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

166 of 999+
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 250A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 260-471
  • Mfr. Part No. 3VA6225-7HL31-0AA0
Each
$9,285.60(exc. GST)
Schurter 16A PCB Mount Fuse Holder for 5 x 20mm Fuse, 1P, 250V ac
  • RS Stock No. 737-8237
  • Mfr. Part No. 3101.0040
Each (In a Bag of 5)
$7.992(exc. GST)
Fuse/5x25mm 6.3A Medium Slow-Blow 241
  • RS Stock No. 565-372
  • Mfr. Part No. 24116300021
Each
$16.46(exc. GST)
Better World
ABB Emax2 Electronic Circuit Breaker 2kA Ekip G Hi-Touch LSIG, 3 channels
  • RS Stock No. 259-3195
  • Mfr. Part No. 1SDA071060R1
Each
$29,252.59(exc. GST)
Better World
ABB Compact Home SH200 MCB, 1P, 20A Curve C, 440V AC, 60V DC, 6 kA Breaking Capacity
  • RS Stock No. 539-8245
  • Mfr. Part No. 2CDS211001R0204 SH201-C20
Each
$37.64(exc. GST)
Schurter 30A Rail Mount Fuse Holder for 10 x 38mm Fuse, 2P, 600V ac
  • RS Stock No. 712-4796P
  • Mfr. Part No. 0091.0002
Each (Supplied in a Box)
$52.26(exc. GST)
RS PRO 6.3A Fuse Holder for 5 x 20mm Fuse, 1P, 250V
  • RS Stock No. 262-4256
1 Box of 10
$59.31(exc. GST)
Schurter 6.3A Inline Fuse Holder for 6.3 x 32mm Fuse, 32V dc
  • RS Stock No. 703-2824P
  • Mfr. Part No. 8601.2005
Each (Supplied in a Box)
$2.413(exc. GST)
Wickmann 6.3A PCB Mount Fuse Holder, 250V ac
  • RS Stock No. 110-7900P
  • Mfr. Part No. 56000001009
Each (Supplied in a Box)
$2.036(exc. GST)
RS PRO 1A T Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 177-8057
1 Box of 1000
$496.58(exc. GST)
Phoenix Contact 20A Slow-Blow Cartridge Fuse, 10 x 38mm
  • RS Stock No. 197-5971
  • Mfr. Part No. 2903384
Each
$32.93(exc. GST)
RS PRO 2.5A F Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 668-6039
Each (In a Pack of 10)
$1.748(exc. GST)
Schneider Electric, ComPacT New Generation MCCB 3P 160A, Fixed Mount
  • RS Stock No. 260-7818
  • Mfr. Part No. C16S3
Each
$2,692.69(exc. GST)
Siemens 400A Centred Tag Fuse, NH2, 69V
  • RS Stock No. 230-2999
  • Mfr. Part No. 3NE1332-2
Each (In a Pack of 3)
$608.603(exc. GST)
Eaton Eaton xEnergy Main Busbar Support for use with Busbar
  • RS Stock No. 257-112
  • Mfr. Part No. 283890 XDSF12
Each
$268.44(exc. GST)
Siemens SENTRON Auxiliary Switch Kit for use with Circuit Breaker 3VA4/5/6
  • RS Stock No. 272-0235
  • Mfr. Part No. 3VA9978-0AA12
Each
$287.13(exc. GST)
Siemens 20A NH Fuse, NH000, 500V ac
  • RS Stock No. 397-559
  • Mfr. Part No. 3NA6807
Each (In a Pack of 3)
$17.897(exc. GST)
Eaton 32A Centred Tag Fuse, NH000, 690V ac
  • RS Stock No. 182-1435
  • Mfr. Part No. 170M1562D
Each (In a Box of 10)
$336.835(exc. GST)
RS PRO PC Board Non Resettable Fuse, Axial 1.5A, 125V ac/dc
  • RS Stock No. 764-9514
Each (In a Pack of 10)
$0.827(exc. GST)
Limitor Thermal Fuse +125°C 2.5 A, 250V ac
  • RS Stock No. 616-9969
  • Mfr. Part No. Q82 A 125 05 100
Each
$17.13(exc. GST)
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