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

39 of 999+
Limited stock
RS PRO 500mA T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 563-633
Each (In a Pack of 10)
$0.893(exc. GST)
Temporarily out of stock
Eaton 25A Bolted Tag Fuse, F2, 550V ac
  • RS Stock No. 181-8514
  • Mfr. Part No. ESD25
1 Box of 20
$364.76(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 63A, Fixed Mount
  • RS Stock No. 260-9434
  • Mfr. Part No. C10F3TM063
Each
$1,376.10(exc. GST)
Temporarily out of stock
Siemens ALPHA Busbar
  • RS Stock No. 203-3251
  • Mfr. Part No. 8GK9710-0KK00
Each
$125.46(exc. GST)
Limited stock
Murrelektronik Limited Electronic Circuit Breaker
  • RS Stock No. 123-6691
  • Mfr. Part No. 9000-41034-0401005
Each
$681.38(exc. GST)
In Stock
Littelfuse 2A T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 738-2797
  • Mfr. Part No. 0218002.MXP
Each (In a Pack of 10)
$1.506(exc. GST)
In Stock
RS PRO 32A Solid Link for Pullcap Fuses
  • RS Stock No. 242-1140
Each (In a Pack of 5)
$11.792(exc. GST)
In Stock
RS PRO 2A F Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 413-204
Each (In a Pack of 10)
$2.891(exc. GST)
In Stock
RS PRO PC Board Non Resettable Fuse, Radial 1A, 250V
  • RS Stock No. 767-5140
Each (In a Pack of 10)
$0.462(exc. GST)
In Stock
Eaton 63A DIII Bottle Fuse, gR, 500V
  • RS Stock No. 228-893
  • Mfr. Part No. 63D33R FUSE-D2 63A F GR 500VAC E33
1 Pack of 5
$142.71(exc. GST)
Temporarily out of stock
Siemens 30A F Cartridge Fuse, 10 x 38mm
  • RS Stock No. 232-2031
  • Mfr. Part No. 3NW2300-0HG
Each (In a Pack of 10)
$48.271(exc. GST)
Temporarily out of stock
Clipsal Electrical RCBO, 32A Current Rating, 3P Poles, 30mA Trip Sensitivity, Type A, MAX9 Range
  • RS Stock No. 282-2996
  • Mfr. Part No. MX9R3532
Each
$213.63(exc. GST)
Temporarily out of stock
Eaton 2.5A T Melamine Cartridge Fuse, 1.5 x 0.41in
  • RS Stock No. 261-900
  • Mfr. Part No. FNQ-R-2-1/2
1 Pack of 10
$1,253.37(exc. GST)
In Stock
RS PRO PC Board Non Resettable Fuse, Radial 2A, 250V
  • RS Stock No. 767-5128
Each (In a Pack of 10)
$1.019(exc. GST)
In Stock
RS PRO Single Phase Industrial Surge Protector, 50kA, 1.25kV, DIN Rail Mount
  • RS Stock No. 101-800
Each
$85.98(exc. GST)
Temporarily out of stock
20A Neutral Link x 5mm
  • RS Stock No. 252-909
  • Mfr. Part No. 20CML
1 Pack of 10
$104.20(exc. GST)
In Stock
Bourns SMD Non Resettable Fuse 15A, 250V ac
  • RS Stock No. 187-8675
  • Mfr. Part No. SF-3812F1500T-2
Each (In a Pack of 10)
$5.422(exc. GST)
Being discontinued
RS PRO PC Board Non Resettable Fuse, Axial 1.5A, 250V ac
  • RS Stock No. 764-9582
Each (In a Pack of 10)
$0.942(exc. GST)
In Stock
ETA Thermal Circuit Breaker - 3120-N 5 Pole 50 V DC, 240 V AC Voltage Rating, 20A Current Rating
  • RS Stock No. 210-2104
  • Mfr. Part No. 3120-N551-H7T1-W19DG4-20A
Each
$61.78(exc. GST)
In Stock
Schneider Electric 100V ac Shunt Trip Circuit Trip for use with IC60, IID, ISW-NA
  • RS Stock No. 734-9021
  • Mfr. Part No. A9A26946
Each
$191.24(exc. GST)
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