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. 438-863
  • Mfr. Part No. M9L22480
Each
£652.94(exc. VAT)
  • RS Stock No. 517-6629P
  • Mfr. Part No. RXEF040
Each (Supplied in a Bag)
£0.39(exc. VAT)
  • RS Stock No. 339-380
  • Mfr. Part No. SED100304S
Each
£371.57(exc. VAT)
  • RS Stock No. 182-4048
Each
£6.84(exc. VAT)
Better World
  • RS Stock No. 212-8935
  • Mfr. Part No. 5SL6301-7
Each
£77.12(exc. VAT)
  • RS Stock No. 602-128
  • Mfr. Part No. MMN313
Each
£330.74(exc. VAT)
  • RS Stock No. 231-9959
  • Mfr. Part No. 2CSR272001R1634 DS202 M AC-C63/0,03
Each
£194.34(exc. VAT)
  • RS Stock No. 195-8748
  • Mfr. Part No. NIS6150MT1TXG
Each (On a Reel of 3000)
£0.446(exc. VAT)
  • RS Stock No. 169-9392
  • Mfr. Part No. S501-4-R
1 Bag of 1000
£169.26(exc. VAT)
Better World
  • RS Stock No. 282-6547
  • Mfr. Part No. PV-63A-01XL-B-15
Each
£310.22(exc. VAT)
  • RS Stock No. 250-4446
  • Mfr. Part No. 1SCA022697R9430
1 Box of 3
£84.18(exc. VAT)
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  • Mfr. Part No. 1110987
Each
£20.60(exc. VAT)
Better World
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Each
£113.61(exc. VAT)
Better World
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  • Mfr. Part No. 3VA1340-4FF42-0AA0
Each
£1,185.18(exc. VAT)
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  • Mfr. Part No. 0217.080MXP
Each (In a Pack of 10)
£1.024(exc. VAT)
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  • Mfr. Part No. 5TE4811
Each
£42.68(exc. VAT)
  • RS Stock No. 375-9597
  • Mfr. Part No. E213996C
Each (In a Pack of 3)
£6.923(exc. VAT)
Better World
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  • Mfr. Part No. 3VA1463-5EF32-0AA0
Each
£1,355.27(exc. VAT)
  • RS Stock No. 253-624
  • Mfr. Part No. 265993 NZMH4-4-VE1250
Each
£8,090.99(exc. VAT)
Better World
  • RS Stock No. 270-3500
  • Mfr. Part No. 3VA1450-4EF32-0AA0
Each
£1,200.19(exc. VAT)
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