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. 647-8033P
  • Mfr. Part No. MF-SM100-2
Each (Supplied on a Reel)
£0.22(exc. VAT)
  • RS Stock No. 866-3454
  • Mfr. Part No. 0031.1693
Each (In a Pack of 100)
£1.565(exc. VAT)
  • RS Stock No. 339-683
  • Mfr. Part No. SEA9APN27
Each
£398.43(exc. VAT)
  • RS Stock No. 733-4870
  • Mfr. Part No. 3404.0115.22
Each (In a Bag of 5)
£0.612(exc. VAT)
Better World
  • RS Stock No. 209-7510
  • Mfr. Part No. 5SV6016-6GV13
Each (In a Pack of 12)
£150.096(exc. VAT)
  • RS Stock No. 282-6209
  • Mfr. Part No. FWE-80A
Each
£118.66(exc. VAT)
  • RS Stock No. 849-5762
  • Mfr. Part No. GMC-3-15-R
Each
£0.93(exc. VAT)
Better World
  • RS Stock No. 231-9653
  • Mfr. Part No. 2CDS211001R0254 SH201-C 25
1 Box of 1
£14.75(exc. VAT)
  • RS Stock No. 654-818
  • Mfr. Part No. IL1003P36
Each
£507.57(exc. VAT)
  • RS Stock No. 245-9135
  • Mfr. Part No. MF-LSMF125/33X-2
Each (On a Tape of 10)
£0.431(exc. VAT)
  • RS Stock No. 178-1099
  • Mfr. Part No. W1019264 / BTIA69V63
Each (In a Pack of 10)
£11.11(exc. VAT)
  • RS Stock No. 203-2108
  • Mfr. Part No. 3ND1824
Each (In a Pack of 3)
£9.787(exc. VAT)
  • RS Stock No. 183-3639
  • Mfr. Part No. 2CSF204123R1400
Each
£185.85(exc. VAT)
  • RS Stock No. 611-0204
Each (In a Pack of 10)
£1.599(exc. VAT)
  • RS Stock No. 703-2650P
  • Mfr. Part No. 8020.0605.PT
Each (Supplied in a Box)
£1.07(exc. VAT)
  • RS Stock No. 180-6115
  • Mfr. Part No. 0 133 04
Each (In a Box of 10)
£1.85(exc. VAT)
Better World
  • RS Stock No. 211-6068
  • Mfr. Part No. 3VA2163-5HN46-0AA0
Each
£723.87(exc. VAT)
  • RS Stock No. 141-145
  • Mfr. Part No. 2CCS883001R0104
Each
£141.00(exc. VAT)
  • RS Stock No. 156-8759
  • Mfr. Part No. 10LCT
Each (In a Pack of 5)
£2.532(exc. VAT)
  • RS Stock No. 852-7257
  • Mfr. Part No. AGC-12-R
Each
£0.79(exc. VAT)
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