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

303 of 999+
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 800A, Breaking Capacity 30 kA, Fixed Mount
  • RS Stock No. 432-856
  • Mfr. Part No. C080N32EFM
Each
$18,209.21(exc. GST)
In Stock
Littelfuse Non-Resettable Surface Mount Fuse 60A, 250V ac
  • RS Stock No. 229-1426P
  • Mfr. Part No. 0456060.DRSDE
Each (Supplied on a Reel)
$11.86(exc. GST)
In Stock
Mersen 20A FF Cartridge Fuse, 14 x 51mm
  • RS Stock No. 136-0608
  • Mfr. Part No. L1017185 / FR14GR69V20T
Each
$38.61(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 600A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 249-572
  • Mfr. Part No. 3VA6560-6JP32-2AA0
Each
$11,571.03(exc. GST)
Temporarily out of stock
Eaton PC Board Non Resettable Fuse, Radial 2A, 250V ac
  • RS Stock No. 169-9528
  • Mfr. Part No. SS-5-2A-BK
Each (In a Bag of 200)
$2.623(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 400A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 249-294
  • Mfr. Part No. 3VA6440-5KT41-0AA0
Each
$11,795.26(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 100A, Breaking Capacity 55 kA, DIN Rail Mount
  • RS Stock No. 271-9672
  • Mfr. Part No. 3VA11105FE420AA0
Each
$1,456.21(exc. GST)
In Stock
Mersen 6A Slow-Blow Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 247-2951
  • Mfr. Part No. Y084799
1 Box of 10
$563.72(exc. GST)
In Stock
ABB 20A Centred Tag Fuse, NH000, 500V
  • RS Stock No. 779-9959
  • Mfr. Part No. OFAF000H20 1SCA022627R0740
Each
$11.33(exc. GST)
Temporarily out of stock
Eaton Eaton Moeller xPole 3 Phase Busbar, 690V, 53.4mm Pitch
  • RS Stock No. 262-836
  • Mfr. Part No. 303366 EVG-3PHAS/N/6MODUL/LS
Each
$27.07(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 600A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 249-459
  • Mfr. Part No. 3VA6560-7HM42-0AA0
Each
$13,252.88(exc. GST)
Temporarily out of stock
Eaton 4A FF Ceramic Cartridge Fuse, 50 x 13.2mm
  • RS Stock No. 228-884
  • Mfr. Part No. 4D16Q
1 Pack of 10
$59.08(exc. GST)
Temporarily out of stock
Schneider Electric Horizontal Distribution Length, 2m, 40A, Canalis Series
  • RS Stock No. 214-784
  • Mfr. Part No. KBB40ED2202TW
Each
$460.86(exc. GST)
In Stock
Littelfuse PC Board Non Resettable Fuse, Radial 3.15A, 250V ac
  • RS Stock No. 895-1678P
  • Mfr. Part No. 37213150411
Each (Supplied in a Bag)
$1.093(exc. GST)
Temporarily out of stock
35A Cartridge Fuse, 21 x 87mm
  • RS Stock No. 262-966
  • Mfr. Part No. BAO35
1 Pack of 20
$1,002.27(exc. GST)
In Stock
Better World
Siemens, SENTRON MCCB 3P 80A, Breaking Capacity 25 kA, Fixed Mount
  • RS Stock No. 874-4339
  • Mfr. Part No. 3VA1180-3ED36-0AA0
Each
$919.22(exc. GST)
Temporarily out of stock
Siemens 630A Tag Fuse, NH3, 1kV
  • RS Stock No. 608-737
  • Mfr. Part No. 3NC3336-1U
1 Pack of 3
$1,439.71(exc. GST)
Temporarily out of stock
Siemens, Sentron MCCB Molded Case Circuit Breaker 3P 1kA, Breaking Capacity 25 kA, Cable Mount
  • RS Stock No. 249-221
  • Mfr. Part No. 3VA6610-5HL36-0AA0
Each
$14,755.33(exc. GST)
In Stock
Better World
Schneider Electric Acti 9 iC60L MCB, 2P, 10A Curve C, 100 → 130V AC, 12 → 144V DC, 10 kA Breaking Capacity
  • RS Stock No. 734-9400
  • Mfr. Part No. A9F94210
Each
$366.29(exc. GST)
In Stock
Siemens SENTRON 2 Phase Busbar
  • RS Stock No. 187-5197
  • Mfr. Part No. 5ST3735
Each
$577.04(exc. GST)
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