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

146 of 999+
In Stock
Schneider Electric Acti9 1 Phase Distribution Board, 12 Way, 125 A
  • RS Stock No. 207-257
  • Mfr. Part No. SE125A12
Each
$435.07(exc. GST)
In Stock
Eaton 63A NH Fuse, NH00, 500V
  • RS Stock No. 181-8785
  • Mfr. Part No. 63NHG00B
Each
$14.95(exc. GST)
Temporarily out of stock
Eaton 63A Base Mount Fuse Holder for D02mm Fuse, 1P, 400V
  • RS Stock No. 261-732
  • Mfr. Part No. FRN02-SD
1 Pack of 15
$220.29(exc. GST)
In Stock
RS PRO Three Phase Industrial Surge Protector, 50kA, 1.35kV, DIN Rail Mount
  • RS Stock No. 101-795
Each
$845.47(exc. GST)
In Stock
Littelfuse SMD Non Resettable Fuse 5A, 125V ac/dc
  • RS Stock No. 541-3445P
  • Mfr. Part No. 0451005.MRL
Each (Supplied on a Reel)
$1.911(exc. GST)
Temporarily out of stock
Siemens SENTRON 5SY7 MCB, 3P, 2A Curve D, 400V AC, 60V DC, 50 kA Breaking Capacity
  • RS Stock No. 610-389
  • Mfr. Part No. 5SY7302-8
Each
$463.76(exc. GST)
In Stock
Eaton 20A Ceramic Cartridge Fuse, 22 x 58mm
  • RS Stock No. 703-8453P
  • Mfr. Part No. C22G20
Each (Supplied in a Box)
$7.84(exc. GST)
Temporarily out of stock
Schneider Electric Tee Elbow Busbar Trunking, 290mm, 630A, Canalis Series
  • RS Stock No. 354-309
  • Mfr. Part No. KSA630DTC40
Each
$3,364.97(exc. GST)
Temporarily out of stock
Schneider Electric Acti 9 iC60N MCB, 3P, 2A Curve C
  • RS Stock No. 230-6661
  • Mfr. Part No. A9F44302
Each
$71.82(exc. GST)
Temporarily out of stock
Better World
Schneider Electric, ComPacT NSX MCCB 4P 160A, Fixed Mount
  • RS Stock No. 254-6335
  • Mfr. Part No. C12N44V160L
Each
$6,603.96(exc. GST)
Temporarily out of stock
Eaton 600A T Cartridge Fuse, 64 x 203mm
  • RS Stock No. 182-1340
  • Mfr. Part No. LPJ-600SP
Each
$2,451.68(exc. GST)
In Stock
Schurter 2.5A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 167-7112
  • Mfr. Part No. 70103450
Each (In a Pack of 10)
$5.413(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 400A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 249-291
  • Mfr. Part No. 3VA6440-5KQ31-0AA0
Each
$10,248.00(exc. GST)
Temporarily out of stock
RS PRO Single Phase Industrial Surge Protector, 40kA, 1.25kV, DIN Rail Mount
  • RS Stock No. 101-799
Each
$243.60(exc. GST)
In Stock
Phoenix Contact Electronic Device Circuit Breaker Electronic Circuit breaker 3A 24V PTCB, 1 channels , DIN Rail Mount
  • RS Stock No. 207-2805
  • Mfr. Part No. 2909909
Each
$79.66(exc. GST)
In Stock
SIBA 400A Centred Tag Fuse, NH2, 500V ac
  • RS Stock No. 421-823
  • Mfr. Part No. 20-004-13/400A
Each
$59.53(exc. GST)
In Stock
Eaton Fuse Holder Trip Indicator Kit
  • RS Stock No. 182-1492
  • Mfr. Part No. MC-700
Each
$310.73(exc. GST)
Temporarily out of stock
Siemens SENTRON Conversion Kit
  • RS Stock No. 277-0927
  • Mfr. Part No. 3WA9111-0EK32
1 Set
$452.39(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB 3P 35A, Breaking Capacity 25 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-595
  • Mfr. Part No. 3VA5135-6EC31-1AA0
Each
$1,730.86(exc. GST)
Limited stock
SIBA 10A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 314-4800
  • Mfr. Part No. 50-179-06/10A
Each (In a Pack of 5)
$23.344(exc. GST)
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