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.

51028 Products showing for Fuses & Circuit Breakers

19 of 999+
  • RS Stock No. 412-986
  • Mfr. Part No. TDC180-1A
1 Pack of 10
£5.82(exc. VAT)
  • RS Stock No. 232-0184
  • Mfr. Part No. 1SDA066433R1 AUX-C 2Q+1SY 250V XT1..XT4
Each
£85.30(exc. VAT)
  • RS Stock No. 276-8738
  • Mfr. Part No. A9R31240
Each
£190.12(exc. VAT)
Better World
  • RS Stock No. 772-1379
  • Mfr. Part No. 5SY4316-8
Each
£83.14(exc. VAT)
  • RS Stock No. 541-2931
  • Mfr. Part No. 0213001.MXP
Each (In a Pack of 10)
£0.983(exc. VAT)
  • RS Stock No. 535-4166
  • Mfr. Part No. 2CDS271001R0204 S201M-C20
Each
£18.34(exc. VAT)
  • RS Stock No. 611-0686
Each (In a Pack of 10)
£0.817(exc. VAT)
  • RS Stock No. 512-6006
  • Mfr. Part No. FX0419
Each
£14.58(exc. VAT)
  • RS Stock No. 203-3911
  • Mfr. Part No. 3RV1915-2CB
Each
£13.05(exc. VAT)
Better World
  • RS Stock No. 746-7845
  • Mfr. Part No. 2CDS252001R0041 S202-D4
Each
£48.58(exc. VAT)
  • RS Stock No. 247-4043
Each (In a Pack of 10)
£0.955(exc. VAT)
Better World
  • RS Stock No. 791-3470
  • Mfr. Part No. A9F55110
Each
£27.08(exc. VAT)
Better World
  • RS Stock No. 790-9193
  • Mfr. Part No. A9D31806
Each
£148.47(exc. VAT)
  • RS Stock No. 622-1124
  • Mfr. Part No. 5SE2350
Each (In a Pack of 10)
£1.616(exc. VAT)
  • RS Stock No. 738-3024
  • Mfr. Part No. 0251003.MRT1L
Each (In a Pack of 10)
£0.856(exc. VAT)
  • RS Stock No. 521-2466
Each (In a Pack of 5)
£3.434(exc. VAT)
  • RS Stock No. 188-6978
  • Mfr. Part No. K215128
1 Pack of 10
£13.85(exc. VAT)
  • RS Stock No. 922-7037
  • Mfr. Part No. 278580 FAZ-D10/1
Each
£23.96(exc. VAT)
  • RS Stock No. 729-2754
  • Mfr. Part No. 2-5700-IG2-P10-DD-000040-6A
Each
£23.00(exc. VAT)
  • RS Stock No. 539-1632
  • Mfr. Part No. 2CDL210001R1660 PS1/60/16
Each
£29.41(exc. VAT)
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