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

34912 Products showing for Fuses & Circuit Breakers

1738 of 999+
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  • Mfr. Part No. 20-209-34/100A
Each
$131.84(exc. GST)
  • RS Stock No. 257-389
  • Mfr. Part No. 3VA5340-1BB31-0AA0
Each
$6,941.59(exc. GST)
  • RS Stock No. 259-3907
  • Mfr. Part No. 1SDA071936R1
Each
$120,801.73(exc. GST)
  • RS Stock No. 275-0209
  • Mfr. Part No. IEG66-1-62-50.0-AZ-01-V
1 Box of 5
$1,213.81(exc. GST)
  • RS Stock No. 428-842
  • Mfr. Part No. BJF16080
Each
$1,580.77(exc. GST)
  • RS Stock No. 144-073
  • Mfr. Part No. 3NA6142-4
1 Pack of 3
$118.12(exc. GST)
Better World
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  • Mfr. Part No. 3VA2010-7KQ32-0AA0
Each
$5,243.61(exc. GST)
  • RS Stock No. 157-439
  • Mfr. Part No. 5SF6015
1 Pack of 2
$119.99(exc. GST)
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  • Mfr. Part No. J213609
Each (In a Pack of 10)
$10.909(exc. GST)
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  • Mfr. Part No. BJF46125
Each
$2,957.02(exc. GST)
Better World
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  • Mfr. Part No. 2CDS251001R0011 S201-D1
Each
$44.29(exc. GST)
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Each
$126.68(exc. GST)
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  • Mfr. Part No. 144903 ZFS62/77-NZM-NA
Each
$17.78(exc. GST)
Better World
  • RS Stock No. 157-363
  • Mfr. Part No. 3VA2216-8JP32-0AA0
Each
$6,621.55(exc. GST)
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  • Mfr. Part No. MFS716
Each (In a Pack of 12)
$52.013(exc. GST)
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  • Mfr. Part No. E1014580 / FR10GR69V20
Each (In a Box of 10)
$28.926(exc. GST)
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  • Mfr. Part No. 25D16Q
1 Pack of 10
$59.08(exc. GST)
Better World
  • RS Stock No. 178-8163
  • Mfr. Part No. LV426268
Each
$1,057.23(exc. GST)
  • RS Stock No. 777-7505
  • Mfr. Part No. 0034.3124
Each (In a Pack of 10)
$1.207(exc. GST)
  • RS Stock No. 276-9259
  • Mfr. Part No. LV432465
Each
$8,310.15(exc. GST)