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

158 of 999+
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 40A, Fixed Mount
  • RS Stock No. 260-7558
  • Mfr. Part No. C11E3TM040L
Each
$947.55(exc. GST)
Temporarily out of stock
SENTRON Nut Keeper Kit for use with 3VA52 Series
  • RS Stock No. 263-875
  • Mfr. Part No. 3VA9234-0QA00
1 Kit
$284.13(exc. GST)
In Stock
Siemens SENTRON 3 Phase Busbar, 18mm Pitch
  • RS Stock No. 202-7131
  • Mfr. Part No. 5ST3738
Each
$25.20(exc. GST)
Temporarily out of stock
Eaton 15A 0.001 x 0.001in Open Fuse Fuse Block, 600V
  • RS Stock No. 229-259
  • Mfr. Part No. BG3012SQ
1 Pack of 8
$1,236.73(exc. GST)
Temporarily out of stock
HENSEL ENYSTAR Distribution Board, 75 A
  • RS Stock No. 117-696
  • Mfr. Part No. FP FC 36
Each
$141.06(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 50A, Fixed Mount
  • RS Stock No. 260-7498
  • Mfr. Part No. C10W3MA050
Each
$3,073.79(exc. GST)
In Stock
Eaton 11A F Melamine Cartridge Fuse, 10 x 38mm
  • RS Stock No. 459-7924
  • Mfr. Part No. DMM-B-11A
Each (In a Pack of 5)
$168.106(exc. GST)
Temporarily out of stock
Better World
Siemens SIRIUS Electronic Circuit Breaker 36A 3RV2, 3 channels , DIN Rail Mount
  • RS Stock No. 160-068
  • Mfr. Part No. 3RV2431-4PA10
Each
$950.15(exc. GST)
In Stock
Wickmann 30A F Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 174-0628
  • Mfr. Part No. 0505030.MXEP
Each (In a Pack of 5)
$11.874(exc. GST)
In Stock
Eaton 8A Ceramic Cartridge Fuse, 14 x 51mm
  • RS Stock No. 703-8419P
  • Mfr. Part No. C14G8
Each (Supplied in a Bag)
$4.436(exc. GST)
In Stock
Better World
Schneider Electric Spreader for use with Compact Nsx 400/630, Easypact Cvs 400/630
  • RS Stock No. 221-1235
  • Mfr. Part No. LV432492
Each
$393.10(exc. GST)
Temporarily out of stock
Better World
Siemens, Sentron MCCB Molded Case Circuit Breaker 3P 100A, Breaking Capacity 3 kA
  • RS Stock No. 245-706
  • Mfr. Part No. 3VA6210-6JP31-2AA0
Each
$11,112.22(exc. GST)
In Stock
Littelfuse Fuse Holder Cover Puller
  • RS Stock No. 360-7323
  • Mfr. Part No. 0SPL0001T
Each (In a Pack of 5)
$9.07(exc. GST)
In Stock
Finder Busbar, 10 A - 250V, 15.4mm Pitch
  • RS Stock No. 123-2857
  • Mfr. Part No. 097.52
Each
$5.95(exc. GST)
In Stock
Schurter 1A F Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 830-4259
  • Mfr. Part No. 8020.5068.G
Each (In a Pack of 10)
$1.569(exc. GST)
In Stock
Sensata Airpax Airpax Thermal Circuit Breaker - 219 3 Pole 480V ac Voltage Rating Panel Mount, 30A Current Rating
  • RS Stock No. 275-0071
  • Mfr. Part No. 219-3-1-66-5-8-30
Each
$641.25(exc. GST)
In Stock
Littelfuse 250mA F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 541-4319
  • Mfr. Part No. 0217.250MXP
Each (In a Pack of 10)
$2.016(exc. GST)
In Stock
RS PRO PC Board Non Resettable Fuse 3.15A, 250V ac
  • RS Stock No. 911-3552
Each (In a Pack of 10)
$0.494(exc. GST)
Temporarily out of stock
ABB PBSC 3, 3+N Phase Busbar
  • RS Stock No. 200-517
  • Mfr. Part No. 1STQ007422A0000
Each
$2,877.12(exc. GST)
Temporarily out of stock
ABB AC Switch Disconnectors Accessories Shaft for use with Switch Disconnectors
  • RS Stock No. 259-9753
  • Mfr. Part No. 1SCA111275R1001
1 Box of 10
$199.68(exc. GST)
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