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. 241-364
  • Mfr. Part No. 16NHM000B-690
1 Pack of 3
£19.06(exc. VAT)
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  • Mfr. Part No. 3VA2563-6JP42-0AA0
Each
£2,885.87(exc. VAT)
  • RS Stock No. 242-950
  • Mfr. Part No. 187449 PFIM-25/2/003-G/F
Each
£150.51(exc. VAT)
  • RS Stock No. 136-0519
  • Mfr. Part No. D1018627 / FR22GR69V63T
Each (In a Box of 10)
£24.127(exc. VAT)
  • RS Stock No. 221-5644
  • Mfr. Part No. 3-128-327
Each
£14.20(exc. VAT)
  • RS Stock No. 169-9501
  • Mfr. Part No. SR-5-3-15A-BK
Each (In a Bag of 200)
£0.465(exc. VAT)
  • RS Stock No. 225-5964
  • Mfr. Part No. 2CCF019644R0001 S802PV-SP8 - 5 kA
Each
£184.52(exc. VAT)
  • RS Stock No. 184-9023
  • Mfr. Part No. CPB1006B
Each
£4.99(exc. VAT)
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  • Mfr. Part No. C10H42D100
Each
£1,001.76(exc. VAT)
Better World
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  • Mfr. Part No. KBB40ED2303W
Each
£129.08(exc. VAT)
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  • Mfr. Part No. 4 049 28
Each
£10.24(exc. VAT)
Better World
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Each
£123.45(exc. VAT)
Better World
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  • Mfr. Part No. 5SL4104-6
Each
£20.37(exc. VAT)
  • RS Stock No. 850-7118
  • Mfr. Part No. FWH-150B
Each
£107.79(exc. VAT)
  • RS Stock No. 200-6168
  • Mfr. Part No. A9PE2616
Each
£40.28(exc. VAT)
  • RS Stock No. 303-276
  • Mfr. Part No. 787-3861/200-000
Each
£30.32(exc. VAT)
  • RS Stock No. 655-033
  • Mfr. Part No. LV833662SP
Each
£286.57(exc. VAT)
  • RS Stock No. 266-3170
  • Mfr. Part No. 0 153 40
1 Box of 10
£58.36(exc. VAT)
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  • Mfr. Part No. 3NA7222
Each (In a Pack of 3)
£15.217(exc. VAT)
Better World
  • RS Stock No. 212-1601
  • Mfr. Part No. 2CDS251281R0044
Each
£42.59(exc. VAT)
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