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. 216-4805
  • Mfr. Part No. 3VA2110-6HN36-0AA0
Each
£768.70(exc. VAT)
  • RS Stock No. 252-5303
  • Mfr. Part No. 170M6249
Each
£275.38(exc. VAT)
  • RS Stock No. 275-0415
  • Mfr. Part No. M39019/01-255S
Each
£720.93(exc. VAT)
  • RS Stock No. 173-9813
  • Mfr. Part No. 4400.0056
Each (In a Box of 100)
£5.617(exc. VAT)
Better World
  • RS Stock No. 850-8662
  • Mfr. Part No. EZ9D16840
Each
£28.84(exc. VAT)
  • RS Stock No. 428-828
  • Mfr. Part No. A9N18557
Each
£1,289.60(exc. VAT)
  • RS Stock No. 263-623
  • Mfr. Part No. 3VA9674-0JC44
1 Kit
£453.74(exc. VAT)
  • RS Stock No. 613-374
  • Mfr. Part No. 5TT4121-2
Each
£46.41(exc. VAT)
Better World
  • RS Stock No. 260-307
  • Mfr. Part No. 3VA6340-8KT41-0AA0
Each
£3,273.33(exc. VAT)
Better World
  • RS Stock No. 210-1691
  • Mfr. Part No. 3VA1220-5EF42-0AA0
Each
£762.38(exc. VAT)
  • RS Stock No. 221-3659
Each
£23.09(exc. VAT)
  • RS Stock No. 448-3443
  • Mfr. Part No. M320171
Each
£42.38(exc. VAT)
Better World
  • RS Stock No. 124-7721
  • Mfr. Part No. 5SV3344-6
Each
£146.78(exc. VAT)
  • RS Stock No. 396-398
  • Mfr. Part No. 3NE8018-1
Each (In a Pack of 3)
£54.67(exc. VAT)
  • RS Stock No. 181-8856
  • Mfr. Part No. 50KR85
Each
£7.37(exc. VAT)
  • RS Stock No. 893-8574
  • Mfr. Part No. 20-211-08/200A
Each (In a Pack of 3)
£25.48(exc. VAT)
  • RS Stock No. 847-3361
  • Mfr. Part No. 278752 FAZ-C4/2
Each
£71.24(exc. VAT)
  • RS Stock No. 248-923
  • Mfr. Part No. 187278 AFDD-25/2/B/003-F
Each
£188.78(exc. VAT)
  • RS Stock No. 200-842
  • Mfr. Part No. 2CDS273347R0377
Each
£341.27(exc. VAT)
  • RS Stock No. 414-982
  • Mfr. Part No. GSGB300
Each
£189.75(exc. VAT)
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