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

68 of 999+
In Stock
Schneider Electric Acti9 A9F MCB, 3P, 40A Curve B, 400V AC, 180V DC, 15 kA Breaking Capacity
  • RS Stock No. 288-7091
  • Mfr. Part No. A9F93340
Each
$1,513.84(exc. GST)
In Stock
RS PRO 15A T Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 668-6095
Each (In a Pack of 10)
$2.013(exc. GST)
Temporarily out of stock
Residual Current Circuit Breaker
  • RS Stock No. 599-631
  • Mfr. Part No. 2CCL462110E0104
Each
$609.40(exc. GST)
In Stock
Mersen 100A British Standard Fuse, 17 x 49mm, 690V, 61 → 65.5mm
  • RS Stock No. 304-2726
  • Mfr. Part No. L220971
Each
$121.74(exc. GST)
Temporarily out of stock
Legrand Protective Cap
  • RS Stock No. 266-3049
  • Mfr. Part No. 0 016 91
1 Box of 5
$175.35(exc. GST)
In Stock
ETA Thermal Circuit Breaker - 106 Single Pole 240V Voltage Rating Panel Mount, 10A Current Rating
  • RS Stock No. 728-8654
  • Mfr. Part No. 106-P10-000040-10A
Each
$62.48(exc. GST)
Temporarily out of stock
30A Fuse Holder, 2P, 48V dc
  • RS Stock No. 262-941
  • Mfr. Part No. CHCC2DIU
1 Pack of 6
$291.93(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)
Temporarily out of stock
Schneider Electric, ComPacT New Generation MCCB 3P 20A, Breaking Capacity 25 kA, Fixed Mount
  • RS Stock No. 207-186
  • Mfr. Part No. BDL36020LU
Each
$1,982.39(exc. GST)
Temporarily out of stock
Schneider Electric RCBO, 6A Current Rating, 1P Poles, Type B, Acti9 Range
  • RS Stock No. 245-088
  • Mfr. Part No. A9D56806
Each
$408.12(exc. GST)
Currently unavailable
Finder 1 Phase Surge Arrester, 40kA
  • RS Stock No. 223-7777
  • Mfr. Part No. 7P.37.8.275.1003
Each
$62.06(exc. GST)
Temporarily out of stock
Schneider Electric Acti9 1 Phase Distribution Board, 12 Way, 125 A
  • RS Stock No. 207-257
  • Mfr. Part No. SE125A12
Each
$435.07(exc. GST)
In Stock
Better World
Schneider Electric Acti 9 IC60L MCB, 1P, 10A Curve K, 230V AC, 72V DC, 20 kA, 15 kA Breaking Capacity
  • RS Stock No. 212-0143
  • Mfr. Part No. A9F95110
Each
$78.12(exc. GST)
In Stock
Phoenix Contact Electronic Circuit Breaker 8A 24V PTCB, DIN Rail Mount
  • RS Stock No. 201-5438
  • Mfr. Part No. 2909910
Each
$73.88(exc. GST)
In Stock
ABB High Performance S800S MCB, 3P, 80A Curve D, 400V AC, 250V DC, 50 kA Breaking Capacity
  • RS Stock No. 435-493
  • Mfr. Part No. 2CCG001244R0001
Each
$576.50(exc. GST)
Limited stock
Phoenix Contact Thermal Circuit Breaker - TCP 0.5A Single Pole 65 V dc, 250V ac Voltage Rating, 500mA Current Rating
  • RS Stock No. 801-6898
  • Mfr. Part No. 0712152
Each
$35.46(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
Siemens SENTRON 1 Phase Busbar, 17.6mm Pitch
  • RS Stock No. 328-521
  • Mfr. Part No. 5ST3701-3HG
Each
$255.84(exc. GST)
Temporarily out of stock
Eaton 2A Cartridge Fuse, 1.5 x 0.41in
  • RS Stock No. 229-123
  • Mfr. Part No. FNQ-2
1 Pack of 10
$1,031.33(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)
Results per page
1
68
1746

Related links