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

34933 Products showing for Fuses & Circuit Breakers

6 of 999+
Legrand 4A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 180-6115
  • Mfr. Part No. 0 133 04
Each (In a Box of 10)
$5.57(exc. GST)
ABB Terminal bar
  • RS Stock No. 289-1637
  • Mfr. Part No. M125020000
Each
$5.13(exc. GST)
Bourns 0.5A Resettable Fuse, 13.2V
  • RS Stock No. 647-8320P
  • Mfr. Part No. MF-NSMF050-2
Each (Supplied on a Reel)
$0.529(exc. GST)
SIBA 500mA FF Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 736-1416
  • Mfr. Part No. 70-172-40/0.5A
Each
$13.56(exc. GST)
Littelfuse PC Board Non Resettable Fuse, Axial 3A, 125V ac/dc
  • RS Stock No. 541-3293
  • Mfr. Part No. 0251003.NRT1L
Each (In a Pack of 10)
$1.554(exc. GST)
Europa Blanking Plate
  • RS Stock No. 201-7936
  • Mfr. Part No. ECUBP
1 Pair
$7.91(exc. GST)
Better World
Schneider Electric TeSys GV5P MCB, 3P, 150A, 690V AC, 70 kA Breaking Capacity
  • RS Stock No. 188-4750
  • Mfr. Part No. GV5P150H
Each
$1,424.21(exc. GST)
Legrand 10A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 180-6118
  • Mfr. Part No. 0 133 10
Each (In a Box of 10)
$6.166(exc. GST)
Socomec 25A F Cartridge Fuse, 10 x 38mm
  • RS Stock No. 223-2796
  • Mfr. Part No. 60130025
Each (In a Pack of 10)
$2.829(exc. GST)
Littelfuse 2A Grey Blade Car Fuse, 32V dc
  • RS Stock No. 787-4126
  • Mfr. Part No. 0287002.PXCN
Each (In a Pack of 10)
$0.652(exc. GST)
Better World
Schneider Electric RCBO, 20A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type C, Acti 9 Range
  • RS Stock No. 790-9305
  • Mfr. Part No. A9D11820
Each
$275.59(exc. GST)
SIBA 10A F Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 783-3383
  • Mfr. Part No. 70-059-60/10A
Each (In a Pack of 10)
$0.17(exc. GST)
Legrand Circuit breaker TX3 6000 MCB, 1P, 16A Curve C, 230V AC
  • RS Stock No. 249-5879
  • Mfr. Part No. 4 034 34
Each
$9.19(exc. GST)
RS PRO 32A British Standard Fuse, F1, 550V ac
  • RS Stock No. 521-2955
Each (In a Pack of 5)
$15.392(exc. GST)
Better World
Siemens Sentron 5SY7 MCB, 1P, 32A Curve C, 230V AC, 15 kA Breaking Capacity
  • RS Stock No. 622-0301
  • Mfr. Part No. 5SY7132-7
Each
$65.54(exc. GST)
Clipsal Electrical MX9RC RCCB, 63A, 2 Pole, 30mA, Type A, 240V ac
  • RS Stock No. 282-3000
  • Mfr. Part No. MX9RC263
Each
$92.80(exc. GST)
Littelfuse 7.5A Brown Blade Car Fuse, 32V dc
  • RS Stock No. 787-4139P
  • Mfr. Part No. 028707.5PXCN
Each (Supplied in a Bag)
$0.558(exc. GST)
RS PRO 25A T Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 247-4037
Each (In a Pack of 10)
$3.278(exc. GST)
Eaton 30A Fuse Holder, 1P, 48V dc
  • RS Stock No. 263-145
  • Mfr. Part No. CHCC1DU
1 Pack of 12
$183.59(exc. GST)
RS PRO 1A F Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 177-8103
Each (In a Pack of 50)
$0.519(exc. GST)
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