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

289 of 999+
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 1P 125A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 271-9724
  • Mfr. Part No. 3VA1112-5ED12-0AA0
Each
$911.59(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 800A Ekip G Hi-Touch LSIG, 4 channels
  • RS Stock No. 259-4610
  • Mfr. Part No. 1SDA072880R1
Each
$23,565.69(exc. GST)
In Stock
RS PRO 25A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 180-078
1 Pack of 10
$622.45(exc. GST)
Last RS stock
Wickmann 0.2A Resettable Fuse, 24V dc
  • RS Stock No. 174-0790
  • Mfr. Part No. RF1345-000
Each (In a Pack of 20)
$0.746(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB 3P 60A, Breaking Capacity 25 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-673
  • Mfr. Part No. 3VA5160-4EC31-0AA0
Each
$1,123.36(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 800A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 250-045
  • Mfr. Part No. 3VA6580-6JT42-2AA0
Each
$22,357.25(exc. GST)
In Stock
Eaton 160A NH Fuse, NH1, 500V ac
  • RS Stock No. 181-8777
  • Mfr. Part No. 160NHG1B
Each
$25.04(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 5kA 1SDA07, 3 channels
  • RS Stock No. 259-3357
  • Mfr. Part No. 1SDA071272R1
Each
$84,078.01(exc. GST)
Temporarily out of stock
Better World
ABB Emax2 Electronic Circuit Breaker 2.5kA Ekip G Hi-Touch LSIG, 3 channels
  • RS Stock No. 259-3221
  • Mfr. Part No. 1SDA071090R1
Each
$34,790.90(exc. GST)
Temporarily out of stock
Better World
ABB Emax2 Electronic Circuit Breaker 4kA Ekip Dip LSI, 3 channels
  • RS Stock No. 259-3283
  • Mfr. Part No. 1SDA071192R1
Each
$36,575.04(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 630A Ekip G Touch LSIG, 4 channels
  • RS Stock No. 259-3423
  • Mfr. Part No. 1SDA071357R1
Each
$20,700.28(exc. GST)
Temporarily out of stock
Better World
ABB Emax2 Electronic Circuit Breaker 4kA Ekip Touch LI, 3 channels
  • RS Stock No. 259-3296
  • Mfr. Part No. 1SDA071204R1
Each
$41,704.55(exc. GST)
Currently unavailable
Schneider Electric EasyPact Electronic Circuit Breaker 80A, Fixed
  • RS Stock No. 122-399
  • Mfr. Part No. LV510636
Each
$1,133.88(exc. GST)
Temporarily out of stock
Better World
Siemens, Sentron MCCB Molded Case Circuit Breaker 4P 250A, Breaking Capacity 3 kA
  • RS Stock No. 245-670
  • Mfr. Part No. 3VA6225-6KL41-2AA0
Each
$14,138.19(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 40A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-4667
  • Mfr. Part No. 3VA2140-7JQ46-0AA0
Each
$4,602.63(exc. GST)
Last RS stock
Siemens Fuse Holder LV HRC Cover
  • RS Stock No. 203-2045
  • Mfr. Part No. 3NX3116
Each (In a Pack of 10)
$7.863(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 250A, Fixed Mount
  • RS Stock No. 260-8149
  • Mfr. Part No. C40S4TM250D
Each
$6,991.05(exc. GST)
In Stock
Eaton Non Resettable Fuse 40A, 72 V dc, 250V ac
  • RS Stock No. 171-6802
  • Mfr. Part No. 1025HC40-R
Each (In a Pack of 5)
$6.526(exc. GST)
Temporarily out of stock
Schneider Electric PowerPact Circuit Breaker - PowerPacT 4 Pole 347V ac Voltage Rating Clip-On, 110A Current Rating
  • RS Stock No. 205-364
  • Mfr. Part No. BDF46110
Each
$3,326.81(exc. GST)
Currently unavailable
Wickmann 0.5A Resettable Fuse, 13.2V dc
  • RS Stock No. 174-0389
  • Mfr. Part No. RF1347-000
1 Reel of 15000
$6,687.62(exc. GST)
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