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

34912 Products showing for Fuses & Circuit Breakers

90 of 999+
Better World
Schneider Electric Acti 9 iC60L MCB, 1P, 20A Curve C, 15 kA Breaking Capacity
  • RS Stock No. 219-9267
  • Mfr. Part No. A9F94120
Each
$194.73(exc. GST)
Siemens 1A F Cartridge Fuse, 5 x 20mm
  • RS Stock No. 271-3207
  • Mfr. Part No. 8WA1822-7EF16
Each (In a Pack of 10)
$5.904(exc. GST)
Legrand 10A Ceramic Cartridge Fuse, 10 x 25mm
  • RS Stock No. 293-8137
  • Mfr. Part No. 0 116 10
Each (In a Pack of 10)
$3.991(exc. GST)
Schneider Electric, NSX MCCB 3P 630A, Breaking Capacity 50 kA, Fixed Mount
  • RS Stock No. 219-8378
  • Mfr. Part No. LV432899
Each
$11,747.34(exc. GST)
Hager NFN MCB, 1P, 2A Curve C, 230 → 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 597-902
  • Mfr. Part No. NFN102
Each
$109.68(exc. GST)
Phoenix Contact Thermal Circuit Breaker - TCP 2A Single Pole 65 V dc, 250V ac Voltage Rating On Base Element, 2A
  • RS Stock No. 801-6902
  • Mfr. Part No. 0712217
Each
$50.22(exc. GST)
Eaton 45A Cartridge Fuse, 17 x 35mm
  • RS Stock No. 417-363
  • Mfr. Part No. C4545
Each (In a Pack of 5)
$16.902(exc. GST)
Better World
Schneider Electric 3 Phase Surge Protector, DIN Rail Mount
  • RS Stock No. 822-8054
  • Mfr. Part No. A9L40601
Each
$757.60(exc. GST)
RS PRO Industrial Surge Protector, 50kA, 5.1kV, DIN Rail Mount
  • RS Stock No. 101-758
Each
$300.93(exc. GST)
Littelfuse 80A Red Bolt Down Car Fuse, 32V dc
  • RS Stock No. 787-4407P
  • Mfr. Part No. 0298080.ZXEH
Each (Supplied in a Bag)
$11.52(exc. GST)
RS PRO 8A FF Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 420-202
Each (In a Pack of 10)
$10.792(exc. GST)
Phoenix Contact Single Phase Surge Arrester, 40kA, = 1.5kV, DIN Rail Mount
  • RS Stock No. 249-9517
  • Mfr. Part No. 2804432
Each
$456.40(exc. GST)
Better World
Schneider Electric Acti 9 C60H-DC MCB, 2P, 63A Curve C, 500V DC, 20 kA Breaking Capacity
  • RS Stock No. 776-3222
  • Mfr. Part No. A9N61539
Each
$178.74(exc. GST)
Littelfuse 500mA F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 541-4347
  • Mfr. Part No. 0217.500MXP
Each (In a Pack of 10)
$0.638(exc. GST)
Eaton 250A Tag Fuse, 660V ac, 133mm
  • RS Stock No. 260-698
  • Mfr. Part No. TKM250
Each
$201.80(exc. GST)
Bourns 400A Tag Fuse, 66mm, 800V ac/dc, 24.1mm
  • RS Stock No. 254-4154
  • Mfr. Part No. PF-FB2-400
Each (In a Box of 10)
$259.536(exc. GST)
Mersen 15A F GMG Cartridge Fuse, 10 x 38mm
  • RS Stock No. 914-4418
  • Mfr. Part No. ATMR15
Each
$108.12(exc. GST)
Legrand 16A F Ceramic Cartridge Fuse, 10.3 x 31.5mm
  • RS Stock No. 293-8238
  • Mfr. Part No. 0 126 16
Each (In a Pack of 10)
$6.223(exc. GST)
Schneider Electric, ComPacT MCCB 3P 400A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 260-8125
  • Mfr. Part No. C40N32D400
Each
$8,324.13(exc. GST)
Bulgin 10A Inline Fuse Holder for 5 x 20mm Fuse, 250V ac
  • RS Stock No. 414-601
  • Mfr. Part No. FX0380
Each (In a Pack of 5)
$13.024(exc. GST)
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