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.

51028 Products showing for Fuses & Circuit Breakers

630 of 999+
  • RS Stock No. 272-0189
  • Mfr. Part No. 3VA1580-6EF42-0AA0
Each
£2,497.72
  • RS Stock No. 258-731
  • Mfr. Part No. 278533 FAZ-B13/1
Each
£18.11
  • RS Stock No. 245-9164P
  • Mfr. Part No. MF-LSMF330/24X-2
Each (Supplied on a Reel)
£1.133
  • RS Stock No. 181-8614
  • Mfr. Part No. 125MJ31-7
Each (In a Box of 10)
£51.043
  • RS Stock No. 597-901
  • Mfr. Part No. NFN100
Each
£44.18
  • RS Stock No. 244-683
  • Mfr. Part No. 174537 AZ-4-B63
Each
£471.94
Better World
  • RS Stock No. 232-2286
  • Mfr. Part No. 5SY4130-7
Each
£18.74
Better World
  • RS Stock No. 271-9715
  • Mfr. Part No. 3VA1112-4FD46-0AA0
Each
£456.76
  • RS Stock No. 203-1985
  • Mfr. Part No. 3NW6005-4
Each (In a Pack of 20)
£9.429
  • RS Stock No. 144-4769
  • Mfr. Part No. NGN401
Each
£266.66
  • RS Stock No. 771-0505
  • Mfr. Part No. 3062773
Each
£9.64
Better World
  • RS Stock No. 239-4977
Each (In a Pack of 10)
£14.478
  • RS Stock No. 257-460
  • Mfr. Part No. 3VA5322-6EC31-0AA0
Each
£1,098.69
  • RS Stock No. 110-314
  • Mfr. Part No. C1644B160
Each
£1,362.56
  • RS Stock No. 201-6970
  • Mfr. Part No. 2CSR275180R1065 DS201 M B6 A30
Each
£139.96
  • RS Stock No. 263-783
  • Mfr. Part No. 3VA9671-0WE40
Each
£95.48
  • RS Stock No. 255-167
  • Mfr. Part No. 260038 NZM2-XKSA
Each
£22.53
Better World
  • RS Stock No. 155-782
  • Mfr. Part No. 3VA2325-7HN42-0AA0
Each
£1,828.50
  • RS Stock No. 769-3375
  • Mfr. Part No. SS-5F-1A-BK
Each (In a Pack of 5)
£0.926
Better World
  • RS Stock No. 746-8065
  • Mfr. Part No. 2CDS254001R0487 S204-K20
Each
£143.82
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