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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Better World
  • RS Stock No. 270-3527
  • Mfr. Part No. 3VA1463-6EF32-0AA0
Each
£1,540.73(exc. VAT)
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  • Mfr. Part No. 0218.315MXP
Each (In a Pack of 10)
£1.273(exc. VAT)
  • RS Stock No. 212-9042
  • Mfr. Part No. 3RA6860-5AC
Each
£23.27(exc. VAT)
  • RS Stock No. 148-586
  • Mfr. Part No. 3VA5130-5EF41-0AA0
Each
£320.50(exc. VAT)
  • RS Stock No. 246-2480
  • Mfr. Part No. 2CCS571001R0205 S401M-B20
Each
£23.13(exc. VAT)
  • RS Stock No. 218-8918
  • Mfr. Part No. 1694-PM222
Each (In a Pack of 4)
£56.57(exc. VAT)
  • RS Stock No. 217-6969
  • Mfr. Part No. 8US1923-1AA01
Each
£10.42(exc. VAT)
Better World
  • RS Stock No. 790-9301
  • Mfr. Part No. A9D19820
Each
£176.55(exc. VAT)
Better World
  • RS Stock No. 225-8795
  • Mfr. Part No. 5SU1656-6KK25
Each
£123.56(exc. VAT)
  • RS Stock No. 613-8173
  • Mfr. Part No. V10-G
1 Bag of 5
£34.74(exc. VAT)
  • RS Stock No. 654-796
  • Mfr. Part No. A9F53402
Each
£223.17(exc. VAT)
  • RS Stock No. 230-3531
  • Mfr. Part No. A219765
Each (In a Pack of 10)
£2.273(exc. VAT)
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  • Mfr. Part No. 3-128-231
Each
£16.16(exc. VAT)
Better World
  • RS Stock No. 211-2370
  • Mfr. Part No. M9F22240
Each
£89.11(exc. VAT)
  • RS Stock No. 304-1981
  • Mfr. Part No. W300054
Each
£82.67(exc. VAT)
  • RS Stock No. 182-1508
  • Mfr. Part No. 16FC
Each (In a Box of 20)
£8.863(exc. VAT)
  • RS Stock No. 273-2313
  • Mfr. Part No. 140MT-C-UXA
Each
£32.25(exc. VAT)
  • RS Stock No. 127-1497
  • Mfr. Part No. 3RV2915-5B
Each
£13.99(exc. VAT)
  • RS Stock No. 613-8189
  • Mfr. Part No. V40-G
1 Bag of 5
£34.12(exc. VAT)
  • RS Stock No. 259-3344
  • Mfr. Part No. 1SDA071250R1
Each
£20,069.97(exc. VAT)
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