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

1752 of 999+
Schneider Electric Panelset Busbar
  • RS Stock No. 444-373
  • Mfr. Part No. NSYTBCN345
Each
$3,025.87(exc. GST)
Better World
Siemens, SENTRON MCCB 3P 25A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-4556
  • Mfr. Part No. 3VA2125-7HM32-0AA0
Each
$2,616.64(exc. GST)
Better World
Siemens, Sentron MCCB Molded Case Circuit Breaker 3P 100A, Breaking Capacity 3 kA
  • RS Stock No. 245-245
  • Mfr. Part No. 3VA6210-7KM31-0AA0
Each
$14,958.13(exc. GST)
Better World
Siemens, Sentron MCCB Molded Case Circuit Breaker 4P 100A, Breaking Capacity 3 kA
  • RS Stock No. 245-718
  • Mfr. Part No. 3VA6210-7HL41-2AA0
Each
$13,112.13(exc. GST)
ABB Emax2 Electronic Circuit Breaker 1.6kA Ekip G Touch LSIG, 4 channels
  • RS Stock No. 259-4719
  • Mfr. Part No. 1SDA072997R1
Each
$28,174.67(exc. GST)
Siemens SENTRON 5SY8 MCB, 4P, 2A Curve C, 400V AC, 60V DC, 70 kA Breaking Capacity
  • RS Stock No. 610-656
  • Mfr. Part No. 5SY8402-7
Each
$622.95(exc. GST)
Wickmann PC Board Non Resettable Fuse, Radial 315mA, 250V ac
  • RS Stock No. 227-2049P
  • Mfr. Part No. 3700315000
Each (Supplied as a Tape)
$2.06(exc. GST)
Schurter TA36 Rocker Circuit Breaker - TA36 2 Pole 60 V dc, 277 V ac Voltage Rating, 10A Current Rating
  • RS Stock No. 221-5643
  • Mfr. Part No. 3-128-327
1 Box of 10
$357.85(exc. GST)
Schurter 6.3A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 870-1641
  • Mfr. Part No. 7010.3510
Each (In a Pack of 10)
$5.539(exc. GST)
Better World
Siemens, SENTRON MCCB 4P 100A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 270-4034
  • Mfr. Part No. 3VA2110-8JP46-0AA0
Each
$4,742.00(exc. GST)
Schneider Electric EasyPact Electronic Circuit Breaker 50A, Plug In
  • RS Stock No. 122-341
  • Mfr. Part No. LV510304P
Each
$274.04(exc. GST)
ABB Emax2 Electronic Circuit Breaker 6.3kA Ekip G Touch LSIG, 3 channels
  • RS Stock No. 259-4448
  • Mfr. Part No. 1SDA072647R1
Each
$100,432.66(exc. GST)
Siemens Siemens Busbar
  • RS Stock No. 627-391
  • Mfr. Part No. 8PQ6000-5BA82
Each
$1,494.65(exc. GST)
ABB Emax2 Electronic Circuit Breaker 2.5kA 1SDA07, 4 channels
  • RS Stock No. 259-3756
  • Mfr. Part No. 1SDA071751R1
Each
$36,203.35(exc. GST)
Better World
Siemens, SENTRON MCCB 3P 100A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-4008
  • Mfr. Part No. 3VA2110-7MP32-0AA0
Each
$2,652.61(exc. GST)
Phoenix Contact 3 Phase Surge Protector, 26A, 264V ac, DIN Rail Mount
  • RS Stock No. 512-393
  • Mfr. Part No. 2817958
Each (In a Pack of 10)
$234.605(exc. GST)
Siemens, Sentron MCCB Molded Case Circuit Breaker 4P 1kA, Breaking Capacity 35 kA
  • RS Stock No. 249-137
  • Mfr. Part No. 3VA6610-6JT42-0AA0
Each
$27,357.88(exc. GST)
1-pole circuit breaker, 30A
  • RS Stock No. 577-475
  • Mfr. Part No. 1658-G21-02-P10-30A
Each
$9.94(exc. GST)
Schneider Electric, ComPacT NSX Circuit breaker 1P 125A, Breaking Capacity 25 KA
  • RS Stock No. 119-462
  • Mfr. Part No. C16N1TM125
Each
$1,820.86(exc. GST)
Siemens SENTRON Connection Kit
  • RS Stock No. 277-0836
  • Mfr. Part No. 3WA9111-0AW23
Each
$225.35(exc. GST)
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