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

79 of 999+
In Stock
Mersen 32A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 304-1048
  • Mfr. Part No. A214107
Each (In a Pack of 10)
$3.442(exc. GST)
Temporarily out of stock
Hager NQN MCB, 4P, 50A Curve B, 415V AC, 15 kA Breaking Capacity
  • RS Stock No. 597-940
  • Mfr. Part No. NQN450
Each
$1,056.80(exc. GST)
Temporarily out of stock
Siemens SENTRON 5SY Circuit Breaker, 4P, 10A Curve B, 440V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 664-348
  • Mfr. Part No. 5SY6410-6
Each
$278.58(exc. GST)
In Stock
Better World
Schneider Electric Acti 9 C60H-DC MCB, 2P, 16A Curve C, 500V DC
  • RS Stock No. 772-1530
  • Mfr. Part No. A9N61531
Each
$199.47(exc. GST)
Temporarily out of stock
Schneider Electric Acti9 Busbar, 415V ac, 18mm Pitch
  • RS Stock No. 207-178
  • Mfr. Part No. A9XAH657
Each
$204.28(exc. GST)
In Stock
Hager BF RCCB, 63A, 3P Pole, 300mA, Type AC
  • RS Stock No. 602-190
  • Mfr. Part No. BF364
Each
$736.11(exc. GST)
Temporarily out of stock
Eaton 20A Cartridge Fuse, 23 x 57mm
  • RS Stock No. 228-988
  • Mfr. Part No. 20KR85
1 Pack of 20
$448.05(exc. GST)
In Stock
WAGO Electronic Circuit Breaker 10A 24V 787, 1 channels , DIN Rail
  • RS Stock No. 303-284
  • Mfr. Part No. 787-3861/100-000
Each
$83.08(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 1P 63A, Breaking Capacity 18 kA, Fixed Mount
  • RS Stock No. 346-751
  • Mfr. Part No. C10F1TM063
Each
$1,011.45(exc. GST)
Temporarily out of stock
Wickmann 200A Inline Fuse Holder, 32V dc
  • RS Stock No. 174-0208
  • Mfr. Part No. 04980921GXM5
Each (In a Box of 500)
$8.326(exc. GST)
Temporarily out of stock
Better World
Schneider Electric Straight Busbar Trunking, 3m, 40A, Canalis KBB Series
  • RS Stock No. 211-0385
  • Mfr. Part No. KBB40ED22305W
Each
$661.24(exc. GST)
In Stock
Schneider Electric Resi9 R9PF MCB, 3P, 10A, 400V AC, 3000 A Breaking Capacity
  • RS Stock No. 276-8966
  • Mfr. Part No. R9PFC710
Each
$198.57(exc. GST)
Limited stock
Wickmann PC Board Non Resettable Fuse, Radial 2A, 250V ac
  • RS Stock No. 377-2168
  • Mfr. Part No. 3821200041
Each (In a Pack of 10)
$3.301(exc. GST)
Temporarily out of stock
Schneider Electric Tap Off, KSB12 Series
  • RS Stock No. 207-299
  • Mfr. Part No. KSB125HD502
Each
$3,034.08(exc. GST)
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)
In Stock
Wickmann Inline Fuse Holder
  • RS Stock No. 174-0755
  • Mfr. Part No. 01500079Z
Each (In a Pack of 5)
$4.724(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)
Temporarily out of stock
Eaton 250A British Standard Fuse, B3, 415V ac, 111mm
  • RS Stock No. 139-984
  • Mfr. Part No. ED250
Each
$103.95(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)
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