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

33 of 999+
Better World
ABB System Pro M Compact S200 MCB, 3P, 50A Curve K, 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 746-8034
  • Mfr. Part No. 2CDS253001R0577 S203-K50
Each
$352.90(exc. GST)
RS PRO Earthing Kit
  • RS Stock No. 528-983
Each
$34.71(exc. GST)
Schneider Electric, ComPacT New Generation MCCB 3P 150A, Breaking Capacity 65 kA, DIN Rail Mount
  • RS Stock No. 245-055
  • Mfr. Part No. NHGF36150U31XTW
Each
$2,551.35(exc. GST)
RS PRO Fuse Holder DIN Rail Adapter
  • RS Stock No. 354-408
Each (In a Pack of 10)
$3.868(exc. GST)
Eaton 400A Centred Tag Fuse, NH1, 690V
  • RS Stock No. 182-1583
  • Mfr. Part No. 170M3819D
Each
$726.87(exc. GST)
Schurter 500mA T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 777-7491
  • Mfr. Part No. 0034.3114
Each (In a Pack of 10)
$1.026(exc. GST)
Eaton 32A British Standard Fuse, A4, 500V, 94mm
  • RS Stock No. 181-8708
  • Mfr. Part No. CEO32
Each
$40.11(exc. GST)
Better World
Schneider Electric 250V ac Push Button Push Button
  • RS Stock No. 790-9187
  • Mfr. Part No. A9E18038
Each
$148.31(exc. GST)
Eaton 20A Ceramic Cartridge Fuse, 14 x 51mm
  • RS Stock No. 181-8590
  • Mfr. Part No. C14M20
Each (In a Box of 10)
$4.994(exc. GST)
Mersen 4A Slow-Blow Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 247-2910
  • Mfr. Part No. T302789
1 Box of 10
$168.14(exc. GST)
Eaton 6A British Standard Fuse, A2, 660V ac, 73mm
  • RS Stock No. 415-121
  • Mfr. Part No. TIA6
Each (In a Pack of 5)
$23.544(exc. GST)
RS PRO PC Board Non Resettable Fuse, Radial 2A, 250V ac
  • RS Stock No. 767-5055
Each (In a Pack of 10)
$0.509(exc. GST)
ABB High Performance S800N MCB, 1P, 100A Curve B, 400V AC, 36 kA Breaking Capacity
  • RS Stock No. 435-352
  • Mfr. Part No. 2CCG001215R0001
Each
$259.39(exc. GST)
Littelfuse Automotive Fuse Kit
  • RS Stock No. 219-9562
  • Mfr. Part No. 00950011XXN
Each
$126.56(exc. GST)
Bourns Surface Mount Fuse 5A, 65V dc
  • RS Stock No. 245-9266
  • Mfr. Part No. SF-1206SA500M-2
Each (On a Tape of 10)
$1.505(exc. GST)
Mersen 1.6A FA Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 188-6625
  • Mfr. Part No. L084006
Each (In a Pack of 10)
$8.82(exc. GST)
RS PRO 10A T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 611-0024
Each (In a Pack of 10)
$1.176(exc. GST)
Schurter Thermal Circuit Breaker - T11 Single Pole 240V ac Voltage Rating, 16A Current Rating
  • RS Stock No. 284-5906
  • Mfr. Part No. 4400.0017
Each
$29.17(exc. GST)
Littelfuse 6.3A T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 541-3530
  • Mfr. Part No. 021906.3MXAP
Each (In a Pack of 10)
$1.506(exc. GST)
Mersen 1.25kA size 33 FF Square Body Fuse, aR, 700V
  • RS Stock No. 448-3257
  • Mfr. Part No. D300084
Each
$719.71(exc. GST)
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