071223R1
Each
£20,221.39(exc. VAT)
Better World
  • RS Stock No. 746-7851
  • Mfr. Part No. 2CDS252001R0101 S202-D10
Each
£47.25(exc. VAT)
  • RS Stock No. 377-2146
  • Mfr. Part No. 3821160041
Each (In a Pack of 10)
£1.18(exc. VAT)
  • RS Stock No. 238-3843
  • Mfr. Part No. B00004A0024
Each
£2.50(exc. VAT)
  • RS Stock No. 218-8908
  • Mfr. Part No. 1694-PM12
Each (In a Pack of 4)
£48.47(exc. VAT)
  • RS Stock No. 212-022
  • Mfr. Part No. R9D01625
Each
£60.40(exc. VAT)
  • RS Stock No. 261-2890
  • Mfr. Part No. 140G-H-MTL63
Each
£84.62(exc. VAT)
  • RS Stock No. 174-0397
  • Mfr. Part No. RF1182-000
1 Reel of 7500
£1,427.34(exc. VAT)
  • RS Stock No. 174-0845
  • Mfr. Part No. RF2561-000
Each (In a Pack of 10)
£0.555(exc. VAT)
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