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

286 of 999+
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 80A, Breaking Capacity 25 kA, DIN Rail Mount
  • RS Stock No. 271-9416
  • Mfr. Part No. 3VA1180-3GF46-0AA0
Each
$1,231.43(exc. GST)
In Stock
Bourns Surface Mount Fuse 1A, 65V dc
  • RS Stock No. 245-9242P
  • Mfr. Part No. SF-1206SA100M-2
Each (Supplied on a Reel)
$1.406(exc. GST)
Temporarily out of stock
Phoenix Contact 15A Blue Automotive Car Fuse, 32V No
  • RS Stock No. 253-7600
  • Mfr. Part No. 2908360
Each (In a Pack of 2)
$27.40(exc. GST)
Temporarily out of stock
Schneider Electric ComPacT New Generation Trip Unit for use with ComPacT NSX250 Circuit Breakers
  • RS Stock No. 260-7835
  • Mfr. Part No. C253MA220
Each
$1,348.05(exc. GST)
Temporarily out of stock
Eaton Eaton Moeller xPole 4 Phase Busbar, 690V, 17.8mm Pitch
  • RS Stock No. 251-437
  • Mfr. Part No. 193378 EVG-2PHAS/4AFDD
Each
$29.65(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 5kA 1SDA07, 4 / f channels
  • RS Stock No. 259-3955
  • Mfr. Part No. 1SDA071999R1
Each
$107,569.31(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 1kA 1SDA07, 3 channels
  • RS Stock No. 259-4158
  • Mfr. Part No. 1SDA072271R1
Each
$10,965.09(exc. GST)
In Stock
Eaton 32A British Standard Fuse, A2, 660V ac, 73mm
  • RS Stock No. 415-193
  • Mfr. Part No. TIA32M40
Each (In a Pack of 5)
$33.66(exc. GST)
Temporarily out of stock
Schneider Electric ComPacT Control Unit for use with Compact NS630b to NS1600
  • RS Stock No. 341-518
  • Mfr. Part No. C5PFM
Each
$13,486.92(exc. GST)
In Stock
Wickmann Non-Resettable Wire Ended Fuse 1A, 250V ac
  • RS Stock No. 174-0252
  • Mfr. Part No. 0875001.MXEP
1 Box of 1000
$1,849.65(exc. GST)
In Stock
Legrand 1A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 180-6106
  • Mfr. Part No. 0 130 01
Each (In a Box of 10)
$5.955(exc. GST)
Temporarily out of stock
ABB 100A Tag Fuse, 125 x 30 x 60mm, 500V
  • RS Stock No. 251-3450
  • Mfr. Part No. 1SCA022627R2950
1 Box of 3
$81.69(exc. GST)
Temporarily out of stock
Schneider Electric ComPacT New Generation Trip Unit for use with ComPacT NSX160/250 Circuit Breakers
  • RS Stock No. 260-7727
  • Mfr. Part No. C1647E160
Each
$8,102.71(exc. GST)
Temporarily out of stock
ABB 1kA Tag Fuse, 200 x 89 x 119mm, 500V
  • RS Stock No. 251-3509
  • Mfr. Part No. 1SCA022637R4280
Each
$381.54(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 630A Ekip Dip LSI, 4 channels
  • RS Stock No. 259-3409
  • Mfr. Part No. 1SDA071343R1
Each
$12,856.35(exc. GST)
In Stock
Socomec 10A Tag Fuse, 14 X 51mm, 690V, 51mm
  • RS Stock No. 252-5311
  • Mfr. Part No. 170N1410
Each (In a Pack of 10)
$17.493(exc. GST)
Temporarily out of stock
Eaton 125A NH Fuse, 63 x 40 x 150mm, 500V ac
  • RS Stock No. 228-647
  • Mfr. Part No. 125NHG02B NH FUSE 125A 500V GG/GL SIZE 02
1 Pack of 3
$63.15(exc. GST)
Temporarily out of stock
Better World
ABB Emax2 Electronic Circuit Breaker 800A 1SDA07, 3 channels
  • RS Stock No. 259-3038
  • Mfr. Part No. 1SDA070893R1
Each
$12,600.54(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 800A 1SDA07, 3 channels
  • RS Stock No. 259-4144
  • Mfr. Part No. 1SDA072257R1
Each
$20,034.56(exc. GST)
Temporarily out of stock
Bourns Thermal Fuse +82°C 50 A, 28V
  • RS Stock No. 258-6411
  • Mfr. Part No. SC82AAB
Each (In a Bag of 5000)
$1.011(exc. GST)
1
286
1758
Results per page

Related links