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

66 of 999+
Schurter 20A T Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 703-2663P
  • Mfr. Part No. 8020.0605.G
Each (Supplied in a Bag)
$1.947(exc. GST)
Better World
Schneider Electric Acti 9 C120N MCB, 3P, 125A Curve C, 440V AC, 375V DC, 10 kA, 20 kA Breaking Capacity
  • RS Stock No. 776-3076
  • Mfr. Part No. A9N18369
Each
$562.43(exc. GST)
ABB PS3 3 Phase Busbar, 400V ac, 17.5mm Pitch
  • RS Stock No. 489-7218
  • Mfr. Part No. 2CDL230001R1060 - PS3/60
Each
$156.56(exc. GST)
Siemens 630A Solid Link for LV HRC Fuses
  • RS Stock No. 395-711
  • Mfr. Part No. 3NG1402
Each
$166.95(exc. GST)
Eaton 3.15A T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 169-9417
  • Mfr. Part No. S506-3.15-R
1 Bag of 1000
$560.12(exc. GST)
Siemens 63A Bottle Fuse Holder, 500V ac
  • RS Stock No. 202-7135
  • Mfr. Part No. 5SH1231
Each (In a Pack of 5)
$15.68(exc. GST)
Eaton 25A DIN Rail Mount 6.3 x 32mm Fuse Block, 300V
  • RS Stock No. 233-0629
  • Mfr. Part No. BK-S-8301-1X-DIN
Each (In a Pack of 10)
$9.781(exc. GST)
Better World
Schneider Electric RCBO, 6A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type C, Acti 9 Range
  • RS Stock No. 790-9260
  • Mfr. Part No. A9D11806
Each
$98.86(exc. GST)
nVent ERIFLEX ERIFLEX Busbar, 25mm Pitch
  • RS Stock No. 277-6093
  • Mfr. Part No. 550210
Each (In a Pack of 4)
$147.225(exc. GST)
Schneider Electric 220 - 440V ac Earth Leakage Add-on Protection Module Circuit Trip for use with ComPact (ComPact
  • RS Stock No. 276-9255
  • Mfr. Part No. LV429489
Each
$5,078.70(exc. GST)
Eaton xComfort Distribution Board Enclosure, 12 Way
  • RS Stock No. 257-960
  • Mfr. Part No. 284642 BC-O-3/36-TW-ECO
Each
$360.26(exc. GST)
Littelfuse PCB Mount Fuse Holder for ATO Fuse, 80V dc
  • RS Stock No. 787-4353
  • Mfr. Part No. 178.6164.0001
Each
$7.33(exc. GST)
RS PRO 4A F Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 668-6041
Each (In a Pack of 10)
$0.84(exc. GST)
Schneider Electric, ComPacT New Generation Circuit breaker 3P 100A, Breaking Capacity 36 kA, Fixed Mount
  • RS Stock No. 254-6281
  • Mfr. Part No. C10F3
Each
$547.82(exc. GST)
Schneider Electric Acti 9 C120N MCB, 1P, 125A Curve C, 415V AC, 125V DC, 15 kA Breaking Capacity
  • RS Stock No. 230-6681
  • Mfr. Part No. A9N18359
Each
$122.15(exc. GST)
Resi9 Busbar, 230V ac, 18mm Pitch
  • RS Stock No. 585-434
  • Mfr. Part No. R9EXHS10
Each
$18.80(exc. GST)
C.BREAKER TMAX XT2 P Fp 3P Ef
  • RS Stock No. 192-0824
  • Mfr. Part No. 1SDA068187R1
Each
$555.76(exc. GST)
Schneider Electric Tee Elbow Busbar Trunking, 290mm, 630A, KSA Series
  • RS Stock No. 653-926
  • Mfr. Part No. KSA630DLE401
Each
$3,994.53(exc. GST)
Resi9 Busbar, 230V ac, 18mm Pitch
  • RS Stock No. 585-435
  • Mfr. Part No. R9EXVN15
1 Pack of 5
$124.11(exc. GST)
ABB PS1 1 Phase Busbar, 400V ac, 17.5mm Pitch
  • RS Stock No. 489-6568
  • Mfr. Part No. 2CDL210001R1060 - PS1/60
Each
$61.51(exc. GST)
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