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+
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, 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)
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)
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)
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 Single Phase Industrial Surge Protector, 10kA, 1.1kV, DIN Rail Mount
  • RS Stock No. 101-748
Each
$59.71(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 15A Blue Blade Car Fuse, 32V dc
  • RS Stock No. 563-750
Each (In a Pack of 10)
$1.425(exc. GST)
RS PRO 2A T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 563-722
Each (In a Pack of 10)
$0.812(exc. GST)
Siemens ALPHA Busbar
  • RS Stock No. 226-0832
  • Mfr. Part No. 8GK9733-0KK20
Each
$48.11(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 2A T Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 668-6079
Each (In a Pack of 10)
$1.35(exc. GST)
RS PRO 500mA T Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 668-6063
Each (In a Pack of 10)
$1.35(exc. GST)
RS PRO 100mA F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 610-9579
Each (In a Pack of 10)
$1.475(exc. GST)
RS PRO F, T Fuse Kit
  • RS Stock No. 893-8530
Each
$160.22(exc. GST)
RS PRO 3A T Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 668-6082
Each (In a Pack of 10)
$1.371(exc. GST)
RS PRO HBC, LBC Fuse Kit
  • RS Stock No. 420-252
1 Kit
$140.81(exc. GST)
RS PRO 10A FF Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 420-218
Each (In a Pack of 10)
$5.864(exc. GST)
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