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. 577-467
  • Mfr. Part No. 2-5700-IG2-P10-DD-16A
Each
£15.94(exc. VAT)
Better World
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  • Mfr. Part No. 3VA2025-8JP46-0AA0
Each
£1,166.06(exc. VAT)
  • RS Stock No. 200-139
  • Mfr. Part No. 2CDS271347R0157
Each
£98.15(exc. VAT)
  • RS Stock No. 183-3623
  • Mfr. Part No. 2CDS242701R0064
Each
£36.87(exc. VAT)
  • RS Stock No. 275-8812
  • Mfr. Part No. KBC10DCS101
Each
£15.81(exc. VAT)
Better World
  • RS Stock No. 270-4671
  • Mfr. Part No. 3VA2140-7KP46-0AA0
Each
£1,371.11(exc. VAT)
  • RS Stock No. 218-1809
  • Mfr. Part No. 3VA9163-0SB20
Each
£23.17(exc. VAT)
  • RS Stock No. 230-281
  • Mfr. Part No. 109777 NZM1-XSVS
Each
£180.27(exc. VAT)
  • RS Stock No. 287-6048
  • Mfr. Part No. R9EFD620
Each
£13.43(exc. VAT)
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  • Mfr. Part No. DCA24
Each
£39.98(exc. VAT)
  • RS Stock No. 239-9992
  • Mfr. Part No. A9TAA2625
Each
£429.27(exc. VAT)
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  • Mfr. Part No. 57025003
Each (In a Pack of 2)
£37.41(exc. VAT)
  • RS Stock No. 258-873
  • Mfr. Part No. 279040 FAZ-B50/4
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£233.84(exc. VAT)
  • RS Stock No. 122-373
  • Mfr. Part No. LV510510
Each
£147.86(exc. VAT)
Better World
  • RS Stock No. 224-7818
  • Mfr. Part No. 3VA1120-3ED16-0AA0
Each
£94.71(exc. VAT)
  • RS Stock No. 229-253
  • Mfr. Part No. 12FDLSJ20
1 Pack of 3
£750.14(exc. VAT)
Better World
  • RS Stock No. 209-5236
  • Mfr. Part No. 3VA2450-5KP32-0AA0
Each
£2,206.09(exc. VAT)
  • RS Stock No. 167-4471
  • Mfr. Part No. MF-PSMF020X-2
Each (On a Reel of 3000)
£0.247(exc. VAT)
Better World
  • RS Stock No. 270-3522
  • Mfr. Part No. 3VA1463-4FF42-0AA0
Each
£1,604.92(exc. VAT)
  • RS Stock No. 244-233
  • Mfr. Part No. 168843 BB-EVF-16/3P-1MU
Each
£53.57(exc. VAT)
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