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.

50826 Products showing for Fuses & Circuit Breakers

645 of 999+
  • RS Stock No. 211-9580
  • Mfr. Part No. 5SM2626-6
Each
£206.48
  • RS Stock No. 178-1172
  • Mfr. Part No. H239138 / BNEUTRALA3
Each (In a Pack of 10)
£2.717
Better World
  • RS Stock No. 202-7049
  • Mfr. Part No. 5SL6332-6
Each
£65.90
  • RS Stock No. 429-407
  • Mfr. Part No. C25H6TM200
Each
£3,065.03
  • RS Stock No. 539-3745
  • Mfr. Part No. 4404.0004
Each
£2.97
  • RS Stock No. 825-5592
  • Mfr. Part No. P1MB1PC16
Each
£16.72
  • RS Stock No. 136-0502
  • Mfr. Part No. C1018557 / FR22GR69V50
Each (In a Box of 10)
£19.869
  • RS Stock No. 627-113
  • Mfr. Part No. 3NB1128-4KK11
1 Pack of 2
£848.28
  • RS Stock No. 155-290
  • Mfr. Part No. 3VA9978-0AB11
Each
£34.09
  • RS Stock No. 254-4819
  • Mfr. Part No. 2882763
Each
£190.31
  • RS Stock No. 200-927
  • Mfr. Part No. 2CDS252001R0804
Each
£118.03
  • RS Stock No. 260-9371
  • Mfr. Part No. C1044V040
Each
£1,311.43
  • RS Stock No. 125-1521
  • Mfr. Part No. 1492-SPM3D030
Each
£68.26
  • RS Stock No. 131-669
  • Mfr. Part No. 2910380
Each
£506.64
  • RS Stock No. 263-820
  • Mfr. Part No. 3VA9377-0TB50
Each
£95.63
  • RS Stock No. 341-596
  • Mfr. Part No. BJF36040
Each
£1,035.98
  • RS Stock No. 759-4745
  • Mfr. Part No. ERBRD1R00X
Each (In a Pack of 10)
£0.119
  • RS Stock No. 721-2994
  • Mfr. Part No. 24571380
1 Kit
£4.58
  • RS Stock No. 259-712
  • Mfr. Part No. 278605 FAZ-K63/1
Each
£71.34
  • RS Stock No. 255-2322
  • Mfr. Part No. 409565
Each
£177.37
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