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

35151 Products showing for Fuses & Circuit Breakers

283 of 999+
Temporarily out of stock
Better World
ABB Emax2 Electronic Circuit Breaker 1.25kA Ekip G Hi-Touch LSIG, 3 channels
  • RS Stock No. 259-3129
  • Mfr. Part No. 1SDA070980R1
Each
$23,640.00(exc. GST)
Temporarily out of stock
Better World
ABB Emax2 Electronic Circuit Breaker 1.25kA Ekip Hi-Touch LSI, 3 channels
  • RS Stock No. 259-3115
  • Mfr. Part No. 1SDA070968R1
Each
$20,220.35(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 1.25kA 1SDA07, 3 channels
  • RS Stock No. 259-4079
  • Mfr. Part No. 1SDA072172R1
Each
$7,729.14(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 1.25kA Ekip G Touch LSIG, 4 channels
  • RS Stock No. 259-3621
  • Mfr. Part No. 1SDA071597R1
Each
$24,123.18(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 3.2kA 1SDA07, 4 channels
  • RS Stock No. 259-3787
  • Mfr. Part No. 1SDA071792R1
Each
$39,734.44(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 800A Ekip G Touch LSIG, 4 channels
  • RS Stock No. 259-3558
  • Mfr. Part No. 1SDA071537R1
Each
$23,417.02(exc. GST)
Temporarily out of stock
Schneider Electric ComPacT New Generation Trip Unit for use with ComPacT NSX 100/160/250 Circuit Breakers
  • RS Stock No. 260-9347
  • Mfr. Part No. C1036M080
Each
$4,934.56(exc. GST)
Temporarily out of stock
Better World
ABB Emax2 Electronic Circuit Breaker 3.2kA 1SDA07, 3 channels
  • RS Stock No. 259-3254
  • Mfr. Part No. 1SDA071152R1
Each
$29,475.64(exc. GST)
Temporarily out of stock
Better World
ABB Emax2 Electronic Circuit Breaker 1kA Ekip G Hi-Touch LSIG, 3 channels
  • RS Stock No. 259-3086
  • Mfr. Part No. 1SDA070940R1
Each
$22,041.65(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 800A Ekip Dip LSI, 4 channels
  • RS Stock No. 259-3429
  • Mfr. Part No. 1SDA071372R1
Each
$11,976.34(exc. GST)
Temporarily out of stock
Better World
ABB Emax2 Electronic Circuit Breaker 800A 1SDA07, 3 channels
  • RS Stock No. 259-3052
  • Mfr. Part No. 1SDA070907R1
Each
$20,220.35(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 2kA 1SDA07, 3 channels
  • RS Stock No. 259-4246
  • Mfr. Part No. 1SDA072371R1
Each
$15,685.67(exc. GST)
Temporarily out of stock
Better World
ABB Emax2 Electronic Circuit Breaker 1.25kA Ekip Touch LSI, 3 channels
  • RS Stock No. 259-3112
  • Mfr. Part No. 1SDA070965R1
Each
$13,455.45(exc. GST)
Temporarily out of stock
Better World
ABB Emax2 Electronic Circuit Breaker 800A Ekip G Touch LSIG, 3 channels
  • RS Stock No. 259-3041
  • Mfr. Part No. 1SDA070897R1
Each
$19,253.98(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 2.5kA 1SDA07, 4 channels
  • RS Stock No. 259-3761
  • Mfr. Part No. 1SDA071756R1
Each
$38,991.03(exc. GST)
Temporarily out of stock
Neozed Sicherungssockel D02, 1P, 63A, 40
  • RS Stock No. 537-822
  • Mfr. Part No. R9J02163
Each
$29.39(exc. GST)
Temporarily out of stock
Schneider Electric ComPacT New Generation Trip Unit for use with ComPacT NSX630 Circuit Breakers
  • RS Stock No. 260-8185
  • Mfr. Part No. C6337E570
Each
$15,154.24(exc. GST)
Temporarily out of stock
Phoenix Contact Surge Protector, 2.5kA, 150V ac/dc, DIN Rail Mount
  • RS Stock No. 497-863
  • Mfr. Part No. 1109673
Each
$53.15(exc. GST)
Temporarily out of stock
Schneider Electric Interlock for use with Compact NS630b → 1600 Circuit Breaker
  • RS Stock No. 247-1875
  • Mfr. Part No. 33914
Each
$3,686.93(exc. GST)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 25A, Breaking Capacity 7.5 kA, Plug In
  • RS Stock No. 231-319
  • Mfr. Part No. 112777 NZMN1-A25-SVE
Each
$1,179.62(exc. GST)
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