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

102 of 999+
Limited stock
ETA REX12 Electronic Circuit breaker 1A 24V REX12-T, DIN Rail Mount
  • RS Stock No. 175-0370
  • Mfr. Part No. REX12-TA2-107-DC24V-1A/1A
Each
$161.30(exc. GST)
In Stock
Eaton Circuit Breaker - NZM..-ME..NA 3 Pole 690V ac Voltage Rating, 90A Current Rating
  • RS Stock No. 250-9706
  • Mfr. Part No. 118967 NZMH2-ME90-NA
Each
$3,946.43(exc. GST)
Temporarily out of stock
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)
Temporarily out of stock
Eaton 355A Cartridge Fuse, 62 x 256mm
  • RS Stock No. 260-702
  • Mfr. Part No. TMT355
Each
$452.07(exc. GST)
In Stock
Schneider Electric Surge Arrester, 50kA, 350V ac, Clip-On Mount
  • RS Stock No. 288-7107
  • Mfr. Part No. A9L16382
Each
$1,798.92(exc. GST)
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 160A 3VA2, 4 channels
  • RS Stock No. 156-646
  • Mfr. Part No. 3VA2216-5JP42-0AA0
Each
$6,123.32(exc. GST)
In Stock
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)
In Stock
Eaton 5A T Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 537-1492
  • Mfr. Part No. S505-5-R
Each (In a Pack of 10)
$0.535(exc. GST)
In Stock
Littelfuse Fuse Holder DIN Rail Adapter
  • RS Stock No. 360-5670
  • Mfr. Part No. FBDIN1
Each (In a Pack of 5)
$6.626(exc. GST)
In Stock
Hager MJT MCB, 2P, 20A Curve C, 240 → 400V AC, 6 kA Breaking Capacity
  • RS Stock No. 144-4951
  • Mfr. Part No. MJT720
Each
$72.09(exc. GST)
In Stock
Better World
Schneider Electric Acti 9 iC60L MCB, 1P, 63A Curve C, 15 kA Breaking Capacity
  • RS Stock No. 219-9270
  • Mfr. Part No. A9F94163
Each
$266.50(exc. GST)
In Stock
Eaton 315A Tag Fuse, NH3, 1kV
  • RS Stock No. 282-6186
  • Mfr. Part No. BSF-315G-NH310
Each
$792.29(exc. GST)
In Stock
RS PRO Industrial Surge Protector, 50kA, 5.1kV, DIN Rail Mount
  • RS Stock No. 101-758
Each
$300.93(exc. GST)
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)
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