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. 181-8445
  • Mfr. Part No. STD25
1 Box of 20
£60.35(exc. VAT)
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  • Mfr. Part No. 2CDS200908R0002
Each
£103.59(exc. VAT)
Better World
  • RS Stock No. 219-9274
  • Mfr. Part No. A9F94203
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£108.83(exc. VAT)
  • RS Stock No. 245-087
  • Mfr. Part No. A9D19216
Each
£254.99(exc. VAT)
  • RS Stock No. 150-085
  • Mfr. Part No. 1610-21-30A
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£10.82(exc. VAT)
  • RS Stock No. 541-3265
  • Mfr. Part No. 251001.NRT1L
Each (In a Pack of 10)
£0.814(exc. VAT)
  • RS Stock No. 181-8677
  • Mfr. Part No. CEO40
Each
£32.63(exc. VAT)
  • RS Stock No. 703-8403
  • Mfr. Part No. C14G2
Each (In a Pack of 10)
£1.909(exc. VAT)
  • RS Stock No. 230-0915
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Each
£57.14(exc. VAT)
  • RS Stock No. 780-0002
  • Mfr. Part No. OFAF3H500 1SCA022627R7080
Each
£27.20(exc. VAT)
  • RS Stock No. 878-1637
  • Mfr. Part No. 03455LS7H
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£5.73(exc. VAT)
  • RS Stock No. 276-1540
  • Mfr. Part No. A9Q31340
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£366.78(exc. VAT)
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  • Mfr. Part No. W54-XB1A4A10-15
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£4.59(exc. VAT)
  • RS Stock No. 339-375
  • Mfr. Part No. SEA9PNI2503
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£769.34(exc. VAT)
  • RS Stock No. 703-8677
  • Mfr. Part No. 100NHG0B
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£8.25(exc. VAT)
  • RS Stock No. 173-9804
  • Mfr. Part No. 0034.6619
Each (In a Bag of 100)
£0.336(exc. VAT)
  • RS Stock No. 257-828
  • Mfr. Part No. 280346 BC-O-1/8-ECO
Each
£31.97(exc. VAT)
  • RS Stock No. 769-3738
  • Mfr. Part No. 0452002.NRL
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£1.685(exc. VAT)
  • RS Stock No. 231-9293
  • Mfr. Part No. 1SDA066690R1
Each
£117.80(exc. VAT)
  • RS Stock No. 769-3246
  • Mfr. Part No. SR-5-800MA-BK
Each (In a Pack of 10)
£0.467(exc. VAT)
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