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

99 of 999+
In Stock
Schneider Electric, ComPacT MCCB 3P 100A, Fixed Mount
  • RS Stock No. 260-9490
  • Mfr. Part No. C10N34V100
Each
$5,594.69(exc. GST)
In Stock
WISKA Earthing Nut
  • RS Stock No. 700-0827
  • Mfr. Part No. EN25
Each (In a Pack of 4)
$19.425(exc. GST)
Temporarily out of stock
Eaton xComfort Distribution Board Enclosure, 12 Way
  • RS Stock No. 257-993
  • Mfr. Part No. 280354 BC-U-1/12-ECO
Each
$101.48(exc. GST)
Temporarily out of stock
Weidmüller 1 Phase Surge Protector, 3A, 250V ac, Surface Mount Mount
  • RS Stock No. 287-5339
  • Mfr. Part No. 8614780000
Each
$203.91(exc. GST)
In Stock
Eaton 10A T Melamine Cartridge Fuse, 10 x 38mm
  • RS Stock No. 848-3891
  • Mfr. Part No. FNM-10
Each
$65.68(exc. GST)
Temporarily out of stock
160A Tag Fuse, 100 x 195mm, 690V
  • RS Stock No. 262-625
  • Mfr. Part No. EBH00013TTS5
Each
$200.61(exc. GST)
In Stock
Legrand RCD Socket, 30mA
  • RS Stock No. 255-2286
  • Mfr. Part No. 090476
Each
$747.58(exc. GST)
Temporarily out of stock
Schneider Electric ComPacT Cover Frame for use with ComPacT NS630b
  • RS Stock No. 654-622
  • Mfr. Part No. C160N4FM
Each
$12,688.94(exc. GST)
In Stock
Eaton 25A Stud Mount 6.3 x 32mm Fuse Block, 250V ac
  • RS Stock No. 233-0598
  • Mfr. Part No. BK2-S-4202-1D-R
1 Box of 2000
$3,215.39(exc. GST)
In Stock
RS PRO 25A British Standard Fuse, A1, 550V ac, 44.5mm
  • RS Stock No. 521-2539
Each (In a Pack of 5)
$13.422(exc. GST)
In Stock
Sensata Airpax Airpax Thermal Circuit Breaker - R11 Single Pole Panel Mount, 20A Current Rating
  • RS Stock No. 275-0455
  • Mfr. Part No. R11-2-20.0A-B06CV-V
Each
$28.49(exc. GST)
In Stock
Schneider Electric, ComPacT NSX MCCB 3P 150A, Fixed Mount
  • RS Stock No. 254-6339
  • Mfr. Part No. C163MA150
Each
$521.26(exc. GST)
Limited stock
Limitor Thermal Fuse +110°C 2.5 A, 250V ac
  • RS Stock No. 176-9182
  • Mfr. Part No. P82 110 05100
Each
$14.71(exc. GST)
Temporarily out of stock
Schneider Electric Linergy Connector Support for use with Linergy (Linergy BS) Busbar, PrismaSeT (PrismaSeT P) Enclosure
  • RS Stock No. 276-8820
  • Mfr. Part No. LVS04694
Each
$595.56(exc. GST)
In Stock
Eaton 250mA F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 537-1262
  • Mfr. Part No. S500-250-R
Each (In a Pack of 10)
$8.135(exc. GST)
In Stock
Mersen 50A NH Fuse, NH000, 690V ac
  • RS Stock No. 448-3291
  • Mfr. Part No. G320051
Each
$68.68(exc. GST)
In Stock
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)
In Stock
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)
In Stock
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)
In Stock
Eaton 100A Ceramic Cartridge Fuse, 30 x 57mm
  • RS Stock No. 182-1627
  • Mfr. Part No. 100LR85
Each
$28.01(exc. GST)
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