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.

50957 Products showing for Fuses & Circuit Breakers

687 of 999+
  • RS Stock No. 123-098
  • Mfr. Part No. 171803 NZM2/3-XUHIV18DC
Each
£173.57
  • RS Stock No. 541-3271
  • Mfr. Part No. 025101.5HAT1L
Each (In a Pack of 10)
£0.819
  • RS Stock No. 140-528
  • Mfr. Part No. 2CCS861001R0067
Each
£102.98
  • RS Stock No. 288-1510
  • Mfr. Part No. LV833753
Each
£72.55
  • RS Stock No. 258-6353
  • Mfr. Part No. AC82ABD
Each (In a Bag of 1000)
£0.721
  • RS Stock No. 255-1651
  • Mfr. Part No. 140G-H3C3-C25
Each
£414.38
Better World
  • RS Stock No. 210-9822
  • Mfr. Part No. LA4FRCP
Each
£107.65
  • RS Stock No. 922-7144
  • Mfr. Part No. 279061 FAZ-C16/4
Each
£155.89
Better World
  • RS Stock No. 245-328
  • Mfr. Part No. 3VA6140-7KM41-2AA0
Each
£1,757.89
  • RS Stock No. 703-8611
  • Mfr. Part No. 6NHG000B
Each
£4.01
  • RS Stock No. 552-327
  • Mfr. Part No. 0997005.WXN
1 Bag of 200
£207.47
Better World
  • RS Stock No. 221-0882
  • Mfr. Part No. A9N18424
Each
£289.77
Better World
  • RS Stock No. 270-4704
  • Mfr. Part No. 3VA2163-0MN32-0AA0
Each
£556.39
  • RS Stock No. 272-0244
  • Mfr. Part No. 5SY7106-6KK13
Each
£31.32
  • RS Stock No. 665-112
  • Mfr. Part No. 3NW3030-0HG
1 Pack of 10
£126.90
  • RS Stock No. 231-9739
  • Mfr. Part No. 2CDS272337R0164 SU202M-C16
1 Box of 1
£86.79
  • RS Stock No. 260-9430
  • Mfr. Part No. C10F3TM025
Each
£488.38
  • RS Stock No. 341-447
  • Mfr. Part No. NLGL36250U31X
Each
£6,070.75
  • RS Stock No. 759-4789P
  • Mfr. Part No. ERBRE2R50V
Each (Supplied on a Reel)
£0.179
  • RS Stock No. 245-096
  • Mfr. Part No. A9V41440
Each
£280.22
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