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

64 of 999+
Phoenix Contact Surge Protector, 40kA, 1000V dc
  • RS Stock No. 269-7885
  • Mfr. Part No. 1056071
Each
$977.57(exc. GST)
Phoenix Contact 16A Ceramic Cartridge Fuse, 10 x 85mm
  • RS Stock No. 771-0502
  • Mfr. Part No. 3062772
Each
$95.87(exc. GST)
Siemens 160A Rail Mount Fuse Holder for 00 Fuse, 1P, 690V ac
  • RS Stock No. 395-658
  • Mfr. Part No. 3NH3030
Each (In a Pack of 3)
$77.39(exc. GST)
Wickmann Fuse Block
  • RS Stock No. 174-0656
  • Mfr. Part No. 0PTF0078P
Each (In a Pack of 50)
$0.688(exc. GST)
Siemens Fuse Holder Adapter Sleeve
  • RS Stock No. 622-0935
  • Mfr. Part No. 5SH5010
Each (In a Pack of 10)
$1.572(exc. GST)
Mersen 32A Rail Mount Fuse Holder for 10 x 38mm Fuse, 1P+N, 690V ac
  • RS Stock No. 182-0347
  • Mfr. Part No. H215655
Each
$36.51(exc. GST)
Better World
Schneider Electric Acti 9 C60H-DC MCB, 1P, 50A Curve C, 250V DC, 20 kA Breaking Capacity
  • RS Stock No. 776-3196
  • Mfr. Part No. A9N61518
Each
$101.70(exc. GST)
Lasttrennschalter Resi9, 3P+N, 63A, 415V
  • RS Stock No. 537-825
  • Mfr. Part No. R9S64463
Each
$99.26(exc. GST)
Legrand 32A Slow-Blow Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 293-8250
  • Mfr. Part No. 0 133 32
Each (In a Pack of 10)
$7.394(exc. GST)
Mersen 25A Rail Mount Fuse Holder for 8 x 31mm Fuse, 1P, 400V ac
  • RS Stock No. 287-5806
  • Mfr. Part No. C200769
Each
$23.13(exc. GST)
Siemens 5A Cartridge Fuse
  • RS Stock No. 210-6987
  • Mfr. Part No. 3NW1050-0HG
Each (In a Pack of 10)
$52.429(exc. GST)
Better World
Schneider Electric PowerLogic Mounting Kit for use with Power meter
  • RS Stock No. 211-2699
  • Mfr. Part No. METSEPM53HK
Each
$118.18(exc. GST)
Littelfuse PCB Mount Fuse Holder for ATO Fuse, 80V dc
  • RS Stock No. 787-4353
  • Mfr. Part No. 178.6164.0001
Each
$7.33(exc. GST)
Eaton PKZ0 Circuit Breaker for use with PKZM0, PKZM4
  • RS Stock No. 272-7215
  • Mfr. Part No. 106137 PKZ0-XRH-MCC
Each
$192.93(exc. GST)
Eaton 6A gG/gL Cartridge Fuse, 14 x 51mm
  • RS Stock No. 229-111
  • Mfr. Part No. C14G6
1 Pack of 10
$45.29(exc. GST)
Better World
Schneider Electric MCCB 3P 16 → 160A
  • RS Stock No. 178-7875
  • Mfr. Part No. LV426912
Each
$37.57(exc. GST)
ETI 35A DIII Diazed Fuse, E33 Thread Size, gG - gL, 500V ac
  • RS Stock No. 413-743
  • Mfr. Part No. 2313401
Each (In a Pack of 5)
$5.892(exc. GST)
Better World
Siemens SENTRON 3VA9 Cover for use with 3VA1 100/160
  • RS Stock No. 218-1780
  • Mfr. Part No. 3VA9111-0WF30
Each
$110.39(exc. GST)
Wickmann 30A Inline Fuse Holder, 32V dc
  • RS Stock No. 174-0625
  • Mfr. Part No. 868-062-000
Each (In a Pack of 5)
$3.182(exc. GST)
Clipsal Electrical RCBO, 32A Current Rating, 3P+N Poles, 30mA Trip Sensitivity, Type A, Acti9 Range
  • RS Stock No. 281-5920
  • Mfr. Part No. A9DC1932
Each
$1,414.38(exc. GST)
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