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

25 of 999+
Better World
ABB System Pro M Compact S200 MCB, 1P, 3A Curve D, 230V AC, 72V DC, 10 kA Breaking Capacity
  • RS Stock No. 746-7823
  • Mfr. Part No. 2CDS251001R0031 S201-D3
Each
$51.02(exc. GST)
ABB, Pro M MCCB 3P 125A, Breaking Capacity 6 kA, DIN Rail Mount
  • RS Stock No. 538-3849
  • Mfr. Part No. 2CDE283001R0125 E203/125R
Each
$154.20(exc. GST)
RS PRO 2A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 563-431
Each (In a Pack of 10)
$0.902(exc. GST)
Better World
Schneider Electric TeSys Thermal Circuit Breaker - TeSyS GV 3 Pole 690V ac Voltage Rating, 115A Current Rating
  • RS Stock No. 175-1498
  • Mfr. Part No. GV4P115N
Each
$1,450.63(exc. GST)
Eaton 100A British Standard Fuse, A3, 500V ac, 73.5mm
  • RS Stock No. 418-984
  • Mfr. Part No. OSD100
Each
$43.90(exc. GST)
Eaton 800mA T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 537-1464
  • Mfr. Part No. S506-800-R
Each (In a Pack of 10)
$0.462(exc. GST)
RS PRO Earthing Strap Metal 12 → 32mm Diameter
  • RS Stock No. 390-2448
Each (In a Pack of 10)
$4.78(exc. GST)
Eaton 450A Centred Tag Fuse, NH2, 690V
  • RS Stock No. 182-1733
  • Mfr. Part No. 170M5809D
Each
$1,257.75(exc. GST)
Siemens 20A Cartridge Fuse, 10 x 38mm
  • RS Stock No. 232-2006
  • Mfr. Part No. 3NC1020-0MK
Each (In a Pack of 20)
$30.745(exc. GST)
Wurth Elektronik 10A Panel Mount Fuse Holder for 5 x 20mm Fuse, 1P, 250V ac
  • RS Stock No. 893-0619
  • Mfr. Part No. 696315001002
Each (In a Pack of 5)
$4.228(exc. GST)
RS PRO 5A Tan Blade Car Fuse, 32V dc
  • RS Stock No. 563-536
Each (In a Pack of 10)
$2.039(exc. GST)
Eaton 5A F Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 412-302
  • Mfr. Part No. TDC10-5A
Each (In a Pack of 10)
$1.803(exc. GST)
Eaton 125A Bolted Tag Fuse, LET, 150 V dc, 240V ac, 41mm
  • RS Stock No. 182-1407
  • Mfr. Part No. 125LET
Each (In a Box of 10)
$37.192(exc. GST)
Eaton 125mA T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 537-1672
  • Mfr. Part No. S506-125-R
Each (In a Pack of 10)
$1.272(exc. GST)
ETA Thermal Circuit Breaker - 1658 Single Pole 250V Voltage Rating Panel Mount, 16A Current Rating
  • RS Stock No. 344-5333
  • Mfr. Part No. 1658-G21-02-P10-16A
Each
$12.32(exc. GST)
ABB RCBO, 16A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type C
  • RS Stock No. 183-3701
  • Mfr. Part No. 2CSR245041R1164
Each
$326.29(exc. GST)
RS PRO 6.3A T Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 247-4059
Each (In a Pack of 10)
$2.606(exc. GST)
RS PRO 250mA T Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 668-6060
Each (In a Pack of 10)
$1.84(exc. GST)
Eaton 20A T Melamine Cartridge Fuse, 10 x 38mm
  • RS Stock No. 854-8901
  • Mfr. Part No. FNQ-R-20
Each
$125.87(exc. GST)
Better World
Schneider Electric RCBO, 10A Current Rating, 2P Poles, 30mA Trip Sensitivity, Type C, Acti 9 Range
  • RS Stock No. 790-9244
  • Mfr. Part No. A9D19210
Each
$697.25(exc. GST)
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