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

163 of 999+
Eaton Eaton Moeller NZM Rotary Handle for use with N(S)3(-4), NZM3(-4), PN3(-4)
  • RS Stock No. 255-548
  • Mfr. Part No. 260129 NZM3-XDV
Each
$260.95(exc. GST)
Siemens SENTRON Connection Unit for use with Circuit Breaker 3WL10 / 3VA27
  • RS Stock No. 266-699
  • Mfr. Part No. 3VW9011-0AN33
1 Kit
$558.37(exc. GST)
Better World
Schneider Electric TeSys Thermal Circuit Breaker - GV4PB 3 Pole 690V ac Voltage Rating, 115A Current Rating
  • RS Stock No. 209-5323
  • Mfr. Part No. GV4PB115N
Each
$1,324.41(exc. GST)
Mersen 1A Melamine Cartridge Fuse, 10 x 38mm
  • RS Stock No. 715-8982
  • Mfr. Part No. DCT1-2
Each
$63.56(exc. GST)
Siemens ALPHA Distribution Board
  • RS Stock No. 272-0288
  • Mfr. Part No. 8GK1061-4KK30
Each
$3,665.60(exc. GST)
Schneider Electric Acti9 Acti9 iC60 MCB, 1P, 1A Curve C, 500V AC, 72V DC, 230 V Breaking Capacity
  • RS Stock No. 479-575
  • Mfr. Part No. A9F94101
Each
$293.70(exc. GST)
Siemens SENTRON Option Plug
  • RS Stock No. 277-0962
  • Mfr. Part No. 3WA9111-0EX08
Each
$2,798.95(exc. GST)
Eaton 6A T Melamine Cartridge Fuse, 10 x 38mm
  • RS Stock No. 854-8890
  • Mfr. Part No. FNQ-R-6
Each
$158.74(exc. GST)
RS PRO 30A F Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 177-8038
Each (In a Box of 500)
$0.806(exc. GST)
RS PRO 3.15A T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 563-621
Each (In a Pack of 10)
$1.419(exc. GST)
Eaton IZMX16H4-P06F-1 Electronic Circuit Breaker 630A , Fixed
  • RS Stock No. 127-744
  • Mfr. Part No. 183452 IZMX16H4-P06F-1
Each
$21,424.79(exc. GST)
WJ Furse Copper Earth Bar L. 725mm x W. 90mm x H. 96mm 10 Ways
  • RS Stock No. 124-2502
  • Mfr. Part No. 7TCA083670R0647 LK243-10
Each
$694.11(exc. GST)
RS PRO 5A T Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 611-0282
Each (In a Pack of 10)
$1.854(exc. GST)
RS PRO 5A FF Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 420-189
Each (In a Pack of 10)
$4.159(exc. GST)
Schneider Electric Shunt Trip Shunt trip for use with ComPact NS630b → 1600, ComPact NS1600b → 3200
  • RS Stock No. 247-1856
  • Mfr. Part No. 33662
Each
$738.40(exc. GST)
Schneider Electric, ComPacT NSX MCCB 3P 80A, Breaking Capacity 25 kA, Panel Mount
  • RS Stock No. 654-817
  • Mfr. Part No. IL0803P25
Each
$898.13(exc. GST)
nVent ERICO Neutral Double Busbar Busbar
  • RS Stock No. 646-809
  • Mfr. Part No. 568716
Each
$9.81(exc. GST)
Socomec 32A NH Fuse, 0, 500V
  • RS Stock No. 252-5330
  • Mfr. Part No. 66000032
Each (In a Pack of 3)
$26.40(exc. GST)
Siemens 200A Centred Tag Fuse, NH2, 690V
  • RS Stock No. 210-6929
  • Mfr. Part No. 3NA7240-6
Each (In a Pack of 3)
$163.883(exc. GST)
Schurter Surface Mount Fuse 5A, 250V ac
  • RS Stock No. 270-7943
  • Mfr. Part No. 3403.0173.11
Each
$2.22(exc. GST)
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