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

34925 Products showing for Fuses & Circuit Breakers

34 of 999+
Limited stock
ETA Thermal Circuit Breaker - 2-5700 Single Pole 250V Voltage Rating Panel Mount, 15A Current Rating
  • RS Stock No. 405-9157
  • Mfr. Part No. 2-5700-IG1-P10-DD-000040-15A
Each
$50.44(exc. GST)
In Stock
RS PRO RC Suppressor Circuit for use with Contactors
  • RS Stock No. 277-8524
Each
$38.14(exc. GST)
In Stock
Schneider Electric Acti9 SE10 MCB Mini Circuit Breaker, 1P, 20A Curve C, 415V AC, 10000 A Breaking Capacity
  • RS Stock No. 336-608
  • Mfr. Part No. SE10C120
Each
$57.48(exc. GST)
Temporarily out of stock
Schneider Electric 250V ac Shunt Trip Circuit Trip for use with DIN rail mounting support
  • RS Stock No. 219-9232
  • Mfr. Part No. A9E18071
Each
$198.95(exc. GST)
In Stock
Littelfuse 16A F Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 769-0039
  • Mfr. Part No. 0216016.TXP
Each (In a Pack of 10)
$3.136(exc. GST)
In Stock
ETA Thermal Circuit Breaker - 1170 Single Pole 28V dc Voltage Rating, 15A Current Rating
  • RS Stock No. 854-469
  • Mfr. Part No. 1170-21-15A
Each
$51.65(exc. GST)
In Stock
Mersen 1A Ceramic Cartridge Fuse, 8 x 32mm
  • RS Stock No. 304-1026
  • Mfr. Part No. C218709
Each (In a Pack of 10)
$3.688(exc. GST)
In Stock
Eaton 16A Bottle Fuse, 500V
  • RS Stock No. 228-624
  • Mfr. Part No. 16D27R FUSE D2 16A 500 VAC F GR E27
1 Pack of 5
$59.66(exc. GST)
In Stock
Littelfuse 630mA F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 541-4353
  • Mfr. Part No. 0217.630MXP
Each (In a Pack of 10)
$0.652(exc. GST)
Limited stock
Eaton 16A Panel Mount Fuse Holder for 5 x 20mm Fuse, 1P, 250V ac
  • RS Stock No. 849-5661
  • Mfr. Part No. HTB-24M-R
Each
$29.41(exc. GST)
In Stock
RS PRO 6.3A F Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 247-3977
Each (In a Pack of 10)
$2.891(exc. GST)
In Stock
Eaton 20A Ceramic Cartridge Fuse, 14 x 51mm
  • RS Stock No. 181-8888
  • Mfr. Part No. C14M20
Each
$5.03(exc. GST)
In Stock
Eaton 160A British Standard Fuse, FEE, 500 V dc, 690V ac, 70mm
  • RS Stock No. 156-9049
  • Mfr. Part No. 160FEE
Each
$100.95(exc. GST)
In Stock
Siemens 40A NH Fuse, NH000, 500V ac
  • RS Stock No. 395-800
  • Mfr. Part No. 3NA3817
Each (In a Pack of 3)
$16.84(exc. GST)
In Stock
Eaton 2A Bottle Fuse, 500V
  • RS Stock No. 258-963
  • Mfr. Part No. 2D27R FUSE-D2 2A F GR 500VAC E27
1 Pack of 5
$58.65(exc. GST)
In Stock
Better World
Schneider Electric with Fuse Isolator, Canalis Series
  • RS Stock No. 436-834
  • Mfr. Part No. KNB16CF2
Each
$131.88(exc. GST)
In Stock
Better World
ABB System Pro M Compact S200 MCB, 3P, 6A Curve D, 440V AC, 110V DC, 6 kA Breaking Capacity
  • RS Stock No. 527-9576
  • Mfr. Part No. 2CDS253001R0061 S203-D6
Each
$179.06(exc. GST)
Temporarily out of stock
Better World
ABB Emax2 Electronic Circuit Breaker 800A 1SDA07, 3 channels
  • RS Stock No. 259-3040
  • Mfr. Part No. 1SDA070896R1
Each
$12,823.58(exc. GST)
In Stock
Better World
ABB System Pro M Compact S200 MCB, 2P, 20A Curve C, 400V AC, 125V DC, 6 kA Breaking Capacity
  • RS Stock No. 746-7725
  • Mfr. Part No. 2CDS252001R0204 S202-C20
Each
$121.47(exc. GST)
Temporarily out of stock
Clipsal Electrical RCBO, 20A Current Rating, 3P Poles, 30mA Trip Sensitivity, Type A, MAX9 Range
  • RS Stock No. 282-2994
  • Mfr. Part No. MX9R3520
Each
$225.37(exc. GST)
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