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

94 of 999+
Temporarily out of stock
Schneider Electric, ComPacT New Generation MCCB 3P 100A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 207-213
  • Mfr. Part No. C11H34V100L
Each
$4,402.37(exc. GST)
Temporarily out of stock
Schneider Electric, Compact MCCB 3P 630A, Breaking Capacity 75 kA
  • RS Stock No. 340-874
  • Mfr. Part No. C063B3WM
Each
$8,112.82(exc. GST)
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 630A 3VA2, 3 channels
  • RS Stock No. 156-608
  • Mfr. Part No. 3VA2463-6JP32-0AA0
Each
$8,779.78(exc. GST)
In Stock
Schneider Electric, Wiser, 16A, POWERTAG, Wireless
  • RS Stock No. 341-239
  • Mfr. Part No. CCTFR6730
Each
$140.46(exc. GST)
Temporarily out of stock
Better World
ABB Emax2 Electronic Circuit Breaker 1.25kA Ekip Hi-Touch LSI, 3 channels
  • RS Stock No. 259-3011
  • Mfr. Part No. 1SDA070849R1
Each
$19,973.28(exc. GST)
In Stock
Schneider Electric Linergy Terminal bar for use with Acti 9 Isobar A distribution board, Acti 9 Isobar B distribution
  • RS Stock No. 247-1919
  • Mfr. Part No. 99219
Each
$102.69(exc. GST)
Being discontinued
RS PRO 200mA F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 563-479
Each (In a Pack of 10)
$1.631(exc. GST)
In Stock
Littelfuse 10A F Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 787-4306
  • Mfr. Part No. 35421000029
Each (In a Pack of 5)
$3.52(exc. GST)
In Stock
RS PRO 63A NH Fuse, NH000, 415V ac
  • RS Stock No. 221-3678
Each (In a Pack of 3)
$33.253(exc. GST)
Temporarily out of stock
Phoenix Contact 2A F Cartridge Fuse, 5 x 20mm
  • RS Stock No. 254-4835
  • Mfr. Part No. 2939027
Each (In a Pack of 10)
$0.961(exc. GST)
In Stock
Resi9 Busbar, 230V ac, 18mm Pitch
  • RS Stock No. 585-420
  • Mfr. Part No. R9PXH210
1 Pack of 5
$63.44(exc. GST)
Temporarily out of stock
Siemens SENTRON 5SY7 MCB, 4P, 25A Curve D, 400V AC, 60V DC, 25 kA Breaking Capacity
  • RS Stock No. 610-440
  • Mfr. Part No. 5SY7425-8
Each
$634.49(exc. GST)
Temporarily out of stock
ABB Busbar for use with Miniature Circuit Breakers
  • RS Stock No. 250-4774
  • Mfr. Part No. 2CDL701301R1500
1 Box of 10
$191.42(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 2P 80A, Breaking Capacity 5 kA, Fixed Mount
  • RS Stock No. 341-507
  • Mfr. Part No. C10F2TM080
Each
$1,531.82(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 63A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 270-3848
  • Mfr. Part No. 3VA2063-6JQ32-0AA0
Each
$4,321.08(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 125A, Breaking Capacity 70 kA, DIN Rail Mount
  • RS Stock No. 271-9737
  • Mfr. Part No. 3VA1112-6ED36-0AA0
Each
$1,732.37(exc. GST)
Temporarily out of stock
Siemens SENTRON Plug for use with Circuit Breaker 3WL10 / 3VA27
  • RS Stock No. 265-649
  • Mfr. Part No. 3VW9011-0AA53
Each
$320.67(exc. GST)
In Stock
RS PRO 32A Slotted Tag Fuse, A1, 250 V dc, 415V ac, 44.5mm
  • RS Stock No. 221-3697
1 Bag of 5
$81.26(exc. GST)
In Stock
Siemens Busbar
  • RS Stock No. 203-3278
  • Mfr. Part No. 8US1251-5DM07
Each (In a Pack of 6)
$125.933(exc. GST)
In Stock
ABB, Protecta MCCB 3P 63A, Breaking Capacity 36 kA, DIN Rail Mount
  • RS Stock No. 831-9163
  • Mfr. Part No. 1SDA067414R1 XT1N 160 TMD 63-630 3p F F
Each
$480.87(exc. GST)
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