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

287 of 999+
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 800A 1SDA07, 3 channels
  • RS Stock No. 259-4036
  • Mfr. Part No. 1SDA072107R1
Each
$14,233.84(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 1kA Ekip Touch LSIG, 3 channels
  • RS Stock No. 259-4160
  • Mfr. Part No. 1SDA072276R1
Each
$13,269.62(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 800A Ekip Dip LSI, 3 channels
  • RS Stock No. 259-4041
  • Mfr. Part No. 1SDA072113R1
Each
$12,588.52(exc. GST)
Temporarily out of stock
Schneider Electric ComPacT New Generation Trip Unit for use with ComPacT NSX 160/250 Circuit Breakers
  • RS Stock No. 260-7721
  • Mfr. Part No. C1642D160
Each
$3,915.98(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 6.3kA Ekip Touch LSIG, 3 channels
  • RS Stock No. 259-3371
  • Mfr. Part No. 1SDA071296R1
Each
$89,170.26(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 800A Ekip Hi-Touch LSI, 3 channels
  • RS Stock No. 259-4156
  • Mfr. Part No. 1SDA072269R1
Each
$21,632.78(exc. GST)
Temporarily out of stock
Bourns Thermal Fuse +85°C 40 A, 28V
  • RS Stock No. 258-6376
  • Mfr. Part No. LC85AY-1
Each (In a Bag of 5000)
$1.04(exc. GST)
Temporarily out of stock
Schneider Electric ComPacT New Generation Trip Unit for use with ComPacT NSX 160 DC
  • RS Stock No. 260-7730
  • Mfr. Part No. C164TM160D
Each
$1,368.95(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 4kA Ekip Dip LSI, 3 channels
  • RS Stock No. 259-3315
  • Mfr. Part No. 1SDA071223R1
Each
$54,602.39(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 4kA Ekip Dip LI, 3 channels
  • RS Stock No. 259-3335
  • Mfr. Part No. 1SDA071241R1
Each
$53,020.84(exc. GST)
Temporarily out of stock
Better World
ABB Emax2 Electronic Circuit Breaker 1.25kA Ekip Touch LI, 3 channels
  • RS Stock No. 259-3102
  • Mfr. Part No. 1SDA070954R1
Each
$11,262.43(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 800A Ekip G Hi-Touch LSIG, 3 channels
  • RS Stock No. 259-4137
  • Mfr. Part No. 1SDA072250R1
Each
$20,666.39(exc. GST)
Temporarily out of stock
Siemens ALPHA Distribution Board
  • RS Stock No. 629-322
  • Mfr. Part No. 8GK1383-2KK25
Each
$1,601.22(exc. GST)
Temporarily out of stock
Schneider Electric ComPacT New Generation Trip Unit for use with ComPacT NSX250 Circuit Breakers
  • RS Stock No. 260-7845
  • Mfr. Part No. C2545E250
Each
$7,471.75(exc. GST)
Temporarily out of stock
ABB Fuse Holder 4 Pole Assembly Pin
  • RS Stock No. 258-9635
  • Mfr. Part No. 1SCA022735R9260
Each
$341.84(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 1.25kA Ekip Dip LSI, 3 channels
  • RS Stock No. 259-4089
  • Mfr. Part No. 1SDA072182R1
Each
$7,996.96(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 250A 1SDA07, 4 channels
  • RS Stock No. 259-3395
  • Mfr. Part No. 1SDA071329R1
Each
$22,383.86(exc. GST)
Temporarily out of stock
ABB 63A Tag Fuse, 125 x 30 x 60mm, 500V
  • RS Stock No. 251-3448
  • Mfr. Part No. 1SCA022627R2790
1 Box of 3
$81.69(exc. GST)
Temporarily out of stock
Better World
ABB Emax2 Electronic Circuit Breaker 3.2kA Ekip Hi-Touch LSI, 3 channels
  • RS Stock No. 259-3250
  • Mfr. Part No. 1SDA071148R1
Each
$32,449.23(exc. GST)
Temporarily out of stock
Schneider Electric ComPacT New Generation Trip Unit for use with ComPacT NSX 250 Circuit Breakers
  • RS Stock No. 260-7829
  • Mfr. Part No. C2534V250
Each
$8,720.88(exc. GST)
1
287
1758
Results per page

Related links