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

35151 Products showing for Fuses & Circuit Breakers

1720 of 999+
In Stock
Schneider Electric Acti9 Acti9 iC60 MCB, 1P, 500mA Curve D, 50 kA Breaking Capacity
  • RS Stock No. 130-730
  • Mfr. Part No. A9F75170
Each
$300.30(exc. GST)
New product - Preorder today
Fuse - Strip 60 w/ Housing 48VDC, 150A
  • RS Stock No. 522-970
  • Mfr. Part No. 157.5701.6151
1 Bag of 25
$913.66(exc. GST)
Temporarily out of stock
Lovato 32A Rail Mount Fuse Holder for 10 x 38mm Fuse, 1P, 690V ac
  • RS Stock No. 216-8276
  • Mfr. Part No. FB01D1P
Each
$20.74(exc. GST)
Temporarily out of stock
Eaton IZMX/INX Electronic Circuit Breaker 1kA , Fixed
  • RS Stock No. 127-706
  • Mfr. Part No. 183338 IZMX16H3-V10F-1
Each
$12,207.43(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT NSX Circuit breaker 4P 125A, Breaking Capacity 36 KA
  • RS Stock No. 119-464
  • Mfr. Part No. C16F6TM125
Each
$3,689.90(exc. GST)
Currently unavailable
Schneider Electric EasyPact Electronic Circuit Breaker 100A, Fixed
  • RS Stock No. 122-524
  • Mfr. Part No. LV510687
Each
$586.98(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT NSX Circuit breaker 2P 160A, Breaking Capacity 70 KA, Fixed Mount
  • RS Stock No. 119-278
  • Mfr. Part No. C16S2TM160
Each
$3,377.17(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB 4P 600A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 249-877
  • Mfr. Part No. 3VA6560-5HN46-0AA0
Each
$11,100.11(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 25A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-3679
  • Mfr. Part No. 3VA2025-7JP42-0AA0
Each
$4,563.86(exc. GST)
Temporarily out of stock
Schneider Electric Resi9 R9F2 MCB, 3P, 63A Curve C, 400V AC, 6 kA Breaking Capacity
  • RS Stock No. 212-144
  • Mfr. Part No. R9F24363
Each
$598.39(exc. GST)
Temporarily out of stock
Socomec 100A F Cartridge Fuse, 22 x 58mm
  • RS Stock No. 223-2762
  • Mfr. Part No. 170L2299
Each (In a Pack of 10)
$54.836(exc. GST)
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 250A 3VA, 3 channels
  • RS Stock No. 156-698
  • Mfr. Part No. 3VA2325-6HK32-0AA0
Each
$4,952.71(exc. GST)
Temporarily out of stock
RS PRO SMD Non Resettable Fuse 25A, 250V
  • RS Stock No. 182-3991P
Each (Supplied in a Box)
$5.318(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 2.5kA Ekip Hi-Touch LSI, 3 channels
  • RS Stock No. 259-4303
  • Mfr. Part No. 1SDA072439R1
Each
$35,385.61(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 4kA 1SDA07, 3 channels
  • RS Stock No. 259-4379
  • Mfr. Part No. 1SDA072560R1
Each
$56,683.84(exc. GST)
In Stock
Circuit-breaker/thermal 20 A
  • RS Stock No. 577-469
  • Mfr. Part No. 2-5700-IG2-P10-DD-20A
Each
$36.65(exc. GST)
In Stock
Schurter SMD Non Resettable Fuse 1A, 125 V dc, 250V ac
  • RS Stock No. 736-0740P
  • Mfr. Part No. 3403.0166.24
Each (Supplied on a Reel)
$1.121(exc. GST)
Currently unavailable
Schneider Electric EasyPact Electronic Circuit Breaker 40A, Fixed
  • RS Stock No. 122-364
  • Mfr. Part No. LV510503
Each
$288.94(exc. GST)
Temporarily out of stock
Socomec 25A F Cartridge Fuse, 22 x 58mm
  • RS Stock No. 223-2846
  • Mfr. Part No. 60630025
Each (In a Pack of 10)
$21.831(exc. GST)
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 250A 3VA, 4 channels
  • RS Stock No. 156-722
  • Mfr. Part No. 3VA2325-5HK42-0AA0
Each
$5,560.52(exc. GST)
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