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. 806-7376
  • Mfr. Part No. A9R21440
Each
£287.29(exc. VAT)
  • RS Stock No. 177-8129
Each (In a Pack of 20)
£0.692(exc. VAT)
  • RS Stock No. 123-2017
  • Mfr. Part No. 0031.1622
Each
£9.74(exc. VAT)
  • RS Stock No. 563-481
Each (In a Pack of 10)
£0.278(exc. VAT)
Better World
  • RS Stock No. 850-8669
  • Mfr. Part No. EZ9D16832
Each
£28.84(exc. VAT)
  • RS Stock No. 248-4112
  • Mfr. Part No. LV429390
Each
£109.83(exc. VAT)
  • RS Stock No. 181-8886
  • Mfr. Part No. AAO4
Each
£8.84(exc. VAT)
  • RS Stock No. 182-4004
Each (In a Pack of 5)
£7.38(exc. VAT)
  • RS Stock No. 610-9850
Each (In a Pack of 10)
£0.565(exc. VAT)
  • RS Stock No. 703-8471
  • Mfr. Part No. C22G80
1 Pack of 10
£36.16(exc. VAT)
  • RS Stock No. 878-1296
  • Mfr. Part No. 0298300.ZXH
Each
£9.36(exc. VAT)
  • RS Stock No. 272-0242
  • Mfr. Part No. 5ST3062
Each
£59.56(exc. VAT)
  • RS Stock No. 911-3565
Each (In a Pack of 10)
£0.309(exc. VAT)
  • RS Stock No. 611-0692
Each (In a Pack of 10)
£1.244(exc. VAT)
  • RS Stock No. 181-8692
  • Mfr. Part No. CEO50
Each
£7.14(exc. VAT)
  • RS Stock No. 413-282
  • Mfr. Part No. NITD6
Each (In a Pack of 5)
£3.996(exc. VAT)
Better World
  • RS Stock No. 191-6086
  • Mfr. Part No. A9P22604
Each
£48.63(exc. VAT)
  • RS Stock No. 787-4303
  • Mfr. Part No. 0314012.HXP
Each (In a Pack of 5)
£0.516(exc. VAT)
  • RS Stock No. 247-9206
  • Mfr. Part No. NITD25
Each (In a Pack of 5)
£5.048(exc. VAT)
  • RS Stock No. 396-174
  • Mfr. Part No. 5SB231
Each (In a Pack of 5)
£1.016(exc. VAT)
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