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

117 of 999+
RS PRO 2.5A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 563-435
Each (In a Pack of 10)
$0.902(exc. GST)
Eaton 125mA T Nickel Plated Spring Brass (Terminal) Cartridge Fuse, 0.41 x 0.41in
  • RS Stock No. 228-947
  • Mfr. Part No. FNQ-1/8
1 Pack of 10
$1,263.49(exc. GST)
Sensata Airpax Airpax Thermal Circuit Breaker - IELK111 Single Pole Panel Mount, 100A Current Rating
  • RS Stock No. 275-0258
  • Mfr. Part No. IELK111-1REC5-62-100.-A-01-V
Each
$663.54(exc. GST)
Eaton 30A Rail Mount Fuse Holder for 10 x 38mm Fuse, 3P, 600V ac
  • RS Stock No. 182-1796
  • Mfr. Part No. CHCC3DU
Each
$309.46(exc. GST)
Siemens, SENTRON MCCB 4P 400A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 257-301
  • Mfr. Part No. 3VA5340-7GC41-0AA0
Each
$13,011.41(exc. GST)
Mersen 50A NH Fuse, NH000, 690V ac
  • RS Stock No. 448-3291
  • Mfr. Part No. G320051
Each
$68.68(exc. GST)
Hager Hager HMX Circuit Breaker, 3P, 40A Curve C, 415V AC, 50 kA Breaking Capacity
  • RS Stock No. 599-872
  • Mfr. Part No. HMX340
Each
$1,218.21(exc. GST)
ABB Emax2 Electronic Circuit Breaker 630A Ekip G Touch LSIG, 4 channels
  • RS Stock No. 259-3413
  • Mfr. Part No. 1SDA071347R1
Each
$18,787.19(exc. GST)
Better World
Schneider Electric, ComPacT NSX MCCB 3P 32A, Fixed Mount
  • RS Stock No. 254-6297
  • Mfr. Part No. C10N3TM032
Each
$1,112.22(exc. GST)
Schneider Electric Acti9 SE10 MCB Mini Circuit Breaker, 1P, 16A Curve C, 415V AC, 10000 A Breaking Capacity
  • RS Stock No. 339-307
  • Mfr. Part No. SE10C116
Each
$57.48(exc. GST)
Better World
Schneider Electric Earthing Strap Brass
  • RS Stock No. 211-8775
  • Mfr. Part No. NSYAEECS
Each
$247.94(exc. GST)
Eaton 100A Ceramic Cartridge Fuse, 30 x 57mm
  • RS Stock No. 182-1627
  • Mfr. Part No. 100LR85
Each
$28.01(exc. GST)
Eaton 16A British Standard Fuse, F1, 550V ac
  • RS Stock No. 413-507
  • Mfr. Part No. NSD16
Each (In a Pack of 5)
$39.112(exc. GST)
Eaton 100A Rail Mount Fuse Holder for A4 Fuse, 1P, 690V ac
  • RS Stock No. 182-1783
  • Mfr. Part No. RS100PWH
Each
$345.98(exc. GST)
Eaton 10A Panel Mount Fuse Holder for 5 x 20mm Fuse, 250V ac
  • RS Stock No. 233-0589
  • Mfr. Part No. BK2-HTC-623M
Each (In a Pack of 10)
$5.665(exc. GST)
Better World
Siemens, Sentron MCCB Molded Case Circuit Breaker 4P 100A, Breaking Capacity 3 kA
  • RS Stock No. 245-246
  • Mfr. Part No. 3VA6210-7KM41-2AA0
Each
$19,063.66(exc. GST)
ETA Thermal Circuit Breaker - 3130 2 Pole 240V Voltage Rating Snap In, 15A Current Rating
  • RS Stock No. 212-2001
  • Mfr. Part No. 3130-F120-P7T1-W02Q-15A
Each
$139.54(exc. GST)
Schneider Electric Linergy Busbar, 750V ac
  • RS Stock No. 119-216
  • Mfr. Part No. LVS04113
Each
$1,668.87(exc. GST)
Eaton 180A Bolted Tag Fuse, 18 x 56mm, 240 V ac, 150V dc, 41.8mm
  • RS Stock No. 182-1575
  • Mfr. Part No. 180LET
Each
$43.31(exc. GST)
Schneider Electric, PowerPact Circuit breaker 4P 70A, Breaking Capacity 18 kA, DIN Rail Mount
  • RS Stock No. 357-130
  • Mfr. Part No. BDL46070LU
Each
$2,391.09(exc. GST)
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