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

284 of 999+
Temporarily out of stock
RS PRO SMD Non-Resettable Surface Mount Fuse 20A, 63V
  • RS Stock No. 252-2162
Each (In a Pack of 50)
$0.528(exc. GST)
Temporarily out of stock
Schneider Electric ComPacT New Generation Trip Unit for use with ComPacT NSX 100 Circuit Breakers
  • RS Stock No. 260-9379
  • Mfr. Part No. C104MG016
Each
$533.67(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 2.5kA Ekip Hi-Touch LSI, 3 channels
  • RS Stock No. 259-4302
  • Mfr. Part No. 1SDA072438R1
Each
$34,233.35(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 1.6kA 1SDA07, 3 channels
  • RS Stock No. 259-4219
  • Mfr. Part No. 1SDA072340R1
Each
$21,558.49(exc. GST)
Temporarily out of stock
Better World
ABB Emax2 Electronic Circuit Breaker 1.25kA Ekip Dip LI, 3 channels
  • RS Stock No. 259-3119
  • Mfr. Part No. 1SDA070971R1
Each
$13,195.33(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 1.25kA, Breaking Capacity 50 kA, Fixed Mount
  • RS Stock No. 654-998
  • Mfr. Part No. C125N450FM
Each
$14,897.95(exc. GST)
Temporarily out of stock
Better World
ABB Emax2 Electronic Circuit Breaker 2kA Ekip Touch LI, 3 channels
  • RS Stock No. 259-3189
  • Mfr. Part No. 1SDA071054R1
Each
$18,919.41(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 630A 1SDA07, 3 channels
  • RS Stock No. 259-4009
  • Mfr. Part No. 1SDA072068R1
Each
$12,856.35(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 250A 1SDA07, 3 channels
  • RS Stock No. 259-3987
  • Mfr. Part No. 1SDA072048R1
Each
$18,021.93(exc. GST)
Temporarily out of stock
Better World
ABB Emax2 Electronic Circuit Breaker 800A Ekip Dip LI, 3 channels
  • RS Stock No. 259-3036
  • Mfr. Part No. 1SDA070891R1
Each
$10,519.06(exc. GST)
Temporarily out of stock
Better World
ABB Emax2 Electronic Circuit Breaker 800A Ekip Touch LSIG, 3 channels
  • RS Stock No. 259-3051
  • Mfr. Part No. 1SDA070906R1
Each
$14,087.40(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 1.25kA Ekip Hi-Touch LSI, 3 channels
  • RS Stock No. 259-4094
  • Mfr. Part No. 1SDA072188R1
Each
$14,731.28(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 5kA 1SDA07, 4 / f channels
  • RS Stock No. 259-3949
  • Mfr. Part No. 1SDA071993R1
Each
$99,652.16(exc. GST)
Temporarily out of stock
Better World
ABB Emax2 Electronic Circuit Breaker 1.6kA Ekip G Hi-Touch LSIG, 3 channels
  • RS Stock No. 259-3028
  • Mfr. Part No. 1SDA070880R1
Each
$20,011.56(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 100A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 209-5089
  • Mfr. Part No. 3VA2010-5KP42-0AA0
Each
$3,003.46(exc. GST)
Temporarily out of stock
Better World
ABB Emax2 Electronic Circuit Breaker 2kA 1SDA07, 3 channels
  • RS Stock No. 259-3231
  • Mfr. Part No. 1SDA071109R1
Each
$33,675.80(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 2kA Ekip Dip LSI, 3 channels
  • RS Stock No. 259-4249
  • Mfr. Part No. 1SDA072373R1
Each
$17,692.80(exc. GST)
Temporarily out of stock
Schneider Electric, Powerpact Circuit breaker 4P 20A, Breaking Capacity 65 kA, Clip-On
  • RS Stock No. 444-276
  • Mfr. Part No. BJL46020LU
Each
$3,443.19(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 2kA Ekip Dip LSI, 3 channels
  • RS Stock No. 259-4307
  • Mfr. Part No. 1SDA072452R1
Each
$24,420.56(exc. GST)
Temporarily out of stock
Better World
ABB Emax2 Electronic Circuit Breaker 1.6kA Ekip G Touch LSIG, 3 channels
  • RS Stock No. 259-3160
  • Mfr. Part No. 1SDA071017R1
Each
$22,524.88(exc. GST)
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