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. 626-966
  • Mfr. Part No. 3NE7648-1U
1 Pack of 2
£716.75(exc. VAT)
  • RS Stock No. 173-8117
  • Mfr. Part No. 3404.2421.22
1 Reel of 1000
£895.77(exc. VAT)
  • RS Stock No. 630-899
  • Mfr. Part No. X090525Q
1 Box of 10
£5.86(exc. VAT)
  • RS Stock No. 226-0498
  • Mfr. Part No. 1119259
Each (In a Pack of 12)
£11.781(exc. VAT)
  • RS Stock No. 783-3318
  • Mfr. Part No. 70-007-65/2.5A
Each (In a Pack of 10)
£0.522(exc. VAT)
  • RS Stock No. 270-4822
  • Mfr. Part No. 3VA2563-7HL32-0AA0
Each
£1,691.53(exc. VAT)
  • RS Stock No. 435-380
  • Mfr. Part No. 2CCS893001R0631 S803N-D63
Each
£217.09(exc. VAT)
Better World
  • RS Stock No. 156-638
  • Mfr. Part No. 3VA2463-8HK42-0AA0
Each
£2,847.34(exc. VAT)
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  • Mfr. Part No. PTSLR18126V500
Each (In a Pack of 10)
£0.52(exc. VAT)
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  • Mfr. Part No. 5ST3631
Each (In a Pack of 10)
£4.525(exc. VAT)
  • RS Stock No. 728-8695
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Each
£24.11(exc. VAT)
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Each
£29.41(exc. VAT)
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  • Mfr. Part No. 5TT4462-2
Each
£118.15(exc. VAT)
  • RS Stock No. 535-5973
  • Mfr. Part No. 2CDS271001R0065 S201M-B6
Each
£19.86(exc. VAT)
  • RS Stock No. 627-012
  • Mfr. Part No. 3NW6105-1
1 Pack of 10
£29.70(exc. VAT)
  • RS Stock No. 272-0348
  • Mfr. Part No. 8GK4500-1KK12
Each
£482.37(exc. VAT)
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  • Mfr. Part No. 2CSR275080R3404
Each
£112.03(exc. VAT)
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  • Mfr. Part No. 0313005.HXP
Each (In a Pack of 10)
£0.972(exc. VAT)
  • RS Stock No. 231-9348
  • Mfr. Part No. 1SDA100718R1 XT6N 800 TMA 800-8000 3pFF
Each
£1,692.06(exc. VAT)
  • RS Stock No. 144-4543
  • Mfr. Part No. LS672
Each
£11.41(exc. VAT)
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