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

280 of 999+
In Stock
Siemens 25A Cartridge Fuse, 14 x 51mm
  • RS Stock No. 232-2050
  • Mfr. Part No. 3NW6110-1
Each (In a Pack of 10)
$11.772(exc. GST)
Temporarily out of stock
ABB 20A Tag Fuse, 125 x 30 x 60mm, 500V
  • RS Stock No. 251-3443
  • Mfr. Part No. 1SCA022627R2100
1 Box of 3
$81.69(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 1.6kA 1SDA07, 4 channels
  • RS Stock No. 259-3539
  • Mfr. Part No. 1SDA071518R1
Each
$22,651.73(exc. GST)
In Stock
Wickmann 3.15A F Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 174-0655
  • Mfr. Part No. 02163.15HXP
Each (In a Pack of 5)
$2.414(exc. GST)
Temporarily out of stock
Better World
Siemens, 0AA0 MCCB 4P 63A, Breaking Capacity 36 kA, Fixed Mount
  • RS Stock No. 211-6024
  • Mfr. Part No. 3VA1163-4EE42-0AA0
Each
$1,023.14(exc. GST)
In Stock
Electro PJP AdaBV140 Adapter for use with Screw Terminal Block
  • RS Stock No. 275-3342
  • Mfr. Part No. AdaBV140-R
Each
$11.30(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 800A Ekip G Hi-Touch LSIG, 4 channels
  • RS Stock No. 259-3448
  • Mfr. Part No. 1SDA071390R1
Each
$21,312.49(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 1.6kA 1SDA07, 4 channels
  • RS Stock No. 259-3656
  • Mfr. Part No. 1SDA071630R1
Each
$25,535.59(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 6.3A, Fixed Mount
  • RS Stock No. 260-9424
  • Mfr. Part No. C10F3MA007
Each
$1,389.91(exc. GST)
Temporarily out of stock
Better World
Schneider Electric TeSys GV4L MCB, 3P, 2A, 690V AC, 50 kA Breaking Capacity
  • RS Stock No. 175-1424
  • Mfr. Part No. GV4L02N
Each
$1,187.95(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 1.6kA Ekip G Hi-Touch LSIG, 4 channels
  • RS Stock No. 259-3646
  • Mfr. Part No. 1SDA071620R1
Each
$24,271.90(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 1.6kA 1SDA07, 4 channels
  • RS Stock No. 259-3674
  • Mfr. Part No. 1SDA071648R1
Each
$25,944.53(exc. GST)
In Stock
Schneider Electric Cover for use with INS100, INS160
  • RS Stock No. 280-8418
  • Mfr. Part No. 28958
Each
$26.80(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 2kA 1SDA07, 4 channels
  • RS Stock No. 259-3752
  • Mfr. Part No. 1SDA071737R1
Each
$38,507.84(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 1.25kA Ekip Hi-Touch LSI, 4 channels
  • RS Stock No. 259-3512
  • Mfr. Part No. 1SDA071478R1
Each
$22,039.53(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 1.25kA Ekip Dip LSI, 4 channels
  • RS Stock No. 259-3488
  • Mfr. Part No. 1SDA071453R1
Each
$14,348.65(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 2kA 1SDA07, 4 channels
  • RS Stock No. 259-3692
  • Mfr. Part No. 1SDA071667R1
Each
$28,397.71(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 50A, Fixed Mount
  • RS Stock No. 260-9466
  • Mfr. Part No. C10H3TM050
Each
$1,868.72(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 2kA 1SDA07, 4 channels
  • RS Stock No. 259-3753
  • Mfr. Part No. 1SDA071738R1
Each
$37,727.35(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 1kA 1SDA07, 4 channels
  • RS Stock No. 259-3477
  • Mfr. Part No. 1SDA071432R1
Each
$14,386.88(exc. GST)
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