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

34958 Products showing for Fuses & Circuit Breakers

1 of 999+
Better World
Schneider Electric Acti 9 iC60N MCB, 1P, 6A Curve C, 100 → 133V AC, 12 → 48V DC, 6 kA Breaking Capacity
  • RS Stock No. 790-8850
  • Mfr. Part No. A9F44106
Each
$19.54(exc. GST)
RS PRO 1A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 563-380
Each (In a Pack of 10)
$0.82(exc. GST)
RS PRO 30A Rail Mount Fuse Holder for 5 x 20mm Fuse, 1P, 500V
  • RS Stock No. 242-0497
1 Bag of 10
$79.77(exc. GST)
Better World
Schneider Electric Acti 9 iC60N MCB, 1P, 10A Curve C, 100 → 133V AC, 12 → 48V DC, 6 kA Breaking Capacity
  • RS Stock No. 790-8853
  • Mfr. Part No. A9F44110
Each
$18.61(exc. GST)
Schneider Electric Acti 9 iC60N MCB, 1P, 2A Curve C
  • RS Stock No. 230-6651
  • Mfr. Part No. A9F44102
Each
$18.61(exc. GST)
RS PRO Rail Mount Fuse Holder
  • RS Stock No. 501-871
Each
$28.86(exc. GST)
RS PRO 2A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 563-431
Each (In a Pack of 10)
$0.82(exc. GST)
ETA Thermal Circuit Breaker - 1658 Single Pole 250V Voltage Rating Panel Mount, 10A Current Rating
  • RS Stock No. 273-0860
  • Mfr. Part No. 1658-G21-02-P10-10A
Each
$13.47(exc. GST)
Eaton 4A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 703-8370
  • Mfr. Part No. C10G4
Each (In a Pack of 10)
$3.008(exc. GST)
RS PRO Single Phase Industrial Surge Protector, 10kA, 1.1kV, DIN Rail Mount
  • RS Stock No. 101-748
Each
$59.71(exc. GST)
Siemens ALPHA Busbar
  • RS Stock No. 226-0832
  • Mfr. Part No. 8GK9733-0KK20
Each
$48.11(exc. GST)
ETA Thermal Circuit Breaker - 1658 Single Pole 250V Voltage Rating Panel Mount, 5A Current Rating
  • RS Stock No. 273-0854
  • Mfr. Part No. 1658-G21-02-P10-5A
Each
$12.97(exc. GST)
Schneider Electric Acti 9 iC60N MCB, 2P, 10A Curve C
  • RS Stock No. 230-6657
  • Mfr. Part No. A9F44210
Each
$72.50(exc. GST)
RS PRO 10A Inline Fuse Holder for 5x20mm Fuse, 250V
  • RS Stock No. 237-5259
Each
$5.94(exc. GST)
Rittal Earth Bar L. 450mm x W. 15mm x H. 5mm
  • RS Stock No. 826-2868
  • Mfr. Part No. 7113000
Each
$144.55(exc. GST)
RS PRO 6.3A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 563-706
Each (In a Pack of 10)
$0.45(exc. GST)
Eaton 10A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 703-8386
  • Mfr. Part No. C10G10
Each (In a Pack of 10)
$3.008(exc. GST)
Eaton 6A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 703-8374
  • Mfr. Part No. C10G6
Each (In a Pack of 10)
$3.008(exc. GST)
Schneider Electric Acti 9 iC60N MCB, 3P, 50A Curve C
  • RS Stock No. 230-6671
  • Mfr. Part No. A9F44350
Each
$97.39(exc. GST)
RS PRO 5A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 541-3108
Each (In a Pack of 10)
$0.609(exc. GST)
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