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. 256-4179
  • Mfr. Part No. GV3P406
Each
£371.83(exc. VAT)
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  • Mfr. Part No. DDS08188SPMS
Each
£223.61(exc. VAT)
  • RS Stock No. 174-0647
  • Mfr. Part No. 65900000009
Each (In a Pack of 10)
£1.228(exc. VAT)
  • RS Stock No. 541-4189
  • Mfr. Part No. 0218.160MXP
Each (In a Pack of 10)
£1.269(exc. VAT)
  • RS Stock No. 101-739
Each
£72.06(exc. VAT)
  • RS Stock No. 517-6815P
  • Mfr. Part No. RUEF250
Each (Supplied in a Bag)
£0.42(exc. VAT)
  • RS Stock No. 412-986A
  • Mfr. Part No. TDC180-1A
Each (In a Pack of 100)
£0.412(exc. VAT)
  • RS Stock No. 111-3546
  • Mfr. Part No. PYDN-15.5-080Y
Each
£3.72(exc. VAT)
  • RS Stock No. 231-922
  • Mfr. Part No. 111731 NZMH3-VE400-BT
Each
£2,670.92(exc. VAT)
  • RS Stock No. 123-034
  • Mfr. Part No. 171130 Z-BB/UL18/3P1MU/57
Each
£24.62(exc. VAT)
  • RS Stock No. 231-9956
  • Mfr. Part No. 2CSR256140R1104 DS203NC C10 A30
Each
£184.56(exc. VAT)
Better World
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Each
£10.17(exc. VAT)
  • RS Stock No. 849-5661
  • Mfr. Part No. HTB-24M-R
Each
£11.26(exc. VAT)
  • RS Stock No. 203-089
  • Mfr. Part No. 2CDS251001R0518
Each
£36.05(exc. VAT)
  • RS Stock No. 261-883
  • Mfr. Part No. C1515
1 Pack of 10
£34.26(exc. VAT)
  • RS Stock No. 173-8050
  • Mfr. Part No. 8020.5011.G
1 Box of 1000
£466.44(exc. VAT)
  • RS Stock No. 435-453
  • Mfr. Part No. 2CCG001241R0001
Each
£208.71(exc. VAT)
  • RS Stock No. 599-913
  • Mfr. Part No. NKN310
Each
£174.28(exc. VAT)
  • RS Stock No. 123-035
  • Mfr. Part No. 171131 Z-BB/UL25/1P1MU/57
Each
£14.16(exc. VAT)
  • RS Stock No. 178-1068
  • Mfr. Part No. Z226319 / BTKF42V250
Each
£47.28(exc. VAT)
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