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. 850-8653
  • Mfr. Part No. EZ9D16816
Each
£28.84(exc. VAT)
  • RS Stock No. 563-558
Each (In a Pack of 10)
£0.285(exc. VAT)
Better World
  • RS Stock No. 746-7716
  • Mfr. Part No. 2CDS252001R0164 S202-C16
Each
£42.23(exc. VAT)
  • RS Stock No. 922-8721
  • Mfr. Part No. 236217 PKNM-16/1N/C/003-A-MW
Each
£111.48(exc. VAT)
Better World
  • RS Stock No. 212-1616
  • Mfr. Part No. 2CDS252280R0025
Each
£41.73(exc. VAT)
  • RS Stock No. 721-1601
Each (In a Pack of 10)
£0.955(exc. VAT)
  • RS Stock No. 703-8364
  • Mfr. Part No. C10G0-5
1 Pack of 10
£9.83(exc. VAT)
Better World
  • RS Stock No. 132-071
  • Mfr. Part No. 2CDS272001R0104 S202M-C10
Each
£52.80(exc. VAT)
Better World
  • RS Stock No. 188-4687
  • Mfr. Part No. DF101
Each
£7.04(exc. VAT)
  • RS Stock No. 207-216
  • Mfr. Part No. EZ9E4MCU
Each
£80.65(exc. VAT)
  • RS Stock No. 418-710
  • Mfr. Part No. SSD6
Each (In a Pack of 5)
£2.402(exc. VAT)
  • RS Stock No. 265-0189
Each
£8.10(exc. VAT)
  • RS Stock No. 414-673
  • Mfr. Part No. TIA32M50
Each (In a Pack of 5)
£11.934(exc. VAT)
  • RS Stock No. 191-9454
  • Mfr. Part No. 2CSS245102R0014
Each
£18.64(exc. VAT)
  • RS Stock No. 922-7037
  • Mfr. Part No. 278580 FAZ-D10/1
Each
£23.96(exc. VAT)
  • RS Stock No. 563-592
Each (In a Pack of 10)
£0.357(exc. VAT)
  • RS Stock No. 537-1177
  • Mfr. Part No. S500-2-R
1 Pack of 10
£1.80(exc. VAT)
  • RS Stock No. 188-6984
  • Mfr. Part No. S218194
1 Pack of 10
£13.85(exc. VAT)
  • RS Stock No. 413-210
Each (In a Pack of 10)
£1.02(exc. VAT)
  • RS Stock No. 563-457
1 Pack of 10
£2.78(exc. VAT)
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