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

103 of 999+
Temporarily out of stock
Eaton Eaton xComfort IKA Distribution Block for use with Installation Distribution Board
  • RS Stock No. 246-618
  • Mfr. Part No. 187357 IKA-C-1/12-ST-LID
Each
$352.65(exc. GST)
In Stock
Littelfuse PC Board Non Resettable Fuse, Radial 500mA, 250V ac
  • RS Stock No. 226-0490
  • Mfr. Part No. 37005000000
Each (In a Pack of 10)
$1.132(exc. GST)
In Stock
Murrelektronik Limited Mico Pro Electronic Circuit Breaker 10A 24V 9000, 2 channels , DIN Rail
  • RS Stock No. 284-8054
  • Mfr. Part No. 9000-41092-0101000
Each
$225.42(exc. GST)
Temporarily out of stock
Eaton Eaton Moeller xPole 3 Phase Busbar, 415V
  • RS Stock No. 259-331
  • Mfr. Part No. 291489 EVG-16/3X1PHAS/9MODUL/HI
Each
$44.96(exc. GST)
In Stock
Eaton 5A T Melamine Cartridge Fuse, 10 x 38mm
  • RS Stock No. 848-4162
  • Mfr. Part No. LP-CC-5
Each
$140.58(exc. GST)
In Stock
Legrand 10A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 266-3104
  • Mfr. Part No. 013410
1 Box of 10
$121.66(exc. GST)
In Stock
Eaton 40A Ceramic Cartridge Fuse, 23 x 57mm
  • RS Stock No. 182-1692
  • Mfr. Part No. 40KR85
Each
$20.09(exc. GST)
Temporarily out of stock
Legrand DX3 RCD, 40A, 3+N Pole, 30mA, Type AC
  • RS Stock No. 732-0017
  • Mfr. Part No. 4 111 90
Each
$1,194.75(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 5A, Breaking Capacity 10 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-722
  • Mfr. Part No. 3VA5105-1MH31-0AA0
Each
$1,020.03(exc. GST)
In Stock
Littelfuse SMD Non Resettable Fuse 6.3A, 125V
  • RS Stock No. 738-2927
  • Mfr. Part No. 045106.3MRL
Each (In a Pack of 10)
$2.16(exc. GST)
In Stock
Eaton 6A T Fibreglass Cartridge Fuse, 10 x 38mm
  • RS Stock No. 851-1246
  • Mfr. Part No. FNQ-6
Each
$105.07(exc. GST)
Temporarily out of stock
Schneider Electric ComPacT Key Lock for use with ComPact NS630b To NS1600, Rotary Handle Locking
  • RS Stock No. 245-074
  • Mfr. Part No. 33868
Each
$77.85(exc. GST)
Temporarily out of stock
HPM C32 Electronic Circuit Breaker 32A, 1 channels , Plug In Type C
  • RS Stock No. 273-1129
  • Mfr. Part No. CDCB132
Each
$32.32(exc. GST)
Temporarily out of stock
Eaton 315A Bolted Tag Fuse, 415V ac, 82mm
  • RS Stock No. 181-8599
  • Mfr. Part No. 315MJ30-7
1 Box of 5
$1,236.65(exc. GST)
In Stock
Better World
Siemens SENTRON 5SY6 MCB, 2P, 20A Curve C, 400V AC, 6 kA Breaking Capacity
  • RS Stock No. 209-6016
  • Mfr. Part No. 5SY6220-7
Each
$158.52(exc. GST)
Temporarily out of stock
Phoenix Contact 1 Phase Surge Arrester, DIN Rail Mount
  • RS Stock No. 131-796
  • Mfr. Part No. 2920230
Each
$568.12(exc. GST)
Temporarily out of stock
Schneider Electric Cover for use with INS100, INS160
  • RS Stock No. 280-8418
  • Mfr. Part No. 28958
Each
$26.80(exc. GST)
Temporarily out of stock
Better World
Siemens SIRIUS Electronic Circuit Breaker 2.5A 3RV2, 3 channels , DIN Rail Mount
  • RS Stock No. 160-210
  • Mfr. Part No. 3RV2421-1CA10
Each
$480.66(exc. GST)
Last RS stock
Schurter Non-Resettable Wire Ended Fuse 4A, 250V ac
  • RS Stock No. 703-2635
  • Mfr. Part No. 8020.0520.PT
Each (In a Pack of 10)
$0.242(exc. GST)
Temporarily out of stock
Eaton NZM Electronic Circuit Breaker 110A NZM, 4 channels , Fixed
  • RS Stock No. 121-913
  • Mfr. Part No. 153385 NZMB2-4-AF110-BT-NA
Each
$2,592.17(exc. GST)
1
103
1749
Results per page

Related links