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

1717 of 999+
Currently unavailable
Schurter SMD Non Resettable Fuse 4A, 125 V dc, 250V ac
  • RS Stock No. 173-8109
  • Mfr. Part No. 3404.2472.22
1 Reel of 1000
$1,995.95(exc. GST)
In Stock
Bourns Surface Mount Fuse 3.5A, 65V dc
  • RS Stock No. 245-9221P
  • Mfr. Part No. SF-1206F350M-2
Each (Supplied on a Reel)
$1.026(exc. GST)
In Stock
Littelfuse PC Board Non Resettable Fuse, Radial 1A, 125V ac/dc
  • RS Stock No. 738-3071P
  • Mfr. Part No. 0259001.T
Each (Supplied in a Bag)
$10.89(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 63A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 270-4729
  • Mfr. Part No. 3VA2163-6KQ36-0AA0
Each
$4,329.14(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 2.5kA 1SDA07, 3 channels
  • RS Stock No. 259-4317
  • Mfr. Part No. 1SDA072471R1
Each
$31,891.66(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB 4P 600A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 249-340
  • Mfr. Part No. 3VA6560-5HN46-2AA0
Each
$12,176.51(exc. GST)
In Stock
Socomec 32A F Cartridge Fuse, 14 x 51mm
  • RS Stock No. 223-2834
  • Mfr. Part No. 60530032
Each (In a Pack of 10)
$11.053(exc. GST)
In Stock
Schurter SMD Non Resettable Fuse 250mA, 125V ac/dc
  • RS Stock No. 733-4852P
  • Mfr. Part No. 3404.0110.22
Each (Supplied on a Reel)
$1.616(exc. GST)
In Stock
Schurter 20A T Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 703-2650P
  • Mfr. Part No. 8020.0605.PT
Each (Supplied in a Box)
$2.157(exc. GST)
Temporarily out of stock
Siemens, Sentron MCCB Molded Case Circuit Breaker 4P 1kA, Breaking Capacity 25 kA, Cable Mount
  • RS Stock No. 249-161
  • Mfr. Part No. 3VA6610-5JT46-0AA0
Each
$25,788.17(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 1.25kA Ekip Dip LSI, 4 channels
  • RS Stock No. 259-3607
  • Mfr. Part No. 1SDA071582R1
Each
$15,239.63(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 800A 1SDA07, 4 channels
  • RS Stock No. 259-3449
  • Mfr. Part No. 1SDA071391R1
Each
$13,277.25(exc. GST)
Temporarily out of stock
Eaton NZM Circuit Breaker for use with Circuit Breaker
  • RS Stock No. 248-915
  • Mfr. Part No. 192285 NZMH3-4-PX630/VAR
Each
$11,201.89(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 6.3kA 1SDA07, 4 / f channels
  • RS Stock No. 259-3959
  • Mfr. Part No. 1SDA072012R1
Each
$111,918.18(exc. GST)
In Stock
Circuit-breaker/thermal 1.5 A
  • RS Stock No. 577-280
  • Mfr. Part No. 4435.0198
Each
$14.69(exc. GST)
Temporarily out of stock
Schneider Electric ComPacT Control Unit for use with Compact NS630b to NS1600
  • RS Stock No. 341-517
  • Mfr. Part No. C5AWM
Each
$6,651.24(exc. GST)
In Stock
Schneider Electric Resi9 Resi9 XE DM MCB, 1P, 16A Curve D, 230V AC, 3000 A Breaking Capacity
  • RS Stock No. 287-6047
  • Mfr. Part No. R9EFD616
Each
$92.24(exc. GST)
In Stock
Schneider Electric Multi9 M9F1 MCB, 1P, 10A Curve B, 415V AC, 72V DC, 3 kA Breaking Capacity
  • RS Stock No. 212-122
  • Mfr. Part No. M9F10110
Each
$46.92(exc. GST)
Temporarily out of stock
Better World
ABB Emax2 Electronic Circuit Breaker 1kA 1SDA07, 3 channels
  • RS Stock No. 259-9929
  • Mfr. Part No. 1SDA070790R1
Each
$18,442.79(exc. GST)
Temporarily out of stock
Better World
ABB Emax2 Electronic Circuit Breaker 1.25kA Ekip Touch LI, 3 channels
  • RS Stock No. 259-3007
  • Mfr. Part No. 1SDA070844R1
Each
$11,019.72(exc. GST)
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