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.

Circuit Breakers
Circuit Breakers
Earth & Lightning Protection
Earth & Lightning Protection
Fuse Holders & Accessories
Fuse Holders & Accessories
Fuses
Fuses
Fuses - PCB
Fuses - PCB

46578 Products showing for Fuses & Circuit Breakers

2239 / 999+
Better World
  • RS Stock No. 270-4047
  • Mfr. Part No. 3VA2110-8KQ42-0AA0
Each
MYR12,001.65
  • RS Stock No. 259-3946
  • Mfr. Part No. 1SDA071990R1
Each
MYR231,107.49
Better World
  • RS Stock No. 224-7851
  • Mfr. Part No. 3VA1140-4ED16-0AA0
Each
MYR892.77
  • RS Stock No. 259-4106
  • Mfr. Part No. 1SDA072213R1
Each
MYR24,680.16
  • RS Stock No. 259-3666
  • Mfr. Part No. 1SDA071639R1
Each
MYR64,490.91
Better World
  • RS Stock No. 209-6757
  • Mfr. Part No. 3VA1112-5EE36-0AA0
Each
MYR3,953.02
  • RS Stock No. 217-6362
  • Mfr. Part No. 2800864
Each
MYR235.69
  • RS Stock No. 231-9289
  • Mfr. Part No. 1SDA062169R1 T7-M-X1
1 Box of 1
MYR681.39
  • RS Stock No. 188-1676
  • Mfr. Part No. ULC256A18A
Each
MYR989.69
Better World
  • RS Stock No. 271-9879
  • Mfr. Part No. 3VA1132-3ED46-0AA0
Each
MYR2,272.48
Better World
  • RS Stock No. 210-1714
  • Mfr. Part No. 3VA2110-5KP32-0AA0
Each
MYR6,349.19
Better World
  • RS Stock No. 776-2897
  • Mfr. Part No. A9V35263
Each
MYR3,063.20
  • RS Stock No. 201-5504
  • Mfr. Part No. 2800856
Each
MYR240.99
Better World
  • RS Stock No. 272-0197
  • Mfr. Part No. 3VA2116-8JQ42-0AA0
Each
MYR14,881.60
  • RS Stock No. 260-8164
  • Mfr. Part No. C40W31M320
Each
MYR21,473.63
Better World
  • RS Stock No. 209-7468
  • Mfr. Part No. 5SL4408-6
Each
MYR797.41
Better World
  • RS Stock No. 212-8916
  • Mfr. Part No. 5SY7520-7
Each
MYR410.39
Better World
  • RS Stock No. 270-4736
  • Mfr. Part No. 3VA2163-7HL32-0AA0
Each
MYR5,013.14
  • RS Stock No. 259-3621
  • Mfr. Part No. 1SDA071597R1
Each
MYR60,309.17
Better World
  • RS Stock No. 270-3625
  • Mfr. Part No. 3VA2010-8KQ32-0AA0
Each
MYR11,024.86
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