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.

50915 Products showing for Fuses & Circuit Breakers

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  • RS Stock No. 147-963
  • Mfr. Part No. 3VA5212-6ED31-1AA0
Each
£753.00(exc. VAT)
  • RS Stock No. 213-2563
  • Mfr. Part No. 5ST3644
Each (In a Pack of 10)
£12.575(exc. VAT)
  • RS Stock No. 123-300
  • Mfr. Part No. 170751 FRBMM-D13/3/01-A
Each
£156.47(exc. VAT)
Better World
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  • Mfr. Part No. A9F92120
Each
£101.14(exc. VAT)
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  • Mfr. Part No. 5SY6620-6
Each
£98.33(exc. VAT)
Better World
  • RS Stock No. 211-2334
  • Mfr. Part No. M9F21120
Each
£28.01(exc. VAT)
  • RS Stock No. 236-6881
  • Mfr. Part No. 1SDA101117R1 XT7S1600 EkipDip LS/I 4pFF
Each
£4,527.29(exc. VAT)
Better World
  • RS Stock No. 156-776
  • Mfr. Part No. 3VA2463-7KQ42-0AA0
Each
£3,349.12(exc. VAT)
  • RS Stock No. 229-206
  • Mfr. Part No. ESD40
1 Pack of 20
£325.56(exc. VAT)
  • RS Stock No. 183-3623
  • Mfr. Part No. 2CDS242701R0064
Each
£36.87(exc. VAT)
  • RS Stock No. 211-9587
  • Mfr. Part No. 5SM2647-8
Each
£519.72(exc. VAT)
  • RS Stock No. 259-3656
  • Mfr. Part No. 1SDA071630R1
Each
£9,456.82(exc. VAT)
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  • Mfr. Part No. 13392
Each
£10.30(exc. VAT)
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  • Mfr. Part No. 3404.0116.22
Each (On a Reel of 750)
£0.415(exc. VAT)
  • RS Stock No. 300-018
  • Mfr. Part No. 5SJ4130-6HG40
Each
£38.19(exc. VAT)
  • RS Stock No. 176-9626
  • Mfr. Part No. F204B-125/0.03
Each
£5,337.60(exc. VAT)
  • RS Stock No. 127-549
  • Mfr. Part No. 183475 IZMX16N3-P08W-1
Each
£6,055.11(exc. VAT)
  • RS Stock No. 123-035
  • Mfr. Part No. 171131 Z-BB/UL25/1P1MU/57
Each
£14.16(exc. VAT)
  • RS Stock No. 221-3659
Each
£23.09(exc. VAT)
Better World
  • RS Stock No. 791-3206
  • Mfr. Part No. A9F53225
Each
£76.17(exc. VAT)
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