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

1727 of 999+
Temporarily out of stock
Schneider Electric A9Z RCCB, 40A, 4 Pole, 100mA, Type A-SI, 380-415V ac
  • RS Stock No. 211-967
  • Mfr. Part No. A9Z32440
Each
$525.06(exc. GST)
Temporarily out of stock
Siemens SENTRON Locking Kit
  • RS Stock No. 277-0853
  • Mfr. Part No. 3WA9111-0BA36
Each
$967.57(exc. GST)
Temporarily out of stock
Schneider Electric Panelset Busbar
  • RS Stock No. 444-375
  • Mfr. Part No. NSYTBCN388
Each
$4,244.88(exc. GST)
In Stock
Schneider Electric ComPacT New Generation Electronic Circuit Breaker 16A 250V ComPacT NSX, Fixed
  • RS Stock No. 130-547
  • Mfr. Part No. C10N1TM016
Each
$1,154.98(exc. GST)
Temporarily out of stock
Eaton Eaton Moeller Enclosure for use with PKZM0
  • RS Stock No. 272-2326
  • Mfr. Part No. 262683 CI-K2-PKZ0-NA-GRV
Each
$70.75(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 800A, Breaking Capacity 30 kA, Fixed Mount
  • RS Stock No. 432-852
  • Mfr. Part No. C080H42EFM
Each
$23,223.76(exc. GST)
In Stock
RS PRO 2A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 199-237
1 Pack of 10
$512.30(exc. GST)
In Stock
Schneider Electric 440V ac Circuit Breaker Circuit Trip for use with Circuits
  • RS Stock No. 130-543
  • Mfr. Part No. C16F44B160
Each
$9,783.44(exc. GST)
Unavailable
Littelfuse 0.15A Resettable Fuse, 250V dc
  • RS Stock No. 869-7425P
  • Mfr. Part No. TRF600-150
Each (Supplied in a Bag)
$1.162(exc. GST)
In Stock
RS PRO 20A Time Lag Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 666-154
1 Pack of 100
$65.93(exc. GST)
In Stock
Littelfuse SMD Non Resettable Fuse 62mA, 125V
  • RS Stock No. 738-2908P
  • Mfr. Part No. 0154.062DR
Each (Supplied on a Reel)
$7.363(exc. GST)
In Stock
Schneider Electric Acti9 iC60 RCCB, 32A, 2 Pole, 30mA, Type C, 220 → 240V ac
  • RS Stock No. 110-285
  • Mfr. Part No. A9D07232
Each
$2,059.87(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 1.6kA 1SDA07, 4 channels
  • RS Stock No. 259-3639
  • Mfr. Part No. 1SDA071613R1
Each
$16,317.58(exc. GST)
Temporarily out of stock
Lovato 3 Phase Surge Protector, 50kA
  • RS Stock No. 216-8305
  • Mfr. Part No. SG23PA300R
Each
$683.73(exc. GST)
Temporarily out of stock
Schneider Electric, PowerPact MCCB 3P 30A, Breaking Capacity 18 kA, DIN Rail Mount
  • RS Stock No. 341-429
  • Mfr. Part No. NHGF36030TW
Each
$2,555.60(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 630A 1SDA07, 4 channels
  • RS Stock No. 259-3424
  • Mfr. Part No. 1SDA071358R1
Each
$20,088.07(exc. GST)
Temporarily out of stock
Schneider Electric Acti9 A9V5 MCB, 2P, 25A, Type A, 230-415V AC
  • RS Stock No. 212-104
  • Mfr. Part No. A9V54225
Each
$345.59(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 1.25kA Ekip Dip LSI, 4 channels
  • RS Stock No. 259-4566
  • Mfr. Part No. 1SDA072813R1
Each
$11,631.97(exc. GST)
Temporarily out of stock
Schneider Electric, MasterPact MTZ1 Circuit Breaker Accessory
  • RS Stock No. 119-199
  • Mfr. Part No. LV833815
Each
$1,243.47(exc. GST)
In Stock
Eaton 24V ac Undervoltage Release Circuit Trip for use with N(S)1(-4), NZM1(-4)
  • RS Stock No. 454-8168
  • Mfr. Part No. 259434 NZM1-XU24AC
Each
$293.10(exc. GST)
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