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

95 of 999+
In Stock
Eaton 100A Ceramic Cartridge Fuse, 23 x 57mm
  • RS Stock No. 182-1625
  • Mfr. Part No. 100KR85
Each
$19.73(exc. GST)
In Stock
RS PRO 750mA T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 911-3385
Each (In a Pack of 10)
$0.574(exc. GST)
In Stock
Schneider Electric Acti9 1 Phase Distribution Board, 6 Way, 125 A
  • RS Stock No. 244-967
  • Mfr. Part No. SE125A6
Each
$288.82(exc. GST)
In Stock
Littelfuse 11A F Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 738-3197
  • Mfr. Part No. 0FLU011.T
Each
$97.25(exc. GST)
Temporarily out of stock
Siemens SENTRON 3, 3+N Phase Busbar, 400V
  • RS Stock No. 328-329
  • Mfr. Part No. 5ST3783-4
Each
$136.00(exc. GST)
In Stock
Murrelektronik Limited Mico Pro Circuit Breaker
  • RS Stock No. 285-5872
  • Mfr. Part No. 9000-41011-0400000
Each
$95.26(exc. GST)
Temporarily out of stock
Siemens SENTRON 5SY4 MCB, 2P, 2A Curve B, 400V AC, 60V DC, 35 kA Breaking Capacity
  • RS Stock No. 610-308
  • Mfr. Part No. 5SY4202-6
Each
$166.35(exc. GST)
Temporarily out of stock
Phoenix Contact Thermal Circuit Breaker - TCP 10A Single Pole 65 V dc, 250V ac Voltage Rating, 10A Current Rating
  • RS Stock No. 170-3790
  • Mfr. Part No. 0712314
Each (In a Box of 20)
$29.814(exc. GST)
In Stock
Siemens SIRIUS 3 Phase Busbar
  • RS Stock No. 755-2955
  • Mfr. Part No. 3RV2917-4A
Each
$25.38(exc. GST)
In Stock
Eaton 63A British Standard Fuse, A3, 550V ac, 73.5mm
  • RS Stock No. 413-383
  • Mfr. Part No. BAO63
Each
$22.19(exc. GST)
In Stock
RS PRO 15A Slow-Blow Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 188-4650
Each
$43.51(exc. GST)
Temporarily out of stock
Eaton Busbar Support, xEnergy Main LV switchgear Series
  • RS Stock No. 125-955
  • Mfr. Part No. 174086 XTPZBEZ1
Each
$113.93(exc. GST)
In Stock
Better World
ABB System Pro M Compact S200 MCB, 2P, 16A Curve C, 400V AC, 6 kA Breaking Capacity
  • RS Stock No. 746-7716
  • Mfr. Part No. 2CDS252001R0164 S202-C16
Each
$199.06(exc. GST)
Temporarily out of stock
Better World
Schneider Electric Acti 9 C120N MCB, 2P, 125A Curve C, 440V AC, 250V DC, 10 kA, 20 kA Breaking Capacity
  • RS Stock No. 776-3067
  • Mfr. Part No. A9N18363
Each
$324.58(exc. GST)
Temporarily out of stock
Siemens SENTRON 1 Phase Busbar, 17.6mm Pitch
  • RS Stock No. 328-521
  • Mfr. Part No. 5ST3701-3HG
Each
$255.84(exc. GST)
In Stock
Schneider Electric Acti9 Active iDT40 AFDD, 25A, 1+N Pole
  • RS Stock No. 238-3485
  • Mfr. Part No. A9TYAE625
Each
$1,807.53(exc. GST)
Temporarily out of stock
Eaton 32A NH Fuse, NH000, 690V ac
  • RS Stock No. 181-8540
  • Mfr. Part No. 32NHG000B-690
1 Box of 3
$31.25(exc. GST)
In Stock
Eaton 100A Cartridge Fuse, 1 x 2.66in
  • RS Stock No. 228-802
  • Mfr. Part No. TPL-BD
1 Pack of 5
$1,157.27(exc. GST)
Temporarily out of stock
ABB System Pro M Compact S200 MCB, 4P, 40A Curve B, 440V AC, 125V DC, 6 kA Breaking Capacity
  • RS Stock No. 488-6202
  • Mfr. Part No. 2CDS254001R0405 - S204B40
Each
$531.25(exc. GST)
Currently unavailable
L-Com Surge Protector, DIN Rail Mount
  • RS Stock No. 297-413
  • Mfr. Part No. ELPD-CAT6
Each
$218.78(exc. GST)
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