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

128 of 999+
Hager 12A Cartridge Fuse, 10 x 38mm
  • RS Stock No. 250-8604
  • Mfr. Part No. LF312G
Each (In a Pack of 10)
$6.821(exc. GST)
Better World
Schneider Electric 690V ac AC/AC Adapter Circuit Trip
  • RS Stock No. 744-8642
  • Mfr. Part No. VBF02
Each
$90.52(exc. GST)
Schneider Electric, Compact MCCB 4P 630A, Breaking Capacity 30 kA
  • RS Stock No. 340-876
  • Mfr. Part No. C063N4WM
Each
$6,324.29(exc. GST)
ABB DDA200 RCCB, 40A, 2 Pole, 30mA, 230/400V
  • RS Stock No. 289-1617
  • Mfr. Part No. 2CSB202001R3400
Each
$294.88(exc. GST)
Hager BD RCCB, 40A, 3P Pole, 30mA, Type AC
  • RS Stock No. 602-051
  • Mfr. Part No. BD341
Each
$707.05(exc. GST)
Littelfuse PC Board Non Resettable Fuse, Axial 1A, 125V ac/dc
  • RS Stock No. 541-3265P
  • Mfr. Part No. 251001.NRT1L
Each (Supplied in a Bag)
$2.025(exc. GST)
ABB 400A Tag Fuse, 150 x 51 x 84mm, 500V
  • RS Stock No. 250-4454
  • Mfr. Part No. 1SCA022698R0100
Each
$120.75(exc. GST)
RS PRO 30A Inline Fuse Holder for ATO/ATC 19x18.6mm Fuse, 32V dc
  • RS Stock No. 284-6488
Each (In a Pack of 5)
$8.714(exc. GST)
Schneider Electric Compact Long Rear Connection for use with NS630b
  • RS Stock No. 341-040
  • Mfr. Part No. 33732
Each
$709.87(exc. GST)
Eaton 16A Centred Tag Fuse, NH000, 690V ac
  • RS Stock No. 703-8774
  • Mfr. Part No. 16NHG000B-690
Each
$104.13(exc. GST)
Schneider Electric CompacT Cover Frame for use with ComPacT NS630b
  • RS Stock No. 654-854
  • Mfr. Part No. C125H4WM
Each
$10,983.47(exc. GST)
Schneider Electric PowerPact Circuit Breaker - PowerPacT 4 Pole 347V ac Voltage Rating Clip-On, 35A Current Rating
  • RS Stock No. 205-175
  • Mfr. Part No. BDF46035
Each
$2,395.44(exc. GST)
Siemens 100A Centred Tag Fuse, NH000, 500V ac
  • RS Stock No. 203-2011
  • Mfr. Part No. 3NA7830
Each (In a Pack of 3)
$14.837(exc. GST)
Schneider Electric Cross Elbow Busbar Trunking, 290 → 800mm, 630A, Canalis Series
  • RS Stock No. 335-073
  • Mfr. Part No. KSA630DZCG41A
Each
$5,562.84(exc. GST)
Schneider Electric, ComPact MCCB Molded Case Circuit Breaker 3P 100A, Fixed Mount
  • RS Stock No. 221-1046
  • Mfr. Part No. LV433510
Each
$5,373.51(exc. GST)
Phoenix Contact 16A Cartridge Fuse, 10 x 38mm
  • RS Stock No. 241-6166
  • Mfr. Part No. 3061350
Each (In a Pack of 10)
$20.917(exc. GST)
Littelfuse PC Board Non Resettable Fuse, Radial 50mA, 250V ac
  • RS Stock No. 895-1644
  • Mfr. Part No. 37200500431
Each (In a Pack of 10)
$2.127(exc. GST)
Eaton IZMX/INX Electronic Circuit Breaker 1.6kA IZMX40, 4 channels , Withdrawable
  • RS Stock No. 132-724
  • Mfr. Part No. 183782 IZMX40B4-P16W-1
Each
$38,389.95(exc. GST)
RS PRO 500mA F Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 563-328
Each (In a Pack of 10)
$0.389(exc. GST)
Better World
Schneider Electric Compact Ins, Compact Insj, Compact Inv, Compact Nsx, Easypact Cvs Long Terminal Shield for use with
  • RS Stock No. 221-1266
  • Mfr. Part No. LV432596
Each
$428.45(exc. GST)
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