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

282 of 999+
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 2kA 1SDA07, 4 channels
  • RS Stock No. 259-3750
  • Mfr. Part No. 1SDA071735R1
Each
$29,141.06(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 630A Ekip Touch LSIG, 4 channels
  • RS Stock No. 259-3422
  • Mfr. Part No. 1SDA071356R1
Each
$14,731.28(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB 4P 200A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 257-201
  • Mfr. Part No. 3VA5320-7EC41-0AA0
Each
$11,239.09(exc. GST)
Temporarily out of stock
Eaton BCZ-A Door for use with Distribution Boards
  • RS Stock No. 243-511
  • Mfr. Part No. 101578 BCZ-A-TWS-1/13
Each
$167.13(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 2.5kA 1SDA07, 4 channels
  • RS Stock No. 259-3738
  • Mfr. Part No. 1SDA071713R1
Each
$32,263.34(exc. GST)
Temporarily out of stock
Schneider Electric ComPacT New Generation Trip Unit for use with ComPacT NSX100
  • RS Stock No. 260-9385
  • Mfr. Part No. C104TM025
Each
$834.27(exc. GST)
Temporarily out of stock
RS PRO SMD Non-Resettable Surface Mount Fuse 25A, 63V
  • RS Stock No. 252-2163
Each (On a Tape of 4000)
$0.324(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 4kA 1SDA07, 4 / f channels
  • RS Stock No. 259-3931
  • Mfr. Part No. 1SDA071967R1
Each
$72,257.96(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 630A Ekip Dip LSI, 4 channels
  • RS Stock No. 259-3399
  • Mfr. Part No. 1SDA071333R1
Each
$12,358.96(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 800A Ekip Dip LSI, 4 channels
  • RS Stock No. 259-3553
  • Mfr. Part No. 1SDA071533R1
Each
$17,098.09(exc. GST)
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)
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