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

34963 Products showing for Fuses & Circuit Breakers

100 of 999+
F Lutze Ltd Copper Bus Bar Interconnection Strip, 1 Piece pieces
  • RS Stock No. 891-8962
  • Mfr. Part No. 716426
Each (In a Pack of 5)
$50.136(exc. GST)
Better World
Schneider Electric, ComPacT NSX MCCB 3P 100A, Fixed Mount
  • RS Stock No. 254-6308
  • Mfr. Part No. C11B3TM100L
Each
$890.12(exc. GST)
Schneider Electric, ComPacT MCCB 4P 250A, Breaking Capacity 40 kA, Fixed Mount
  • RS Stock No. 260-7867
  • Mfr. Part No. C25B4
Each
$2,404.05(exc. GST)
Eaton 100A Ceramic Cartridge Fuse, 30 x 57mm
  • RS Stock No. 182-1627
  • Mfr. Part No. 100LR85
Each
$28.01(exc. GST)
Better World
ABB System Pro M Compact S200 MCB, 1P, 2A Curve K, 253V AC, 72V DC, 6 kA Breaking Capacity
  • RS Stock No. 514-0096
  • Mfr. Part No. 2CDS251001R0277 S201-K2
Each
$73.15(exc. GST)
nVent ERIFLEX ERIFLEX Busbar, 25mm Pitch
  • RS Stock No. 277-6097
  • Mfr. Part No. 550290
Each (In a Pack of 4)
$423.535(exc. GST)
Mersen 16A Slow-Blow Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 247-2981
  • Mfr. Part No. Z302794
1 Box of 10
$210.29(exc. GST)
RS PRO 6.3A PCB Mount Fuse Holder, 250V ac
  • RS Stock No. 611-9037
Each (In a Pack of 10)
$2.527(exc. GST)
Mersen 6A F GMG Cartridge Fuse, 10 x 38mm
  • RS Stock No. 914-4405
  • Mfr. Part No. ATMR6
Each
$64.45(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)
Better World
Siemens, Sentron MCCB Molded Case Circuit Breaker 3P 40A, Breaking Capacity 2.5 kA
  • RS Stock No. 245-778
  • Mfr. Part No. 3VA6140-8HL31-0AA0
Each
$2,511.55(exc. GST)
TE Connectivity Thermal Circuit Breaker - W58 Single Pole 50 V dc, 250V ac Voltage Rating, 20A Current Rating
  • RS Stock No. 782-7984
  • Mfr. Part No. W58-XB1A4A-20
Each
$20.48(exc. GST)
RS PRO 3.5A T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 911-3417
Each (In a Pack of 10)
$1.206(exc. GST)
RS PRO 6A Bolted Tag Fuse, A2, 690V ac, 73mm
  • RS Stock No. 221-3713
1 Bag of 5
$74.59(exc. GST)
RS PRO RC Suppressor Circuit for use with Contactors
  • RS Stock No. 277-8528
Each
$104.19(exc. GST)
Siemens SENTRON 3 Phase Busbar, 400V
  • RS Stock No. 328-330
  • Mfr. Part No. 5ST3785-0
Each
$89.89(exc. GST)
Schurter 25A T Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 703-2672
  • Mfr. Part No. 8020.0606.G
Each (In a Pack of 10)
$2.519(exc. GST)
Eaton CI-K Enclosure for use with PKZM
  • RS Stock No. 272-2317
  • Mfr. Part No. 260363 CI-K2H-PKZ0-G
Each
$53.06(exc. GST)
Eaton 400A Centred Tag Fuse, NH03, 500V ac
  • RS Stock No. 703-8756P
  • Mfr. Part No. 400NHG03B
Each (Supplied in a Box)
$358.46(exc. GST)
Eaton 10A British Standard Fuse, E1, 240V ac
  • RS Stock No. 418-726
  • Mfr. Part No. SSD10
Each (In a Pack of 5)
$43.796(exc. GST)
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