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

22 of 999+
  • RS Stock No. 189-5335
  • Mfr. Part No. H1062699 / CMC102
Each
£13.85(exc. VAT)
  • RS Stock No. 418-451
  • Mfr. Part No. CM32FC
Each
£19.07(exc. VAT)
Better World
  • RS Stock No. 196-3628
  • Mfr. Part No. 5SY6206-7
Each
£44.78(exc. VAT)
Better World
  • RS Stock No. 791-3524
  • Mfr. Part No. A9F55220
Each
£78.85(exc. VAT)
  • RS Stock No. 405-9179
  • Mfr. Part No. 2-5700-IG1-P10-DD-000040-20A
Each
£23.00(exc. VAT)
  • RS Stock No. 864-4333
  • Mfr. Part No. 242210 PLSM-C40-MW
Each
£22.61(exc. VAT)
Better World
  • RS Stock No. 850-8603
  • Mfr. Part No. EZ9F16116
Each
£4.03(exc. VAT)
  • RS Stock No. 361-8171
  • Mfr. Part No. 171530.1
1 Pack of 10
£22.92(exc. VAT)
  • RS Stock No. 409-889
  • Mfr. Part No. 1610-21-10A
Each
£10.82(exc. VAT)
Better World
  • RS Stock No. 746-7567
  • Mfr. Part No. 2CDS252001R0105 S202-B10
Each
£42.60(exc. VAT)
  • RS Stock No. 130-868
  • Mfr. Part No. A9D57425
Each
£650.74(exc. VAT)
  • RS Stock No. 414-027
Each (In a Pack of 10)
£1.098(exc. VAT)
  • RS Stock No. 911-3420
Each (In a Pack of 10)
£0.417(exc. VAT)
Better World
  • RS Stock No. 211-2361
  • Mfr. Part No. M9F22132
Each
£28.01(exc. VAT)
  • RS Stock No. 738-2832
  • Mfr. Part No. 0215012.TXP
Each (In a Pack of 10)
£1.474(exc. VAT)
  • RS Stock No. 541-3300
  • Mfr. Part No. 0251005.NRT1L
Each (In a Pack of 10)
£1.134(exc. VAT)
  • RS Stock No. 265-0169
Each
£8.58(exc. VAT)
  • RS Stock No. 181-8473
  • Mfr. Part No. EF355
Each
£35.29(exc. VAT)
Better World
  • RS Stock No. 232-2318
  • Mfr. Part No. 5SY6210-7
Each
£46.06(exc. VAT)
  • RS Stock No. 265-0164
Each
£8.10(exc. VAT)
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