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. 230-1082
  • Mfr. Part No. 264742 PLG4-C4/1N
Each
£13.93(exc. VAT)
  • RS Stock No. 186-3471
  • Mfr. Part No. 2CSS245102R0104
Each
£10.02(exc. VAT)
  • RS Stock No. 184-9025
  • Mfr. Part No. CPB1006C
Each
£4.99(exc. VAT)
  • RS Stock No. 820-7293
  • Mfr. Part No. 00940560ZXA
Each
£63.50(exc. VAT)
  • RS Stock No. 521-2501
Each (In a Pack of 5)
£3.516(exc. VAT)
  • RS Stock No. 188-6978
  • Mfr. Part No. K215128
1 Pack of 10
£13.85(exc. VAT)
Better World
  • RS Stock No. 791-3322
  • Mfr. Part No. A9F54201
Each
£102.92(exc. VAT)
  • RS Stock No. 156-8692
  • Mfr. Part No. DD160
Each
£32.23(exc. VAT)
  • RS Stock No. 229-180
  • Mfr. Part No. C10G8 CYLINDRICAL FUSE 10 x 38 8A GG 500V AC
1 Pack of 10
£6.85(exc. VAT)
  • RS Stock No. 230-2960
  • Mfr. Part No. A211025
1 Pack of 10
£11.06(exc. VAT)
Better World
  • RS Stock No. 791-3332
  • Mfr. Part No. A9F54206
Each
£80.18(exc. VAT)
  • RS Stock No. 787-4120
  • Mfr. Part No. 0287015.PXCN
1 Pack of 10
£2.25(exc. VAT)
  • RS Stock No. 174-0663
  • Mfr. Part No. 0298060.ZXB
1 Pack of 1
£7.67(exc. VAT)
  • RS Stock No. 265-0193
Each
£8.10(exc. VAT)
Better World
  • RS Stock No. 527-9453
  • Mfr. Part No. 2CDS251001R0061 S201-D6
Each
£17.22(exc. VAT)
  • RS Stock No. 227-0710
  • Mfr. Part No. 264280 PFGM-40/2/003
Each
£37.22(exc. VAT)
  • RS Stock No. 521-2652
Each (In a Pack of 5)
£9.906(exc. VAT)
Better World
  • RS Stock No. 231-9651
  • Mfr. Part No. 2CDS211001R0024 SH201-C 2
1 Box of 1
£15.47(exc. VAT)
  • RS Stock No. 273-0854
  • Mfr. Part No. 1658-G21-02-P10-5A
Each
£4.86(exc. VAT)
  • RS Stock No. 265-0195
Each
£9.00(exc. VAT)
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