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

1722 of 999+
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 800A 1SDA07, 4 channels
  • RS Stock No. 259-4515
  • Mfr. Part No. 1SDA072737R1
Each
$16,491.35(exc. GST)
Temporarily out of stock
Schneider Electric, PowerPact B Circuit breaker 3P 25A, Breaking Capacity 18 KA, Clip-On
  • RS Stock No. 119-645
  • Mfr. Part No. BDL36025LU
Each
$1,604.37(exc. GST)
Temporarily out of stock
Schneider Electric PowerPact J Cover Frame for use with Circuit Breaker
  • RS Stock No. 438-797
  • Mfr. Part No. NLGF36250U31XTW
Each
$15,231.48(exc. GST)
Temporarily out of stock
RS PRO SMD Non Resettable Fuse 20A, 250V
  • RS Stock No. 182-3969P
Each (Supplied in a Box)
$4.578(exc. GST)
Temporarily out of stock
Socomec 100A F Cartridge Fuse, 22 x 58mm
  • RS Stock No. 223-2851
  • Mfr. Part No. 60630100
Each (In a Pack of 10)
$24.306(exc. GST)
In Stock
Wickmann PC Board Non Resettable Fuse, Radial 630mA, 250V ac
  • RS Stock No. 296-3284P
  • Mfr. Part No. 3720630000
Each (Supplied as a Tape)
$1.805(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 630A, Breaking Capacity 30 kA, Fixed Mount
  • RS Stock No. 346-972
  • Mfr. Part No. C063H42AFM
Each
$22,070.33(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 600A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 249-620
  • Mfr. Part No. 3VA6560-7JP46-0AA0
Each
$15,046.86(exc. GST)
Temporarily out of stock
Better World
Siemens, Sentron MCCB Molded Case Circuit Breaker 4P 40A, Breaking Capacity 2.5 kA
  • RS Stock No. 245-507
  • Mfr. Part No. 3VA6140-6KQ41-0AA0
Each
$9,354.02(exc. GST)
Temporarily out of stock
Wickmann Panel Mount Fuse Holder
  • RS Stock No. 174-0268
  • Mfr. Part No. 03400313Z
Each (In a Box of 20)
$124.486(exc. GST)
In Stock
Schneider Electric RCBO, 20A Current Rating, 2P Poles, 300mA Trip Sensitivity, Type C, Acti9 Range
  • RS Stock No. 130-446
  • Mfr. Part No. A9D50220
Each
$1,816.77(exc. GST)
In Stock
Bourns 6A F Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 254-4190
  • Mfr. Part No. PF-HT1-6
Each
$44.84(exc. GST)
Temporarily out of stock
Lovato Single Phase Surge Protector, 50kA, DIN Rail Mount
  • RS Stock No. 248-5659
  • Mfr. Part No. SA0B2PA320R
Each
$567.42(exc. GST)
In Stock
Schneider Electric Resi9 R9F2 MCB, 1P, 32A Curve B, 230V AC, 6 kA Breaking Capacity
  • RS Stock No. 212-024
  • Mfr. Part No. R9F23132
Each
$42.60(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 63A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 270-4696
  • Mfr. Part No. 3VA2163-0KP32-0AA0
Each
$4,744.07(exc. GST)
Last RS stock
RS PRO SMD Non Resettable Fuse 100mA, 125V
  • RS Stock No. 182-4086P
Each (Supplied in a Box)
$1.812(exc. GST)
Temporarily out of stock
Eaton Eaton xEnergy Main Busbar Support for use with Busbar
  • RS Stock No. 245-872
  • Mfr. Part No. 133072 XNNS-30X20
1 Pack of 5
$853.81(exc. GST)
In Stock
Bourns Surface Mount Fuse 10A, 32V dc
  • RS Stock No. 245-9240P
  • Mfr. Part No. SF-1206SA1000R-2
Each (Supplied on a Reel)
$1.72(exc. GST)
Currently unavailable
Schneider Electric EasyPact Electronic Circuit Breaker 25A, Fixed
  • RS Stock No. 122-516
  • Mfr. Part No. LV510591
Each
$835.88(exc. GST)
Currently unavailable
Schneider Electric EasyPact Electronic Circuit Breaker 100A, Plug In
  • RS Stock No. 122-347
  • Mfr. Part No. LV510317P
Each
$338.75(exc. GST)
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