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

6 of 999+
  • RS Stock No. 488-6296
  • Mfr. Part No. 2CDS251001R0064 S201-C6
Each
£16.45(exc. VAT)
  • RS Stock No. 414-623
  • Mfr. Part No. NIT10
Each (In a Pack of 5)
£5.478(exc. VAT)
  • RS Stock No. 521-2472
Each (In a Pack of 5)
£3.516(exc. VAT)
  • RS Stock No. 703-8471
  • Mfr. Part No. C22G80
1 Pack of 10
£36.16(exc. VAT)
  • RS Stock No. 209-9276
1 Pack of 10
£10.20(exc. VAT)
  • RS Stock No. 139-978
  • Mfr. Part No. DEO200
Each
£35.55(exc. VAT)
  • RS Stock No. 574-835
  • Mfr. Part No. X200.799.01 (N.1.480.08) CLEAR SPLASH COVER
Each
£4.02(exc. VAT)
  • RS Stock No. 415-109
  • Mfr. Part No. NIT2
Each (In a Pack of 5)
£5.478(exc. VAT)
  • RS Stock No. 849-6500
  • Mfr. Part No. EUC1P6C
Each
£6.92(exc. VAT)
  • RS Stock No. 490-157
  • Mfr. Part No. 236744 PXF-25/2/003-A
Each
£38.05(exc. VAT)
Better World
  • RS Stock No. 776-2730
  • Mfr. Part No. A9XPH324
Each
£64.47(exc. VAT)
  • RS Stock No. 229-266
  • Mfr. Part No. C10G25 CYLINDRICAL FUSE 10 x 38 25A GG 500V AC
1 Pack of 10
£6.85(exc. VAT)
  • RS Stock No. 413-349
  • Mfr. Part No. AAO16
1 Pack of 5
£29.14(exc. VAT)
  • RS Stock No. 849-6572
  • Mfr. Part No. EUC3P1C
Each
£22.40(exc. VAT)
Better World
  • RS Stock No. 238-3411
  • Mfr. Part No. A9P71610
Each
£26.13(exc. VAT)
  • RS Stock No. 265-0206
Each
£28.37(exc. VAT)
  • RS Stock No. 230-1084
  • Mfr. Part No. 264743 PLG4-C6/1N
Each
£13.51(exc. VAT)
  • RS Stock No. 849-6544
  • Mfr. Part No. EUC2P6C
Each
£15.36(exc. VAT)
  • RS Stock No. 426-3132
1 Pack of 5
£30.32(exc. VAT)
Better World
  • RS Stock No. 124-3182
  • Mfr. Part No. 5SY4363-7
Each
£91.37(exc. VAT)
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